From 16d3ea26f82271fef9b1c4523b5e1ea31fa39eec Mon Sep 17 00:00:00 2001 From: "Martin K. Petersen" Date: Fri, 10 Sep 2010 01:20:27 -0400 Subject: [SCSI] Fix VPD inquiry page wrapper Fix two bugs in the VPD page wrapper: - Don't return failure if the user asked for page 0 - The end of buffer check failed to account for the page header size and consequently didn't work Signed-off-by: Martin K. Petersen Cc: Stable Tree Signed-off-by: James Bottomley --- drivers/scsi/scsi.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/scsi/scsi.c b/drivers/scsi/scsi.c index ad0ed212db4..348fba0a897 100644 --- a/drivers/scsi/scsi.c +++ b/drivers/scsi/scsi.c @@ -1046,13 +1046,13 @@ int scsi_get_vpd_page(struct scsi_device *sdev, u8 page, unsigned char *buf, /* If the user actually wanted this page, we can skip the rest */ if (page == 0) - return -EINVAL; + return 0; for (i = 0; i < min((int)buf[3], buf_len - 4); i++) if (buf[i + 4] == page) goto found; - if (i < buf[3] && i > buf_len) + if (i < buf[3] && i >= buf_len - 4) /* ran off the end of the buffer, give us benefit of doubt */ goto found; /* The device claims it doesn't support the requested page */ -- cgit v1.2.3 From 38e7afe96c7c0ad900824911c61fdb04078033dc Mon Sep 17 00:00:00 2001 From: Henrik Rydberg Date: Sun, 19 Sep 2010 16:25:36 -0700 Subject: Input: uinput - setup MT usage during device creation The input devices created by uinput do not currently handle multitouch properly. All events will appear as if they came from slot zero, and the input event buffers are not adjusted. This patch creates the MT slots during setup, and sets the number of events per packet based on the MT usage. Signed-off-by: Henrik Rydberg Signed-off-by: Dmitry Torokhov --- drivers/input/misc/uinput.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/input/misc/uinput.c b/drivers/input/misc/uinput.c index 0d4266a533a..360698553eb 100644 --- a/drivers/input/misc/uinput.c +++ b/drivers/input/misc/uinput.c @@ -404,6 +404,13 @@ static int uinput_setup_device(struct uinput_device *udev, const char __user *bu retval = uinput_validate_absbits(dev); if (retval < 0) goto exit; + if (test_bit(ABS_MT_SLOT, dev->absbit)) { + int nslot = input_abs_get_max(dev, ABS_MT_SLOT) + 1; + input_mt_create_slots(dev, nslot); + input_set_events_per_packet(dev, 6 * nslot); + } else if (test_bit(ABS_MT_POSITION_X, dev->absbit)) { + input_set_events_per_packet(dev, 60); + } } udev->state = UIST_SETUP_COMPLETE; -- cgit v1.2.3 From d2520a426dc3033c00077e923a553fc6c98c7564 Mon Sep 17 00:00:00 2001 From: Kenneth Waters Date: Tue, 21 Sep 2010 00:58:23 -0700 Subject: Input: joydev - fix JSIOCSAXMAP ioctl Fixed JSIOCSAXMAP ioctl to update absmap, the map from hardware axis to event axis in addition to abspam. This fixes a regression introduced by 999b874f. Signed-off-by: Kenneth Waters Cc: stable@kernel.org Signed-off-by: Dmitry Torokhov --- drivers/input/joydev.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/input/joydev.c b/drivers/input/joydev.c index d85bd8a7967..22239e98849 100644 --- a/drivers/input/joydev.c +++ b/drivers/input/joydev.c @@ -483,6 +483,9 @@ static int joydev_handle_JSIOCSAXMAP(struct joydev *joydev, memcpy(joydev->abspam, abspam, len); + for (i = 0; i < joydev->nabs; i++) + joydev->absmap[joydev->abspam[i]] = i; + out: kfree(abspam); return retval; -- cgit v1.2.3 From 4a109cc0511209276e58f1dbe53259e7a8f1508b Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Fri, 24 Sep 2010 10:50:46 +0100 Subject: ASoC: Add Jassi Brar as Samsung maintainer Since Jassi is doing so much good work and can offer such good review for the Samsung CPU support add an entry for the Samsung ASoC drivers to MAINTAINERS listing him. Signed-off-by: Mark Brown Acked-by: Jassi Brar Acked-by: Liam Girdwood --- MAINTAINERS | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/MAINTAINERS b/MAINTAINERS index b5b8baa1d70..f51409b1527 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -4965,6 +4965,12 @@ F: drivers/media/common/saa7146* F: drivers/media/video/*7146* F: include/media/*7146* +SAMSUNG AUDIO (ASoC) DRIVERS +M: Jassi Brar +L: alsa-devel@alsa-project.org (moderated for non-subscribers) +S: Supported +F: sound/soc/s3c24xx + TLG2300 VIDEO4LINUX-2 DRIVER M: Huang Shijie M: Kang Yong -- cgit v1.2.3 From fb0c484f72df9e336605b5659f39eb1ab5e8d946 Mon Sep 17 00:00:00 2001 From: Randy Dunlap Date: Thu, 19 Aug 2010 14:42:14 -0300 Subject: V4L/DVB: tm6000: depends on IR_CORE tm6000 uses IR interfaces, so it should depend on IR_CORE. ERROR: "get_rc_map" [drivers/staging/tm6000/tm6000.ko] undefined! ERROR: "ir_input_unregister" [drivers/staging/tm6000/tm6000.ko] undefined! ERROR: "__ir_input_register" [drivers/staging/tm6000/tm6000.ko] undefined! Signed-off-by: Randy Dunlap Signed-off-by: Mauro Carvalho Chehab --- drivers/staging/tm6000/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/staging/tm6000/Kconfig b/drivers/staging/tm6000/Kconfig index c725356cc34..de7ebb99d8f 100644 --- a/drivers/staging/tm6000/Kconfig +++ b/drivers/staging/tm6000/Kconfig @@ -1,6 +1,6 @@ config VIDEO_TM6000 tristate "TV Master TM5600/6000/6010 driver" - depends on VIDEO_DEV && I2C && INPUT && USB && EXPERIMENTAL + depends on VIDEO_DEV && I2C && INPUT && IR_CORE && USB && EXPERIMENTAL select VIDEO_TUNER select MEDIA_TUNER_XC2028 select MEDIA_TUNER_XC5000 -- cgit v1.2.3 From 0f63a14d357b3a80abb5203a574cbb3f8988c2f7 Mon Sep 17 00:00:00 2001 From: lawrence rust Date: Tue, 24 Aug 2010 06:50:48 -0300 Subject: V4L/DVB: cx88: Kconfig: Remove EXPERIMENTAL dependency from VIDEO_CX88_ALSA The cx88-alsa module has been around since January 2006 and has seen no significant changes since September 2007. It is stable in operation and so I believe that the 'experimental' tag is no longer warranted. Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/cx88/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/media/video/cx88/Kconfig b/drivers/media/video/cx88/Kconfig index 99dbae11759..0fa85cbefbb 100644 --- a/drivers/media/video/cx88/Kconfig +++ b/drivers/media/video/cx88/Kconfig @@ -17,7 +17,7 @@ config VIDEO_CX88 config VIDEO_CX88_ALSA tristate "Conexant 2388x DMA audio support" - depends on VIDEO_CX88 && SND && EXPERIMENTAL + depends on VIDEO_CX88 && SND select SND_PCM ---help--- This is a video4linux driver for direct (DMA) audio on -- cgit v1.2.3 From 590a58d18027b18db78f538aca592c2cdb249079 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Thu, 12 Aug 2010 04:41:58 -0300 Subject: V4L/DVB: unlock on error path If we return directly here then we miss out on some mutex_unlock()s Signed-off-by: Dan Carpenter Acked-by: Sylwester Nawrocki Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/s5p-fimc/fimc-core.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/media/video/s5p-fimc/fimc-core.c b/drivers/media/video/s5p-fimc/fimc-core.c index b151c7be8a5..1beb2263d18 100644 --- a/drivers/media/video/s5p-fimc/fimc-core.c +++ b/drivers/media/video/s5p-fimc/fimc-core.c @@ -822,7 +822,8 @@ static int fimc_m2m_s_fmt(struct file *file, void *priv, struct v4l2_format *f) } else { v4l2_err(&ctx->fimc_dev->m2m.v4l2_dev, "Wrong buffer/video queue type (%d)\n", f->type); - return -EINVAL; + ret = -EINVAL; + goto s_fmt_out; } pix = &f->fmt.pix; -- cgit v1.2.3 From 028816bc85db5ac6a562c2aff2113c7480d67919 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Thu, 12 Aug 2010 04:47:07 -0300 Subject: V4L/DVB: IR: ir-raw-event: null pointer dereference The original code dereferenced ir->raw after freeing it and setting it to NULL. Signed-off-by: Dan Carpenter Acked-by: Jarod Wilson Signed-off-by: Mauro Carvalho Chehab --- drivers/media/IR/ir-raw-event.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/media/IR/ir-raw-event.c b/drivers/media/IR/ir-raw-event.c index 43094e7eccf..8e0e1b1f8c8 100644 --- a/drivers/media/IR/ir-raw-event.c +++ b/drivers/media/IR/ir-raw-event.c @@ -279,9 +279,11 @@ int ir_raw_event_register(struct input_dev *input_dev) "rc%u", (unsigned int)ir->devno); if (IS_ERR(ir->raw->thread)) { + int ret = PTR_ERR(ir->raw->thread); + kfree(ir->raw); ir->raw = NULL; - return PTR_ERR(ir->raw->thread); + return ret; } mutex_lock(&ir_raw_handler_lock); -- cgit v1.2.3 From a8e07124500184f81541ddf3e9669000af9ac4bc Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Thu, 19 Aug 2010 06:47:50 -0300 Subject: V4L/DVB: opera1: remove unneeded NULL check "fw" is always a non-NULL pointer at this point, and anyway release_firmware() accepts NULL pointers. Signed-off-by: Dan Carpenter Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb/dvb-usb/opera1.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/drivers/media/dvb/dvb-usb/opera1.c b/drivers/media/dvb/dvb-usb/opera1.c index 6b22ec64ab0..f896337b453 100644 --- a/drivers/media/dvb/dvb-usb/opera1.c +++ b/drivers/media/dvb/dvb-usb/opera1.c @@ -483,9 +483,7 @@ static int opera1_xilinx_load_firmware(struct usb_device *dev, } } kfree(p); - if (fw) { - release_firmware(fw); - } + release_firmware(fw); return ret; } -- cgit v1.2.3 From d5337966ce4639c775ff5edf92d78f5fad34ef0d Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Thu, 19 Aug 2010 06:50:04 -0300 Subject: V4L/DVB: pvrusb2: remove unneeded NULL checks We dereference "maskptr" unconditionally at the start of the function and also inside the call to parse_tlist() towards the end of the function. This function is called from store_val_any() and it always passes a non-NULL pointer. Signed-off-by: Dan Carpenter Acked-by: Mike Isely Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/pvrusb2/pvrusb2-ctrl.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/media/video/pvrusb2/pvrusb2-ctrl.c b/drivers/media/video/pvrusb2/pvrusb2-ctrl.c index 1b992b84719..55ea914c7fc 100644 --- a/drivers/media/video/pvrusb2/pvrusb2-ctrl.c +++ b/drivers/media/video/pvrusb2/pvrusb2-ctrl.c @@ -513,7 +513,7 @@ int pvr2_ctrl_sym_to_value(struct pvr2_ctrl *cptr, if (ret >= 0) { ret = pvr2_ctrl_range_check(cptr,*valptr); } - if (maskptr) *maskptr = ~0; + *maskptr = ~0; } else if (cptr->info->type == pvr2_ctl_bool) { ret = parse_token(ptr,len,valptr,boolNames, ARRAY_SIZE(boolNames)); @@ -522,7 +522,7 @@ int pvr2_ctrl_sym_to_value(struct pvr2_ctrl *cptr, } else if (ret == 0) { *valptr = (*valptr & 1) ? !0 : 0; } - if (maskptr) *maskptr = 1; + *maskptr = 1; } else if (cptr->info->type == pvr2_ctl_enum) { ret = parse_token( ptr,len,valptr, @@ -531,7 +531,7 @@ int pvr2_ctrl_sym_to_value(struct pvr2_ctrl *cptr, if (ret >= 0) { ret = pvr2_ctrl_range_check(cptr,*valptr); } - if (maskptr) *maskptr = ~0; + *maskptr = ~0; } else if (cptr->info->type == pvr2_ctl_bitmask) { ret = parse_tlist( ptr,len,maskptr,valptr, -- cgit v1.2.3 From 23e64d55859ea619c17832645e0e56faac84d750 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Thu, 19 Aug 2010 07:00:22 -0300 Subject: V4L/DVB: saa7164: move dereference under NULL check The original code dereferenced "port" before checking it for NULL. I moved the test down below the check. Also I changed the comparisons a little so people wouldn't get confused and think "port" and "buf" were ints instead of pointers. (Probably that's what lead to this issue in the first place.) There is only one caller for this function and it passes non-NULL pointers, so this is essentially a cleanup rather than a bugfix. Signed-off-by: Dan Carpenter Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/saa7164/saa7164-buffer.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/media/video/saa7164/saa7164-buffer.c b/drivers/media/video/saa7164/saa7164-buffer.c index 5713f3a4b76..ddd25d32723 100644 --- a/drivers/media/video/saa7164/saa7164-buffer.c +++ b/drivers/media/video/saa7164/saa7164-buffer.c @@ -136,10 +136,11 @@ ret: int saa7164_buffer_dealloc(struct saa7164_tsport *port, struct saa7164_buffer *buf) { - struct saa7164_dev *dev = port->dev; + struct saa7164_dev *dev; - if ((buf == 0) || (port == 0)) + if (!buf || !port) return SAA_ERR_BAD_PARAMETER; + dev = port->dev; dprintk(DBGLVL_BUF, "%s() deallocating buffer @ 0x%p\n", __func__, buf); -- cgit v1.2.3 From 29d834912bbcf0d095e6cd0e95b0d9790fdf7957 Mon Sep 17 00:00:00 2001 From: Dmitri Belimov Date: Mon, 23 Aug 2010 10:30:14 -0300 Subject: V4L/DVB: Fix regression for BeholdTV Columbus Some time a go our customers wrote me about problem with our TV card BeholdTV Columbus. It's PCMCIA TV card for notebook. As I understand v4l has some regression with autodetect address of tuners. I can set incorrect I2C address and had report about detect tuner. No any TV of course. When I set correct tuner type and I2C address of the tuners all works well. Signed-off-by: Beholder Intl. Ltd. Dmitry Belimov Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/saa7134/saa7134-cards.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/drivers/media/video/saa7134/saa7134-cards.c b/drivers/media/video/saa7134/saa7134-cards.c index ec697fcd406..bb8d83d8dda 100644 --- a/drivers/media/video/saa7134/saa7134-cards.c +++ b/drivers/media/video/saa7134/saa7134-cards.c @@ -4323,13 +4323,13 @@ struct saa7134_board saa7134_boards[] = { }, [SAA7134_BOARD_BEHOLD_COLUMBUS_TVFM] = { /* Beholder Intl. Ltd. 2008 */ - /*Dmitry Belimov */ - .name = "Beholder BeholdTV Columbus TVFM", + /* Dmitry Belimov */ + .name = "Beholder BeholdTV Columbus TV/FM", .audio_clock = 0x00187de7, .tuner_type = TUNER_ALPS_TSBE5_PAL, - .radio_type = UNSET, - .tuner_addr = ADDR_UNSET, - .radio_addr = ADDR_UNSET, + .radio_type = TUNER_TEA5767, + .tuner_addr = 0xc2 >> 1, + .radio_addr = 0xc0 >> 1, .tda9887_conf = TDA9887_PRESENT, .gpiomask = 0x000A8004, .inputs = {{ -- cgit v1.2.3 From 882787ff8fdeb0be790547ee9b22b281095e95da Mon Sep 17 00:00:00 2001 From: Jason Wang Date: Fri, 3 Sep 2010 06:57:19 -0300 Subject: V4L/DVB: gspca - main: Fix a crash of some webcams on ARM arch MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit When plugging some webcams on ARM, the system crashes. This is because we alloc buffer for an urb through usb_buffer_alloc, the alloced buffer is already in DMA coherent region, so we should set the flag of this urb to URB_NO_TRANSFER_DMA_MAP, otherwise when we submit this urb, the hcd core will handle this address as an non-DMA address and call dma_map_single/sg to map it. On arm architecture, dma_map_single a DMA coherent address will be catched by a BUG_ON(). Signed-off-by: Jason Wang Signed-off-by: Jean-François Moine Cc: stable@kernel.org Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/gspca/gspca.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/media/video/gspca/gspca.c b/drivers/media/video/gspca/gspca.c index b9846106913..78abc1c1f9d 100644 --- a/drivers/media/video/gspca/gspca.c +++ b/drivers/media/video/gspca/gspca.c @@ -223,6 +223,7 @@ static int alloc_and_submit_int_urb(struct gspca_dev *gspca_dev, usb_rcvintpipe(dev, ep->bEndpointAddress), buffer, buffer_len, int_irq, (void *)gspca_dev, interval); + urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; gspca_dev->int_urb = urb; ret = usb_submit_urb(urb, GFP_KERNEL); if (ret < 0) { -- cgit v1.2.3 From c13df9cf6b1cad7fd088c9acceb98b6bffd9ca31 Mon Sep 17 00:00:00 2001 From: Jarod Wilson Date: Fri, 27 Aug 2010 18:21:14 -0300 Subject: V4L/DVB: mceusb: add two new ASUS device IDs Reported in lirc sf.net tracker and on lirc mailing list Signed-off-by: Jarod Wilson Signed-off-by: Mauro Carvalho Chehab --- drivers/media/IR/mceusb.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/media/IR/mceusb.c b/drivers/media/IR/mceusb.c index ac6bb2c01a4..bc620e10ef7 100644 --- a/drivers/media/IR/mceusb.c +++ b/drivers/media/IR/mceusb.c @@ -120,6 +120,10 @@ static struct usb_device_id mceusb_dev_table[] = { { USB_DEVICE(VENDOR_PHILIPS, 0x0613) }, /* Philips eHome Infrared Transceiver */ { USB_DEVICE(VENDOR_PHILIPS, 0x0815) }, + /* Philips/Spinel plus IR transceiver for ASUS */ + { USB_DEVICE(VENDOR_PHILIPS, 0x206c) }, + /* Philips/Spinel plus IR transceiver for ASUS */ + { USB_DEVICE(VENDOR_PHILIPS, 0x2088) }, /* Realtek MCE IR Receiver */ { USB_DEVICE(VENDOR_REALTEK, 0x0161) }, /* SMK/Toshiba G83C0004D410 */ -- cgit v1.2.3 From 3bfb317f97cfddbbec67bbe8e35ad38af3507397 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Fri, 3 Sep 2010 10:50:24 -0300 Subject: V4L/DVB: Don't identify PV SBTVD Hybrid as a DibCom device As reported by Carlos, Prolink Pixelview SBTVD Hybrid is based on Conexant cx231xx + Fujitsu 86A20S demodulator. However, both shares the same USB ID. So, we need to use USB bcdDevice, in order to properly discover what's the board. We know for sure that bcd 0x100 is used for a dib0700 device, while bcd 0x4001 is used for a cx23102 device. This patch reserves two ranges, the first one from 0x0000-0x3f00 for dib0700, and the second from 0x4000-0x4fff for cx231xx devices. This may need fixes in the future, as we get access to other devices. Thanks-to: Carlos Americo Domiciano Cc: stable@kernel.org Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb/dvb-usb/dib0700_devices.c | 2 +- drivers/media/video/cx231xx/Makefile | 1 + drivers/media/video/cx231xx/cx231xx-cards.c | 3 +++ 3 files changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/media/dvb/dvb-usb/dib0700_devices.c b/drivers/media/dvb/dvb-usb/dib0700_devices.c index f634d2e784b..ce66c5a96ba 100644 --- a/drivers/media/dvb/dvb-usb/dib0700_devices.c +++ b/drivers/media/dvb/dvb-usb/dib0700_devices.c @@ -1781,7 +1781,7 @@ struct usb_device_id dib0700_usb_id_table[] = { /* 60 */{ USB_DEVICE(USB_VID_TERRATEC, USB_PID_TERRATEC_CINERGY_T_XXS_2) }, { USB_DEVICE(USB_VID_DIBCOM, USB_PID_DIBCOM_STK807XPVR) }, { USB_DEVICE(USB_VID_DIBCOM, USB_PID_DIBCOM_STK807XP) }, - { USB_DEVICE(USB_VID_PIXELVIEW, USB_PID_PIXELVIEW_SBTVD) }, + { USB_DEVICE_VER(USB_VID_PIXELVIEW, USB_PID_PIXELVIEW_SBTVD, 0x000, 0x3f00) }, { USB_DEVICE(USB_VID_EVOLUTEPC, USB_PID_TVWAY_PLUS) }, /* 65 */{ USB_DEVICE(USB_VID_PINNACLE, USB_PID_PINNACLE_PCTV73ESE) }, { USB_DEVICE(USB_VID_PINNACLE, USB_PID_PINNACLE_PCTV282E) }, diff --git a/drivers/media/video/cx231xx/Makefile b/drivers/media/video/cx231xx/Makefile index 755dd0ce65f..6f2b5738448 100644 --- a/drivers/media/video/cx231xx/Makefile +++ b/drivers/media/video/cx231xx/Makefile @@ -11,4 +11,5 @@ EXTRA_CFLAGS += -Idrivers/media/video EXTRA_CFLAGS += -Idrivers/media/common/tuners EXTRA_CFLAGS += -Idrivers/media/dvb/dvb-core EXTRA_CFLAGS += -Idrivers/media/dvb/frontends +EXTRA_CFLAGS += -Idrivers/media/dvb/dvb-usb diff --git a/drivers/media/video/cx231xx/cx231xx-cards.c b/drivers/media/video/cx231xx/cx231xx-cards.c index 6bdc0ef1811..5b7c9a948a0 100644 --- a/drivers/media/video/cx231xx/cx231xx-cards.c +++ b/drivers/media/video/cx231xx/cx231xx-cards.c @@ -32,6 +32,7 @@ #include #include +#include "dvb-usb-ids.h" #include "xc5000.h" #include "cx231xx.h" @@ -175,6 +176,8 @@ struct usb_device_id cx231xx_id_table[] = { .driver_info = CX231XX_BOARD_CNXT_RDE_250}, {USB_DEVICE(0x0572, 0x58A1), .driver_info = CX231XX_BOARD_CNXT_RDU_250}, + {USB_DEVICE_VER(USB_VID_PIXELVIEW, USB_PID_PIXELVIEW_SBTVD, 0x4000,0x4fff), + .driver_info = CX231XX_BOARD_UNKNOWN}, {}, }; -- cgit v1.2.3 From 04cab131ce2a267b6777a98d68fbc0cae44d4ba8 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Wed, 8 Sep 2010 12:58:12 -0300 Subject: V4L/DVB: rc-core: increase repeat time As reported by Anton Blanchard , double IR events on 2.6.36-rc2 and a DViCO FusionHDTV DVB-T Dual Express are happening: [ 1351.032084] ir_keydown: i2c IR (FusionHDTV): key down event, key 0x0067, scancode 0x0051 [ 1351.281284] ir_keyup: keyup key 0x0067 ie one key down event and one key up event 250ms later. So, we need to increase the repeat timeout, to avoid this bug to hit. As we're doing it at core, this fix is not needed anymore at dib0700 driver. Thanks-to: Anton Blanchard Cc: stable@kernel.org Signed-off-by: Mauro Carvalho Chehab --- drivers/media/IR/ir-keytable.c | 7 +++++++ drivers/media/dvb/dvb-usb/dib0700_core.c | 3 --- 2 files changed, 7 insertions(+), 3 deletions(-) diff --git a/drivers/media/IR/ir-keytable.c b/drivers/media/IR/ir-keytable.c index 7e82a9df726..d00ef194f2e 100644 --- a/drivers/media/IR/ir-keytable.c +++ b/drivers/media/IR/ir-keytable.c @@ -510,6 +510,13 @@ int __ir_input_register(struct input_dev *input_dev, (ir_dev->props && ir_dev->props->driver_type == RC_DRIVER_IR_RAW) ? " in raw mode" : ""); + /* + * Default delay of 250ms is too short for some protocols, expecially + * since the timeout is currently set to 250ms. Increase it to 500ms, + * to avoid wrong repetition of the keycodes. + */ + input_dev->rep[REP_DELAY] = 500; + return 0; out_event: diff --git a/drivers/media/dvb/dvb-usb/dib0700_core.c b/drivers/media/dvb/dvb-usb/dib0700_core.c index fe818348b8a..48397f103d3 100644 --- a/drivers/media/dvb/dvb-usb/dib0700_core.c +++ b/drivers/media/dvb/dvb-usb/dib0700_core.c @@ -673,9 +673,6 @@ static int dib0700_probe(struct usb_interface *intf, else dev->props.rc.core.bulk_mode = false; - /* Need a higher delay, to avoid wrong repeat */ - dev->rc_input_dev->rep[REP_DELAY] = 500; - dib0700_rc_setup(dev); return 0; -- cgit v1.2.3 From 67332ba83242f814490884161fee8676a9fd8a09 Mon Sep 17 00:00:00 2001 From: Maxim Levitsky Date: Mon, 6 Sep 2010 18:26:08 -0300 Subject: V4L/DVB: IR: fix duty cycle capability Due to typo lirc bridge enabled wrong capability. Signed-off-by: Maxim Levitsky Acked-by: Jarod Wilson Signed-off-by: Mauro Carvalho Chehab --- drivers/media/IR/ir-lirc-codec.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/media/IR/ir-lirc-codec.c b/drivers/media/IR/ir-lirc-codec.c index 77b5946413c..e63f757d5d7 100644 --- a/drivers/media/IR/ir-lirc-codec.c +++ b/drivers/media/IR/ir-lirc-codec.c @@ -267,7 +267,7 @@ static int ir_lirc_register(struct input_dev *input_dev) features |= LIRC_CAN_SET_SEND_CARRIER; if (ir_dev->props->s_tx_duty_cycle) - features |= LIRC_CAN_SET_REC_DUTY_CYCLE; + features |= LIRC_CAN_SET_SEND_DUTY_CYCLE; } if (ir_dev->props->s_rx_carrier_range) -- cgit v1.2.3 From e0172fd373ab77a83ea952fd6a75c612e1b0bf9e Mon Sep 17 00:00:00 2001 From: Maxim Levitsky Date: Mon, 6 Sep 2010 18:26:09 -0300 Subject: V4L/DVB: IR: fix keys beeing stuck down forever The logic in ir_timer_keyup was inverted. In case that values aren't equal, the meaning of the time_is_after_eq_jiffies(ir->keyup_jiffies) is that ir->keyup_jiffies is after the the jiffies or equally that that jiffies are before the the ir->keyup_jiffies which is exactly the situation we want to avoid (that the timeout is in the future) Confusing Eh? Signed-off-by: Maxim Levitsky Acked-by: Jarod Wilson Cc: stable@kernel.org Signed-off-by: Mauro Carvalho Chehab --- drivers/media/IR/ir-keytable.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/media/IR/ir-keytable.c b/drivers/media/IR/ir-keytable.c index d00ef194f2e..7961d59f5ca 100644 --- a/drivers/media/IR/ir-keytable.c +++ b/drivers/media/IR/ir-keytable.c @@ -319,7 +319,7 @@ static void ir_timer_keyup(unsigned long cookie) * a keyup event might follow immediately after the keydown. */ spin_lock_irqsave(&ir->keylock, flags); - if (time_is_after_eq_jiffies(ir->keyup_jiffies)) + if (time_is_before_eq_jiffies(ir->keyup_jiffies)) ir_keyup(ir); spin_unlock_irqrestore(&ir->keylock, flags); } -- cgit v1.2.3 From 00a220aa98133dc43c6f7016c218aaf3afd66e11 Mon Sep 17 00:00:00 2001 From: Maxim Levitsky Date: Mon, 6 Sep 2010 18:26:10 -0300 Subject: V4L/DVB: IR: extend MCE keymap These keys are found on remote bundled with Toshiba Qosmio F50-10q. Found and tested by, Sami R Signed-off-by: Maxim Levitsky Acked-by: Jarod Wilson Signed-off-by: Mauro Carvalho Chehab --- drivers/media/IR/keymaps/rc-rc6-mce.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/media/IR/keymaps/rc-rc6-mce.c b/drivers/media/IR/keymaps/rc-rc6-mce.c index 64264f7f838..39557ad401b 100644 --- a/drivers/media/IR/keymaps/rc-rc6-mce.c +++ b/drivers/media/IR/keymaps/rc-rc6-mce.c @@ -19,6 +19,7 @@ static struct ir_scancode rc6_mce[] = { { 0x800f0416, KEY_PLAY }, { 0x800f0418, KEY_PAUSE }, + { 0x800f046e, KEY_PLAYPAUSE }, { 0x800f0419, KEY_STOP }, { 0x800f0417, KEY_RECORD }, @@ -37,6 +38,8 @@ static struct ir_scancode rc6_mce[] = { { 0x800f0411, KEY_VOLUMEDOWN }, { 0x800f0412, KEY_CHANNELUP }, { 0x800f0413, KEY_CHANNELDOWN }, + { 0x800f043a, KEY_BRIGHTNESSUP }, + { 0x800f0480, KEY_BRIGHTNESSDOWN }, { 0x800f0401, KEY_NUMERIC_1 }, { 0x800f0402, KEY_NUMERIC_2 }, -- cgit v1.2.3 From 90e12cec707204930934acdb5efce5f94a163a5f Mon Sep 17 00:00:00 2001 From: Olivier Grenie Date: Tue, 7 Sep 2010 12:50:45 -0300 Subject: V4L/DVB: dib7770: enable the current mirror To improve performance on DiB7770-devices enabling the current mirror is needed. This patch adds an option to the dib7000p-driver to do that and it creates a separate device-entry in dib0700-device to use those changes on hardware which is using the DiB7770. Signed-off-by: Olivier Grenie Signed-off-by: Patrick Boettcher Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb/dvb-usb/dib0700_devices.c | 53 ++++++++++++++++++++++++++++- drivers/media/dvb/frontends/dib7000p.c | 2 ++ drivers/media/dvb/frontends/dib7000p.h | 3 ++ 3 files changed, 57 insertions(+), 1 deletion(-) diff --git a/drivers/media/dvb/dvb-usb/dib0700_devices.c b/drivers/media/dvb/dvb-usb/dib0700_devices.c index ce66c5a96ba..385ce1c0a93 100644 --- a/drivers/media/dvb/dvb-usb/dib0700_devices.c +++ b/drivers/media/dvb/dvb-usb/dib0700_devices.c @@ -940,6 +940,57 @@ static int stk7070p_frontend_attach(struct dvb_usb_adapter *adap) return adap->fe == NULL ? -ENODEV : 0; } +/* STK7770P */ +static struct dib7000p_config dib7770p_dib7000p_config = { + .output_mpeg2_in_188_bytes = 1, + + .agc_config_count = 1, + .agc = &dib7070_agc_config, + .bw = &dib7070_bw_config_12_mhz, + .tuner_is_baseband = 1, + .spur_protect = 1, + + .gpio_dir = DIB7000P_GPIO_DEFAULT_DIRECTIONS, + .gpio_val = DIB7000P_GPIO_DEFAULT_VALUES, + .gpio_pwm_pos = DIB7000P_GPIO_DEFAULT_PWM_POS, + + .hostbus_diversity = 1, + .enable_current_mirror = 1, +}; + +static int stk7770p_frontend_attach(struct dvb_usb_adapter *adap) +{ + struct usb_device_descriptor *p = &adap->dev->udev->descriptor; + if (p->idVendor == cpu_to_le16(USB_VID_PINNACLE) && + p->idProduct == cpu_to_le16(USB_PID_PINNACLE_PCTV72E)) + dib0700_set_gpio(adap->dev, GPIO6, GPIO_OUT, 0); + else + dib0700_set_gpio(adap->dev, GPIO6, GPIO_OUT, 1); + msleep(10); + dib0700_set_gpio(adap->dev, GPIO9, GPIO_OUT, 1); + dib0700_set_gpio(adap->dev, GPIO4, GPIO_OUT, 1); + dib0700_set_gpio(adap->dev, GPIO7, GPIO_OUT, 1); + dib0700_set_gpio(adap->dev, GPIO10, GPIO_OUT, 0); + + dib0700_ctrl_clock(adap->dev, 72, 1); + + msleep(10); + dib0700_set_gpio(adap->dev, GPIO10, GPIO_OUT, 1); + msleep(10); + dib0700_set_gpio(adap->dev, GPIO0, GPIO_OUT, 1); + + if (dib7000p_i2c_enumeration(&adap->dev->i2c_adap, 1, 18, + &dib7770p_dib7000p_config) != 0) { + err("%s: dib7000p_i2c_enumeration failed. Cannot continue\n", + __func__); + return -ENODEV; + } + + adap->fe = dvb_attach(dib7000p_attach, &adap->dev->i2c_adap, 0x80, + &dib7770p_dib7000p_config); + return adap->fe == NULL ? -ENODEV : 0; +} + /* DIB807x generic */ static struct dibx000_agc_config dib807x_agc_config[2] = { { @@ -2406,7 +2457,7 @@ struct dvb_usb_device_properties dib0700_devices[] = { .pid_filter_count = 32, .pid_filter = stk70x0p_pid_filter, .pid_filter_ctrl = stk70x0p_pid_filter_ctrl, - .frontend_attach = stk7070p_frontend_attach, + .frontend_attach = stk7770p_frontend_attach, .tuner_attach = dib7770p_tuner_attach, DIB0700_DEFAULT_STREAMING_CONFIG(0x02), diff --git a/drivers/media/dvb/frontends/dib7000p.c b/drivers/media/dvb/frontends/dib7000p.c index 2e28b973dfd..73f59ab06c8 100644 --- a/drivers/media/dvb/frontends/dib7000p.c +++ b/drivers/media/dvb/frontends/dib7000p.c @@ -260,6 +260,8 @@ static void dib7000p_set_adc_state(struct dib7000p_state *state, enum dibx000_ad // dprintk( "908: %x, 909: %x\n", reg_908, reg_909); + reg_908 |= (state->cfg.enable_current_mirror & 1) << 7; + dib7000p_write_word(state, 908, reg_908); dib7000p_write_word(state, 909, reg_909); } diff --git a/drivers/media/dvb/frontends/dib7000p.h b/drivers/media/dvb/frontends/dib7000p.h index 805dd13a97e..04a744938cc 100644 --- a/drivers/media/dvb/frontends/dib7000p.h +++ b/drivers/media/dvb/frontends/dib7000p.h @@ -33,6 +33,9 @@ struct dib7000p_config { int (*agc_control) (struct dvb_frontend *, u8 before); u8 output_mode; + + u8 enable_current_mirror : 1; + }; #define DEFAULT_DIB7000P_I2C_ADDRESS 18 -- cgit v1.2.3 From 970d14c6cca8c71307a4d23fe373c5895175b2d7 Mon Sep 17 00:00:00 2001 From: Olivier Grenie Date: Tue, 7 Sep 2010 12:50:46 -0300 Subject: V4L/DVB: dib7000p: add disable sample and hold, and diversity delay parameter This patch improves the overall driver performance in diversity-reception scenarios. Signed-off-by: Olivier Grenie Signed-off-by: Patrick Boettcher Cc: stable@kernel.org Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb/dvb-usb/dib0700_devices.c | 1 + drivers/media/dvb/frontends/dib7000p.c | 6 +++++- drivers/media/dvb/frontends/dib7000p.h | 2 ++ 3 files changed, 8 insertions(+), 1 deletion(-) diff --git a/drivers/media/dvb/dvb-usb/dib0700_devices.c b/drivers/media/dvb/dvb-usb/dib0700_devices.c index 385ce1c0a93..e06acd1fecb 100644 --- a/drivers/media/dvb/dvb-usb/dib0700_devices.c +++ b/drivers/media/dvb/dvb-usb/dib0700_devices.c @@ -956,6 +956,7 @@ static struct dib7000p_config dib7770p_dib7000p_config = { .hostbus_diversity = 1, .enable_current_mirror = 1, + .disable_sample_and_hold = 0, }; static int stk7770p_frontend_attach(struct dvb_usb_adapter *adap) diff --git a/drivers/media/dvb/frontends/dib7000p.c b/drivers/media/dvb/frontends/dib7000p.c index 73f59ab06c8..3aed0d43392 100644 --- a/drivers/media/dvb/frontends/dib7000p.c +++ b/drivers/media/dvb/frontends/dib7000p.c @@ -260,6 +260,7 @@ static void dib7000p_set_adc_state(struct dib7000p_state *state, enum dibx000_ad // dprintk( "908: %x, 909: %x\n", reg_908, reg_909); + reg_909 |= (state->cfg.disable_sample_and_hold & 1) << 4; reg_908 |= (state->cfg.enable_current_mirror & 1) << 7; dib7000p_write_word(state, 908, reg_908); @@ -780,7 +781,10 @@ static void dib7000p_set_channel(struct dib7000p_state *state, struct dvb_fronte default: case GUARD_INTERVAL_1_32: value *= 1; break; } - state->div_sync_wait = (value * 3) / 2 + 32; // add 50% SFN margin + compensate for one DVSY-fifo TODO + if (state->cfg.diversity_delay == 0) + state->div_sync_wait = (value * 3) / 2 + 48; // add 50% SFN margin + compensate for one DVSY-fifo + else + state->div_sync_wait = (value * 3) / 2 + state->cfg.diversity_delay; // add 50% SFN margin + compensate for one DVSY-fifo /* deactive the possibility of diversity reception if extended interleaver */ state->div_force_off = !1 && ch->u.ofdm.transmission_mode != TRANSMISSION_MODE_8K; diff --git a/drivers/media/dvb/frontends/dib7000p.h b/drivers/media/dvb/frontends/dib7000p.h index 04a744938cc..da17345bf5b 100644 --- a/drivers/media/dvb/frontends/dib7000p.h +++ b/drivers/media/dvb/frontends/dib7000p.h @@ -33,8 +33,10 @@ struct dib7000p_config { int (*agc_control) (struct dvb_frontend *, u8 before); u8 output_mode; + u8 disable_sample_and_hold : 1; u8 enable_current_mirror : 1; + u8 diversity_delay; }; -- cgit v1.2.3 From 3cdadc50bbe8f04c1231c8af614cafd7ddd622bf Mon Sep 17 00:00:00 2001 From: Richard Zidlicky Date: Tue, 24 Aug 2010 09:52:36 -0300 Subject: V4L/DVB: dvb: fix smscore_getbuffer() logic Drivers shouldn't sleep while holding a spinlock. A previous workaround were to release the spinlock before callinc schedule(). This patch uses a different approach: it just waits for the siano hardware to answer. Signed-off-by: Richard Zidlicky Cc: stable@kernel.org Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb/siano/smscoreapi.c | 31 ++++++++++++------------------- 1 file changed, 12 insertions(+), 19 deletions(-) diff --git a/drivers/media/dvb/siano/smscoreapi.c b/drivers/media/dvb/siano/smscoreapi.c index d93468cd3a8..ff3b0fa901b 100644 --- a/drivers/media/dvb/siano/smscoreapi.c +++ b/drivers/media/dvb/siano/smscoreapi.c @@ -1098,33 +1098,26 @@ EXPORT_SYMBOL_GPL(smscore_onresponse); * * @return pointer to descriptor on success, NULL on error. */ -struct smscore_buffer_t *smscore_getbuffer(struct smscore_device_t *coredev) + +struct smscore_buffer_t *get_entry(struct smscore_device_t *coredev) { struct smscore_buffer_t *cb = NULL; unsigned long flags; - DEFINE_WAIT(wait); - spin_lock_irqsave(&coredev->bufferslock, flags); - - /* This function must return a valid buffer, since the buffer list is - * finite, we check that there is an available buffer, if not, we wait - * until such buffer become available. - */ - - prepare_to_wait(&coredev->buffer_mng_waitq, &wait, TASK_INTERRUPTIBLE); - if (list_empty(&coredev->buffers)) { - spin_unlock_irqrestore(&coredev->bufferslock, flags); - schedule(); - spin_lock_irqsave(&coredev->bufferslock, flags); + if (!list_empty(&coredev->buffers)) { + cb = (struct smscore_buffer_t *) coredev->buffers.next; + list_del(&cb->entry); } + spin_unlock_irqrestore(&coredev->bufferslock, flags); + return cb; +} - finish_wait(&coredev->buffer_mng_waitq, &wait); - - cb = (struct smscore_buffer_t *) coredev->buffers.next; - list_del(&cb->entry); +struct smscore_buffer_t *smscore_getbuffer(struct smscore_device_t *coredev) +{ + struct smscore_buffer_t *cb = NULL; - spin_unlock_irqrestore(&coredev->bufferslock, flags); + wait_event(coredev->buffer_mng_waitq, (cb = get_entry(coredev))); return cb; } -- cgit v1.2.3 From c10469c637602c2385e2993d8c730cc44fd47d23 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Sat, 11 Sep 2010 11:37:51 -0300 Subject: V4L/DVB: cx231xx: Avoid an OOPS when card is unknown (card=0) As reported by: Carlos Americo Domiciano : [ 220.033500] cx231xx v4l2 driver loaded. [ 220.033571] cx231xx #0: New device Conexant Corporation Polaris AV Capturb @ 480 Mbps (1554:5010) with 6 interfaces [ 220.033577] cx231xx #0: registering interface 0 [ 220.033591] cx231xx #0: registering interface 1 [ 220.033654] cx231xx #0: registering interface 6 [ 220.033910] cx231xx #0: Identified as Unknown CX231xx video grabber (card=0) [ 220.033946] BUG: unable to handle kernel NULL pointer dereference at (null) [ 220.033955] IP: [] cx231xx_pre_card_setup+0x5d/0xb0 [cx231xx] Thanks-to: Carlos Americo Domiciano Cc: stable@kernel.org Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/cx231xx/cx231xx-cards.c | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-) diff --git a/drivers/media/video/cx231xx/cx231xx-cards.c b/drivers/media/video/cx231xx/cx231xx-cards.c index 5b7c9a948a0..f2a4900014b 100644 --- a/drivers/media/video/cx231xx/cx231xx-cards.c +++ b/drivers/media/video/cx231xx/cx231xx-cards.c @@ -229,14 +229,16 @@ void cx231xx_pre_card_setup(struct cx231xx *dev) dev->board.name, dev->model); /* set the direction for GPIO pins */ - cx231xx_set_gpio_direction(dev, dev->board.tuner_gpio->bit, 1); - cx231xx_set_gpio_value(dev, dev->board.tuner_gpio->bit, 1); - cx231xx_set_gpio_direction(dev, dev->board.tuner_sif_gpio, 1); + if (dev->board.tuner_gpio) { + cx231xx_set_gpio_direction(dev, dev->board.tuner_gpio->bit, 1); + cx231xx_set_gpio_value(dev, dev->board.tuner_gpio->bit, 1); + cx231xx_set_gpio_direction(dev, dev->board.tuner_sif_gpio, 1); - /* request some modules if any required */ + /* request some modules if any required */ - /* reset the Tuner */ - cx231xx_gpio_set(dev, dev->board.tuner_gpio); + /* reset the Tuner */ + cx231xx_gpio_set(dev, dev->board.tuner_gpio); + } /* set the mode to Analog mode initially */ cx231xx_set_mode(dev, CX231XX_ANALOG_MODE); -- cgit v1.2.3 From 2fc11536cf5c0b8eb4eb7e01a2a672a189e9280f Mon Sep 17 00:00:00 2001 From: Hans Verkuil Date: Tue, 7 Sep 2010 06:10:45 -0300 Subject: V4L/DVB: videobuf-dma-sg: set correct size in last sg element This fixes a nasty memory corruption bug when using userptr I/O. The function videobuf_pages_to_sg() sets up the scatter-gather list for the DMA transfer to the userspace pages. The first transfer is setup correctly (the size is set to PAGE_SIZE - offset), but all other transfers have size PAGE_SIZE. This is wrong for the last transfer which may be less than PAGE_SIZE. Most, if not all, drivers will program the boards DMA engine correctly, i.e. even though the size in the last sg element is wrong, they will do their own size calculations and make sure the right amount is DMA-ed, and so seemingly prevent memory corruption. However, behind the scenes the dynamic DMA mapping support (in lib/swiotlb.c) may create bounce buffers if the memory pages are not in DMA-able memory. This happens for example on a 64-bit linux with a board that only supports 32-bit DMA. These bounce buffers DO use the information in the sg list to determine the size. So while the DMA engine transfers the correct amount of data, when the data is 'bounced' back too much is copied, causing buffer overwrites. The fix is simple: calculate and set the correct size for the last sg list element. Signed-off-by: Hans Verkuil Cc: stable@kernel.org Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/videobuf-dma-sg.c | 11 +++++++---- include/media/videobuf-dma-sg.h | 1 + 2 files changed, 8 insertions(+), 4 deletions(-) diff --git a/drivers/media/video/videobuf-dma-sg.c b/drivers/media/video/videobuf-dma-sg.c index 06f9a9c2a39..2ad0bc252b0 100644 --- a/drivers/media/video/videobuf-dma-sg.c +++ b/drivers/media/video/videobuf-dma-sg.c @@ -94,7 +94,7 @@ err: * must free the memory. */ static struct scatterlist *videobuf_pages_to_sg(struct page **pages, - int nr_pages, int offset) + int nr_pages, int offset, size_t size) { struct scatterlist *sglist; int i; @@ -110,12 +110,14 @@ static struct scatterlist *videobuf_pages_to_sg(struct page **pages, /* DMA to highmem pages might not work */ goto highmem; sg_set_page(&sglist[0], pages[0], PAGE_SIZE - offset, offset); + size -= PAGE_SIZE - offset; for (i = 1; i < nr_pages; i++) { if (NULL == pages[i]) goto nopage; if (PageHighMem(pages[i])) goto highmem; - sg_set_page(&sglist[i], pages[i], PAGE_SIZE, 0); + sg_set_page(&sglist[i], pages[i], min(PAGE_SIZE, size), 0); + size -= min(PAGE_SIZE, size); } return sglist; @@ -170,7 +172,8 @@ static int videobuf_dma_init_user_locked(struct videobuf_dmabuf *dma, first = (data & PAGE_MASK) >> PAGE_SHIFT; last = ((data+size-1) & PAGE_MASK) >> PAGE_SHIFT; - dma->offset = data & ~PAGE_MASK; + dma->offset = data & ~PAGE_MASK; + dma->size = size; dma->nr_pages = last-first+1; dma->pages = kmalloc(dma->nr_pages * sizeof(struct page *), GFP_KERNEL); if (NULL == dma->pages) @@ -252,7 +255,7 @@ int videobuf_dma_map(struct device *dev, struct videobuf_dmabuf *dma) if (dma->pages) { dma->sglist = videobuf_pages_to_sg(dma->pages, dma->nr_pages, - dma->offset); + dma->offset, dma->size); } if (dma->vaddr) { dma->sglist = videobuf_vmalloc_to_sg(dma->vaddr, diff --git a/include/media/videobuf-dma-sg.h b/include/media/videobuf-dma-sg.h index 97e07f46a0f..aa4ebb42a56 100644 --- a/include/media/videobuf-dma-sg.h +++ b/include/media/videobuf-dma-sg.h @@ -48,6 +48,7 @@ struct videobuf_dmabuf { /* for userland buffer */ int offset; + size_t size; struct page **pages; /* for kernel buffers */ -- cgit v1.2.3 From 04d174e99a6eca2f62b56c10ae1d7d0499d83e9d Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Jean-Fran=C3=A7ois=20Moine?= Date: Mon, 13 Sep 2010 05:22:37 -0300 Subject: V4L/DVB: gspca - sn9c20x: Bad transfer size of Bayer images MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit As the end of frame marker does not contain any pixel, it must not be transferred. Reported-by: Ivo Jager Signed-off-by: Jean-François Moine Cc: stable@kernel.org Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/gspca/sn9c20x.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/media/video/gspca/sn9c20x.c b/drivers/media/video/gspca/sn9c20x.c index 83a718f0f3f..9052d570255 100644 --- a/drivers/media/video/gspca/sn9c20x.c +++ b/drivers/media/video/gspca/sn9c20x.c @@ -2357,8 +2357,7 @@ static void sd_pkt_scan(struct gspca_dev *gspca_dev, (data[33] << 10); avg_lum >>= 9; atomic_set(&sd->avg_lum, avg_lum); - gspca_frame_add(gspca_dev, LAST_PACKET, - data, len); + gspca_frame_add(gspca_dev, LAST_PACKET, NULL, 0); return; } if (gspca_dev->last_packet_type == LAST_PACKET) { -- cgit v1.2.3 From 1b376dac05058ac5c9616a507d95c19ea5ea2646 Mon Sep 17 00:00:00 2001 From: Stefan Ringel Date: Thu, 9 Sep 2010 14:45:22 -0300 Subject: V4L/DVB: tm6000: bugfix data handling Signed-off-by: Stefan Ringel Signed-off-by: Mauro Carvalho Chehab --- drivers/staging/tm6000/tm6000-input.c | 61 ++++++++++++++++++++++------------- 1 file changed, 39 insertions(+), 22 deletions(-) diff --git a/drivers/staging/tm6000/tm6000-input.c b/drivers/staging/tm6000/tm6000-input.c index 32f7a0af693..54f7667cc70 100644 --- a/drivers/staging/tm6000/tm6000-input.c +++ b/drivers/staging/tm6000/tm6000-input.c @@ -46,7 +46,7 @@ MODULE_PARM_DESC(enable_ir, "enable ir (default is enable"); } struct tm6000_ir_poll_result { - u8 rc_data[4]; + u16 rc_data; }; struct tm6000_IR { @@ -60,9 +60,9 @@ struct tm6000_IR { int polling; struct delayed_work work; u8 wait:1; + u8 key:1; struct urb *int_urb; u8 *urb_data; - u8 key:1; int (*get_key) (struct tm6000_IR *, struct tm6000_ir_poll_result *); @@ -122,13 +122,14 @@ static void tm6000_ir_urb_received(struct urb *urb) if (urb->status != 0) printk(KERN_INFO "not ready\n"); - else if (urb->actual_length > 0) + else if (urb->actual_length > 0) { memcpy(ir->urb_data, urb->transfer_buffer, urb->actual_length); - dprintk("data %02x %02x %02x %02x\n", ir->urb_data[0], - ir->urb_data[1], ir->urb_data[2], ir->urb_data[3]); + dprintk("data %02x %02x %02x %02x\n", ir->urb_data[0], + ir->urb_data[1], ir->urb_data[2], ir->urb_data[3]); - ir->key = 1; + ir->key = 1; + } rc = usb_submit_urb(urb, GFP_ATOMIC); } @@ -140,30 +141,47 @@ static int default_polling_getkey(struct tm6000_IR *ir, int rc; u8 buf[2]; - if (ir->wait && !&dev->int_in) { - poll_result->rc_data[0] = 0xff; + if (ir->wait && !&dev->int_in) return 0; - } if (&dev->int_in) { - poll_result->rc_data[0] = ir->urb_data[0]; - poll_result->rc_data[1] = ir->urb_data[1]; + if (ir->ir.ir_type == IR_TYPE_RC5) + poll_result->rc_data = ir->urb_data[0]; + else + poll_result->rc_data = ir->urb_data[0] | ir->urb_data[1] << 8; } else { tm6000_set_reg(dev, REQ_04_EN_DISABLE_MCU_INT, 2, 0); msleep(10); tm6000_set_reg(dev, REQ_04_EN_DISABLE_MCU_INT, 2, 1); msleep(10); - rc = tm6000_read_write_usb(dev, USB_DIR_IN | USB_TYPE_VENDOR | - USB_RECIP_DEVICE, REQ_02_GET_IR_CODE, 0, 0, buf, 1); + if (ir->ir.ir_type == IR_TYPE_RC5) { + rc = tm6000_read_write_usb(dev, USB_DIR_IN | + USB_TYPE_VENDOR | USB_RECIP_DEVICE, + REQ_02_GET_IR_CODE, 0, 0, buf, 1); - msleep(10); + msleep(10); - dprintk("read data=%02x\n", buf[0]); - if (rc < 0) - return rc; + dprintk("read data=%02x\n", buf[0]); + if (rc < 0) + return rc; - poll_result->rc_data[0] = buf[0]; + poll_result->rc_data = buf[0]; + } else { + rc = tm6000_read_write_usb(dev, USB_DIR_IN | + USB_TYPE_VENDOR | USB_RECIP_DEVICE, + REQ_02_GET_IR_CODE, 0, 0, buf, 2); + + msleep(10); + + dprintk("read data=%04x\n", buf[0] | buf[1] << 8); + if (rc < 0) + return rc; + + poll_result->rc_data = buf[0] | buf[1] << 8; + } + if ((poll_result->rc_data & 0x00ff) != 0xff) + ir->key = 1; } return 0; } @@ -180,12 +198,11 @@ static void tm6000_ir_handle_key(struct tm6000_IR *ir) return; } - dprintk("ir->get_key result data=%02x %02x\n", - poll_result.rc_data[0], poll_result.rc_data[1]); + dprintk("ir->get_key result data=%04x\n", poll_result.rc_data); - if (poll_result.rc_data[0] != 0xff && ir->key == 1) { + if (ir->key) { ir_input_keydown(ir->input->input_dev, &ir->ir, - poll_result.rc_data[0] | poll_result.rc_data[1] << 8); + (u32)poll_result.rc_data); ir_input_nokey(ir->input->input_dev, &ir->ir); ir->key = 0; -- cgit v1.2.3 From 5384a12b23160e11ff949a94172051476d308b66 Mon Sep 17 00:00:00 2001 From: Baruch Siach Date: Tue, 27 Jul 2010 09:06:07 -0300 Subject: V4L/DVB: mx2_camera: fix a race causing NULL dereference The mx25_camera_irq irq handler may get called after the camera has been deactivated (from mx2_camera_deactivate). Detect this situation, and bail out. Signed-off-by: Baruch Siach Signed-off-by: Guennadi Liakhovetski Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/mx2_camera.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/media/video/mx2_camera.c b/drivers/media/video/mx2_camera.c index 66ff174151b..b6ea67221d1 100644 --- a/drivers/media/video/mx2_camera.c +++ b/drivers/media/video/mx2_camera.c @@ -378,6 +378,9 @@ static void mx25_camera_frame_done(struct mx2_camera_dev *pcdev, int fb, spin_lock_irqsave(&pcdev->lock, flags); + if (*fb_active == NULL) + goto out; + vb = &(*fb_active)->vb; dev_dbg(pcdev->dev, "%s (vb=0x%p) 0x%08lx %d\n", __func__, vb, vb->baddr, vb->bsize); @@ -402,6 +405,7 @@ static void mx25_camera_frame_done(struct mx2_camera_dev *pcdev, int fb, *fb_active = buf; +out: spin_unlock_irqrestore(&pcdev->lock, flags); } -- cgit v1.2.3 From 6b6d33c746ace7bd0dbbdde674d3fb1100ab081d Mon Sep 17 00:00:00 2001 From: Michael Grzeschik Date: Tue, 3 Aug 2010 07:57:44 -0300 Subject: V4L/DVB: mt9m111: cropcap and s_crop check if type is VIDEO_CAPTURE Signed-off-by: Philipp Wiesner Signed-off-by: Michael Grzeschik Signed-off-by: Guennadi Liakhovetski Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/mt9m111.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/media/video/mt9m111.c b/drivers/media/video/mt9m111.c index 758a4db27d6..28df1752202 100644 --- a/drivers/media/video/mt9m111.c +++ b/drivers/media/video/mt9m111.c @@ -447,6 +447,9 @@ static int mt9m111_s_crop(struct v4l2_subdev *sd, struct v4l2_crop *a) dev_dbg(&client->dev, "%s left=%d, top=%d, width=%d, height=%d\n", __func__, rect.left, rect.top, rect.width, rect.height); + if (a->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) + return -EINVAL; + ret = mt9m111_make_rect(client, &rect); if (!ret) mt9m111->rect = rect; @@ -466,12 +469,14 @@ static int mt9m111_g_crop(struct v4l2_subdev *sd, struct v4l2_crop *a) static int mt9m111_cropcap(struct v4l2_subdev *sd, struct v4l2_cropcap *a) { + if (a->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) + return -EINVAL; + a->bounds.left = MT9M111_MIN_DARK_COLS; a->bounds.top = MT9M111_MIN_DARK_ROWS; a->bounds.width = MT9M111_MAX_WIDTH; a->bounds.height = MT9M111_MAX_HEIGHT; a->defrect = a->bounds; - a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; a->pixelaspect.numerator = 1; a->pixelaspect.denominator = 1; -- cgit v1.2.3 From 01f5a394eac48b74c84434e95e74cd172b0682c3 Mon Sep 17 00:00:00 2001 From: Michael Grzeschik Date: Tue, 3 Aug 2010 07:57:45 -0300 Subject: V4L/DVB: mt9m111: added current colorspace at g_fmt Signed-off-by: Michael Grzeschik Signed-off-by: Guennadi Liakhovetski Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/mt9m111.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/media/video/mt9m111.c b/drivers/media/video/mt9m111.c index 28df1752202..c71af4e0e51 100644 --- a/drivers/media/video/mt9m111.c +++ b/drivers/media/video/mt9m111.c @@ -492,6 +492,7 @@ static int mt9m111_g_fmt(struct v4l2_subdev *sd, mf->width = mt9m111->rect.width; mf->height = mt9m111->rect.height; mf->code = mt9m111->fmt->code; + mf->colorspace = mt9m111->fmt->colorspace; mf->field = V4L2_FIELD_NONE; return 0; -- cgit v1.2.3 From 23f0cb62ba3a1a11ab02cb0675f28befc56c89b9 Mon Sep 17 00:00:00 2001 From: Ionut Gabriel Popescu Date: Fri, 3 Sep 2010 18:20:41 -0300 Subject: V4L/DVB: mt9v022.c: Fixed compilation warning The drivers/media/video/mt9v022.c file, on line 405, tries a "case 0" o a v4l2_mbus_pixelcode enum which don't have an 0 value element, so I got a compile warning. That "case" is useless so it can be removed. Signed-off-by: Ionut Gabriel Popescu Signed-off-by: Guennadi Liakhovetski Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/mt9v022.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/drivers/media/video/mt9v022.c b/drivers/media/video/mt9v022.c index e7cd23cd639..b48473c7896 100644 --- a/drivers/media/video/mt9v022.c +++ b/drivers/media/video/mt9v022.c @@ -402,9 +402,6 @@ static int mt9v022_s_fmt(struct v4l2_subdev *sd, if (mt9v022->model != V4L2_IDENT_MT9V022IX7ATC) return -EINVAL; break; - case 0: - /* No format change, only geometry */ - break; default: return -EINVAL; } -- cgit v1.2.3 From b17a200f923070104a5b97085ed09ba0f682f637 Mon Sep 17 00:00:00 2001 From: Pawel Osciak Date: Fri, 10 Sep 2010 02:02:32 -0300 Subject: V4L/DVB: v4l: mem2mem_testdev: fix errorenous comparison Output buffer has to be at least the size of input buffer, not the other way around. Signed-off-by: Pawel Osciak Signed-off-by: Kyungmin Park Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/mem2mem_testdev.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/media/video/mem2mem_testdev.c b/drivers/media/video/mem2mem_testdev.c index 4525335f9bd..d31ec256505 100644 --- a/drivers/media/video/mem2mem_testdev.c +++ b/drivers/media/video/mem2mem_testdev.c @@ -239,7 +239,7 @@ static int device_process(struct m2mtest_ctx *ctx, return -EFAULT; } - if (in_buf->vb.size < out_buf->vb.size) { + if (in_buf->vb.size > out_buf->vb.size) { v4l2_err(&dev->v4l2_dev, "Output buffer is too small\n"); return -EINVAL; } -- cgit v1.2.3 From 71088bad7426650e4ea5fb4182580ea8458442e7 Mon Sep 17 00:00:00 2001 From: Pawel Osciak Date: Fri, 10 Sep 2010 02:05:48 -0300 Subject: V4L/DVB: v4l: mem2mem_testdev: add missing release for video_device Video device was not being released on driver remove. Signed-off-by: Pawel Osciak Signed-off-by: Kyungmin Park Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/mem2mem_testdev.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/media/video/mem2mem_testdev.c b/drivers/media/video/mem2mem_testdev.c index d31ec256505..a7210d98138 100644 --- a/drivers/media/video/mem2mem_testdev.c +++ b/drivers/media/video/mem2mem_testdev.c @@ -1014,6 +1014,7 @@ static int m2mtest_remove(struct platform_device *pdev) v4l2_m2m_release(dev->m2m_dev); del_timer_sync(&dev->timer); video_unregister_device(dev->vfd); + video_device_release(dev->vfd); v4l2_device_unregister(&dev->v4l2_dev); kfree(dev); -- cgit v1.2.3 From fc00a1d90d7b64e44c2475833cc3021066f67ea7 Mon Sep 17 00:00:00 2001 From: Andy Walls Date: Thu, 16 Sep 2010 20:54:47 -0300 Subject: V4L/DVB: cx25840: Fix typo in volume control initialization: 65335 vs. 65535 The wrong value for the volume control limit, 65335 vs. 65535, prevents proper cx25840 v4l2_subdevice initialization. Reported-by: Igor M. liplianin Signed-off-by: Andy Walls Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/cx25840/cx25840-core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/media/video/cx25840/cx25840-core.c b/drivers/media/video/cx25840/cx25840-core.c index 86ca8c2359d..f5a3e74c3c7 100644 --- a/drivers/media/video/cx25840/cx25840-core.c +++ b/drivers/media/video/cx25840/cx25840-core.c @@ -1996,7 +1996,7 @@ static int cx25840_probe(struct i2c_client *client, state->volume = v4l2_ctrl_new_std(&state->hdl, &cx25840_audio_ctrl_ops, V4L2_CID_AUDIO_VOLUME, - 0, 65335, 65535 / 100, default_volume); + 0, 65535, 65535 / 100, default_volume); state->mute = v4l2_ctrl_new_std(&state->hdl, &cx25840_audio_ctrl_ops, V4L2_CID_AUDIO_MUTE, 0, 1, 1, 0); -- cgit v1.2.3 From 405707985594169cfd0b1d97d29fcb4b4c6f2ac9 Mon Sep 17 00:00:00 2001 From: Dan Rosenberg Date: Wed, 15 Sep 2010 18:44:22 -0300 Subject: V4L/DVB: ivtvfb: prevent reading uninitialized stack memory The FBIOGET_VBLANK device ioctl allows unprivileged users to read 16 bytes of uninitialized stack memory, because the "reserved" member of the fb_vblank struct declared on the stack is not altered or zeroed before being copied back to the user. This patch takes care of it. Signed-off-by: Dan Rosenberg Signed-off-by: Andy Walls Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/ivtv/ivtvfb.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/media/video/ivtv/ivtvfb.c b/drivers/media/video/ivtv/ivtvfb.c index be03a712731..f0316d02f09 100644 --- a/drivers/media/video/ivtv/ivtvfb.c +++ b/drivers/media/video/ivtv/ivtvfb.c @@ -466,6 +466,8 @@ static int ivtvfb_ioctl(struct fb_info *info, unsigned int cmd, unsigned long ar struct fb_vblank vblank; u32 trace; + memset(&vblank, 0, sizeof(struct fb_vblank)); + vblank.flags = FB_VBLANK_HAVE_COUNT |FB_VBLANK_HAVE_VCOUNT | FB_VBLANK_HAVE_VSYNC; trace = read_reg(IVTV_REG_DEC_LINE_FIELD) >> 16; -- cgit v1.2.3 From 9275b32bced808bd57bdf3884748ed1126ba90e0 Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Sun, 12 Sep 2010 08:31:29 -0300 Subject: V4L/DVB: uvcvideo: Fix support for Medion Akoya All-in-one PC integrated webcam The camera requires the STREAM_NO_FID quirk. Add a corresponding entry in the device IDs list. Signed-off-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/uvc/uvc_driver.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/drivers/media/video/uvc/uvc_driver.c b/drivers/media/video/uvc/uvc_driver.c index 8bdd940f32e..63756ca4153 100644 --- a/drivers/media/video/uvc/uvc_driver.c +++ b/drivers/media/video/uvc/uvc_driver.c @@ -2091,6 +2091,15 @@ static struct usb_device_id uvc_ids[] = { .bInterfaceProtocol = 0, .driver_info = UVC_QUIRK_PROBE_MINMAX | UVC_QUIRK_PROBE_DEF }, + /* IMC Networks (Medion Akoya) */ + { .match_flags = USB_DEVICE_ID_MATCH_DEVICE + | USB_DEVICE_ID_MATCH_INT_INFO, + .idVendor = 0x13d3, + .idProduct = 0x5103, + .bInterfaceClass = USB_CLASS_VIDEO, + .bInterfaceSubClass = 1, + .bInterfaceProtocol = 0, + .driver_info = UVC_QUIRK_STREAM_NO_FID }, /* Syntek (HP Spartan) */ { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | USB_DEVICE_ID_MATCH_INT_INFO, -- cgit v1.2.3 From 86d8b6abbbc973a1dd7d3c8f9e3c3e06131703b2 Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Thu, 16 Sep 2010 12:37:26 -0300 Subject: V4L/DVB: uvcvideo: Restrict frame rates for Chicony CNF7129 webcam At all frame rates except 30fps and 5fps the camera produces very dark pictures. Auto-exposure is probably disabled by the camera at all frame rates except 30fps, making them pretty unusable. Work around the problem by introducing a new RESTRICT_FRAME_RATE quirk that disables all the frame rates except the default one. Signed-off-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/uvc/uvc_driver.c | 15 +++++++++++++++ drivers/media/video/uvc/uvcvideo.h | 1 + 2 files changed, 16 insertions(+) diff --git a/drivers/media/video/uvc/uvc_driver.c b/drivers/media/video/uvc/uvc_driver.c index 63756ca4153..2ac85d8984f 100644 --- a/drivers/media/video/uvc/uvc_driver.c +++ b/drivers/media/video/uvc/uvc_driver.c @@ -486,6 +486,12 @@ static int uvc_parse_format(struct uvc_device *dev, max(frame->dwFrameInterval[0], frame->dwDefaultFrameInterval)); + if (dev->quirks & UVC_QUIRK_RESTRICT_FRAME_RATE) { + frame->bFrameIntervalType = 1; + frame->dwFrameInterval[0] = + frame->dwDefaultFrameInterval; + } + uvc_trace(UVC_TRACE_DESCR, "- %ux%u (%u.%u fps)\n", frame->wWidth, frame->wHeight, 10000000/frame->dwDefaultFrameInterval, @@ -2026,6 +2032,15 @@ static struct usb_device_id uvc_ids[] = { .bInterfaceClass = USB_CLASS_VENDOR_SPEC, .bInterfaceSubClass = 1, .bInterfaceProtocol = 0 }, + /* Chicony CNF7129 (Asus EEE 100HE) */ + { .match_flags = USB_DEVICE_ID_MATCH_DEVICE + | USB_DEVICE_ID_MATCH_INT_INFO, + .idVendor = 0x04f2, + .idProduct = 0xb071, + .bInterfaceClass = USB_CLASS_VIDEO, + .bInterfaceSubClass = 1, + .bInterfaceProtocol = 0, + .driver_info = UVC_QUIRK_RESTRICT_FRAME_RATE }, /* Alcor Micro AU3820 (Future Boy PC USB Webcam) */ { .match_flags = USB_DEVICE_ID_MATCH_DEVICE | USB_DEVICE_ID_MATCH_INT_INFO, diff --git a/drivers/media/video/uvc/uvcvideo.h b/drivers/media/video/uvc/uvcvideo.h index bdacf3beabf..892e0e51916 100644 --- a/drivers/media/video/uvc/uvcvideo.h +++ b/drivers/media/video/uvc/uvcvideo.h @@ -182,6 +182,7 @@ struct uvc_xu_control { #define UVC_QUIRK_IGNORE_SELECTOR_UNIT 0x00000020 #define UVC_QUIRK_FIX_BANDWIDTH 0x00000080 #define UVC_QUIRK_PROBE_DEF 0x00000100 +#define UVC_QUIRK_RESTRICT_FRAME_RATE 0x00000200 /* Format flags */ #define UVC_FMT_FLAG_COMPRESSED 0x00000001 -- cgit v1.2.3 From 81c69fc200bfa2f3a8b2fed614d1c6670c4a7e14 Mon Sep 17 00:00:00 2001 From: Pawel Osciak Date: Mon, 6 Sep 2010 03:53:43 -0300 Subject: V4L/DVB: v4l: s5p-fimc: Fix return value on probe() failure On failed create_workqueue() fimc_probe() was returning 0. Signed-off-by: Pawel Osciak Signed-off-by: Kyungmin Park Signed-off-by: Marek Szyprowski Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/s5p-fimc/fimc-core.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/media/video/s5p-fimc/fimc-core.c b/drivers/media/video/s5p-fimc/fimc-core.c index 1beb2263d18..8cd1ef07392 100644 --- a/drivers/media/video/s5p-fimc/fimc-core.c +++ b/drivers/media/video/s5p-fimc/fimc-core.c @@ -1415,8 +1415,10 @@ static int fimc_probe(struct platform_device *pdev) } fimc->work_queue = create_workqueue(dev_name(&fimc->pdev->dev)); - if (!fimc->work_queue) + if (!fimc->work_queue) { + ret = -ENOMEM; goto err_irq; + } ret = fimc_register_m2m_device(fimc); if (ret) -- cgit v1.2.3 From ddc79e0fdc16c05c3ff7f9b6ae9052bda0506108 Mon Sep 17 00:00:00 2001 From: Sylwester Nawrocki Date: Mon, 6 Sep 2010 03:53:44 -0300 Subject: V4L/DVB: v4l: s5p-fimc: Fix 3-planar formats handling and pixel offset error on S5PV210 SoCs Fix DMA engine pixel offset calculation for 3-planar YUV formats. On S5PV210 SoCs horizontal offset is applied as number of pixels, not bytes per line. [mchehab@redhat.com: CodingStyle cleanup] Signed-off-by: Sylwester Nawrocki Signed-off-by: Kyungmin Park Signed-off-by: Marek Szyprowski Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/s5p-fimc/fimc-core.c | 87 ++++++++++++++------------------ 1 file changed, 37 insertions(+), 50 deletions(-) diff --git a/drivers/media/video/s5p-fimc/fimc-core.c b/drivers/media/video/s5p-fimc/fimc-core.c index 8cd1ef07392..6961c55baf9 100644 --- a/drivers/media/video/s5p-fimc/fimc-core.c +++ b/drivers/media/video/s5p-fimc/fimc-core.c @@ -393,6 +393,37 @@ static void fimc_set_yuv_order(struct fimc_ctx *ctx) dbg("ctx->out_order_1p= %d", ctx->out_order_1p); } +static void fimc_prepare_dma_offset(struct fimc_ctx *ctx, struct fimc_frame *f) +{ + struct samsung_fimc_variant *variant = ctx->fimc_dev->variant; + + f->dma_offset.y_h = f->offs_h; + if (!variant->pix_hoff) + f->dma_offset.y_h *= (f->fmt->depth >> 3); + + f->dma_offset.y_v = f->offs_v; + + f->dma_offset.cb_h = f->offs_h; + f->dma_offset.cb_v = f->offs_v; + + f->dma_offset.cr_h = f->offs_h; + f->dma_offset.cr_v = f->offs_v; + + if (!variant->pix_hoff) { + if (f->fmt->planes_cnt == 3) { + f->dma_offset.cb_h >>= 1; + f->dma_offset.cr_h >>= 1; + } + if (f->fmt->color == S5P_FIMC_YCBCR420) { + f->dma_offset.cb_v >>= 1; + f->dma_offset.cr_v >>= 1; + } + } + + dbg("in_offset: color= %d, y_h= %d, y_v= %d", + f->fmt->color, f->dma_offset.y_h, f->dma_offset.y_v); +} + /** * fimc_prepare_config - check dimensions, operation and color mode * and pre-calculate offset and the scaling coefficients. @@ -406,7 +437,6 @@ static int fimc_prepare_config(struct fimc_ctx *ctx, u32 flags) { struct fimc_frame *s_frame, *d_frame; struct fimc_vid_buffer *buf = NULL; - struct samsung_fimc_variant *variant = ctx->fimc_dev->variant; int ret = 0; s_frame = &ctx->s_frame; @@ -419,61 +449,16 @@ static int fimc_prepare_config(struct fimc_ctx *ctx, u32 flags) swap(d_frame->width, d_frame->height); } - /* Prepare the output offset ratios for scaler. */ - d_frame->dma_offset.y_h = d_frame->offs_h; - if (!variant->pix_hoff) - d_frame->dma_offset.y_h *= (d_frame->fmt->depth >> 3); - - d_frame->dma_offset.y_v = d_frame->offs_v; + /* Prepare the DMA offset ratios for scaler. */ + fimc_prepare_dma_offset(ctx, &ctx->s_frame); + fimc_prepare_dma_offset(ctx, &ctx->d_frame); - d_frame->dma_offset.cb_h = d_frame->offs_h; - d_frame->dma_offset.cb_v = d_frame->offs_v; - - d_frame->dma_offset.cr_h = d_frame->offs_h; - d_frame->dma_offset.cr_v = d_frame->offs_v; - - if (!variant->pix_hoff && d_frame->fmt->planes_cnt == 3) { - d_frame->dma_offset.cb_h >>= 1; - d_frame->dma_offset.cb_v >>= 1; - d_frame->dma_offset.cr_h >>= 1; - d_frame->dma_offset.cr_v >>= 1; - } - - dbg("out offset: color= %d, y_h= %d, y_v= %d", - d_frame->fmt->color, - d_frame->dma_offset.y_h, d_frame->dma_offset.y_v); - - /* Prepare the input offset ratios for scaler. */ - s_frame->dma_offset.y_h = s_frame->offs_h; - if (!variant->pix_hoff) - s_frame->dma_offset.y_h *= (s_frame->fmt->depth >> 3); - s_frame->dma_offset.y_v = s_frame->offs_v; - - s_frame->dma_offset.cb_h = s_frame->offs_h; - s_frame->dma_offset.cb_v = s_frame->offs_v; - - s_frame->dma_offset.cr_h = s_frame->offs_h; - s_frame->dma_offset.cr_v = s_frame->offs_v; - - if (!variant->pix_hoff && s_frame->fmt->planes_cnt == 3) { - s_frame->dma_offset.cb_h >>= 1; - s_frame->dma_offset.cb_v >>= 1; - s_frame->dma_offset.cr_h >>= 1; - s_frame->dma_offset.cr_v >>= 1; - } - - dbg("in offset: color= %d, y_h= %d, y_v= %d", - s_frame->fmt->color, s_frame->dma_offset.y_h, - s_frame->dma_offset.y_v); - - fimc_set_yuv_order(ctx); - - /* Check against the scaler ratio. */ if (s_frame->height > (SCALER_MAX_VRATIO * d_frame->height) || s_frame->width > (SCALER_MAX_HRATIO * d_frame->width)) { err("out of scaler range"); return -EINVAL; } + fimc_set_yuv_order(ctx); } /* Input DMA mode is not allowed when the scaler is disabled. */ @@ -1495,6 +1480,7 @@ static struct samsung_fimc_variant fimc2_variant_s5p = { }; static struct samsung_fimc_variant fimc01_variant_s5pv210 = { + .pix_hoff = 1, .has_inp_rot = 1, .has_out_rot = 1, .min_inp_pixsize = 16, @@ -1509,6 +1495,7 @@ static struct samsung_fimc_variant fimc01_variant_s5pv210 = { }; static struct samsung_fimc_variant fimc2_variant_s5pv210 = { + .pix_hoff = 1, .min_inp_pixsize = 16, .min_out_pixsize = 32, -- cgit v1.2.3 From a08c7c68f702e2a2797a4035b6c0a756c4886c26 Mon Sep 17 00:00:00 2001 From: Brian Rogers Date: Wed, 22 Sep 2010 08:06:43 -0300 Subject: V4L/DVB: ir-core: Fix null dereferences in the protocols sysfs interface For some cards, ir_dev->props and ir_dev->raw are both NULL. These cards are using built-in IR decoding instead of raw, and can't easily be made to switch protocols. So upon reading /sys/class/rc/rc?/protocols on such a card, return 'builtin' as the supported and enabled protocol. Return -EINVAL on any attempts to change the protocol. And most important of all, don't crash. Signed-off-by: Brian Rogers Acked-by: Jarod Wilson Signed-off-by: Mauro Carvalho Chehab --- drivers/media/IR/ir-sysfs.c | 17 +++++++++++------ 1 file changed, 11 insertions(+), 6 deletions(-) diff --git a/drivers/media/IR/ir-sysfs.c b/drivers/media/IR/ir-sysfs.c index 96dafc425c8..46d42467f9b 100644 --- a/drivers/media/IR/ir-sysfs.c +++ b/drivers/media/IR/ir-sysfs.c @@ -67,13 +67,14 @@ static ssize_t show_protocols(struct device *d, char *tmp = buf; int i; - if (ir_dev->props->driver_type == RC_DRIVER_SCANCODE) { + if (ir_dev->props && ir_dev->props->driver_type == RC_DRIVER_SCANCODE) { enabled = ir_dev->rc_tab.ir_type; allowed = ir_dev->props->allowed_protos; - } else { + } else if (ir_dev->raw) { enabled = ir_dev->raw->enabled_protocols; allowed = ir_raw_get_allowed_protocols(); - } + } else + return sprintf(tmp, "[builtin]\n"); IR_dprintk(1, "allowed - 0x%llx, enabled - 0x%llx\n", (long long)allowed, @@ -121,10 +122,14 @@ static ssize_t store_protocols(struct device *d, int rc, i, count = 0; unsigned long flags; - if (ir_dev->props->driver_type == RC_DRIVER_SCANCODE) + if (ir_dev->props && ir_dev->props->driver_type == RC_DRIVER_SCANCODE) type = ir_dev->rc_tab.ir_type; - else + else if (ir_dev->raw) type = ir_dev->raw->enabled_protocols; + else { + IR_dprintk(1, "Protocol switching not supported\n"); + return -EINVAL; + } while ((tmp = strsep((char **) &data, " \n")) != NULL) { if (!*tmp) @@ -185,7 +190,7 @@ static ssize_t store_protocols(struct device *d, } } - if (ir_dev->props->driver_type == RC_DRIVER_SCANCODE) { + if (ir_dev->props && ir_dev->props->driver_type == RC_DRIVER_SCANCODE) { spin_lock_irqsave(&ir_dev->rc_tab.lock, flags); ir_dev->rc_tab.ir_type = type; spin_unlock_irqrestore(&ir_dev->rc_tab.lock, flags); -- cgit v1.2.3 From b2b476f53a9d24b00a313adf7f6ca92515a2af54 Mon Sep 17 00:00:00 2001 From: Pawel Osciak Date: Tue, 20 Jul 2010 13:49:16 -0300 Subject: V4L/DVB: v4l: videobuf: prevent passing a NULL to dma_free_coherent() When a driver that uses videobuf-dma-contig is used with the USERPTR memory access method a kernel oops might happen: a NULL address may be passed to dma_free_coherent(). This happens when an application calls REQBUFS and then exits without queuing any buffers. This patch fixes that bug. Signed-off-by: Pawel Osciak Signed-off-by: Kyungmin Park Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/videobuf-dma-contig.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/media/video/videobuf-dma-contig.c b/drivers/media/video/videobuf-dma-contig.c index 372b87efcd0..6ff9e4bac3e 100644 --- a/drivers/media/video/videobuf-dma-contig.c +++ b/drivers/media/video/videobuf-dma-contig.c @@ -393,8 +393,10 @@ void videobuf_dma_contig_free(struct videobuf_queue *q, } /* read() method */ - dma_free_coherent(q->dev, mem->size, mem->vaddr, mem->dma_handle); - mem->vaddr = NULL; + if (mem->vaddr) { + dma_free_coherent(q->dev, mem->size, mem->vaddr, mem->dma_handle); + mem->vaddr = NULL; + } } EXPORT_SYMBOL_GPL(videobuf_dma_contig_free); -- cgit v1.2.3 From cc6e853c5e49ea3698e87415672d818c6d7a5ee9 Mon Sep 17 00:00:00 2001 From: Marek Szyprowski Date: Sun, 5 Sep 2010 02:42:33 -0300 Subject: V4L/DVB: v4l: radio: si470x: fix unneeded free_irq() call In case of error during probe() the driver calls free_irq() function on not yet allocated irq. This patches fixes the call sequence in case of the error. Signed-off-by: Marek Szyprowski Signed-off-by: Kyungmin Park Signed-off-by: Mauro Carvalho Chehab --- drivers/media/radio/si470x/radio-si470x-i2c.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/media/radio/si470x/radio-si470x-i2c.c b/drivers/media/radio/si470x/radio-si470x-i2c.c index 67a4ec8768a..4ce541a5eb4 100644 --- a/drivers/media/radio/si470x/radio-si470x-i2c.c +++ b/drivers/media/radio/si470x/radio-si470x-i2c.c @@ -395,7 +395,7 @@ static int __devinit si470x_i2c_probe(struct i2c_client *client, radio->registers[POWERCFG] = POWERCFG_ENABLE; if (si470x_set_register(radio, POWERCFG) < 0) { retval = -EIO; - goto err_all; + goto err_video; } msleep(110); -- cgit v1.2.3 From 59bfee6e0682635c269fb271422e2595fa441c21 Mon Sep 17 00:00:00 2001 From: Wolfram Sang Date: Thu, 30 Sep 2010 14:14:22 +0200 Subject: i2c: Remove obsolete cleanup for clientdata A few new i2c-drivers came into the kernel which clear the clientdata-pointer on exit. This is obsolete meanwhile, so fix it and hope the word will spread. Signed-off-by: Wolfram Sang Acked-by: Mark Brown Signed-off-by: Jean Delvare --- drivers/misc/bh1780gli.c | 1 - drivers/regulator/ad5398.c | 1 - drivers/regulator/isl6271a-regulator.c | 2 -- drivers/rtc/rtc-ds3232.c | 2 -- 4 files changed, 6 deletions(-) diff --git a/drivers/misc/bh1780gli.c b/drivers/misc/bh1780gli.c index 714c6b48731..d5f3a3fd231 100644 --- a/drivers/misc/bh1780gli.c +++ b/drivers/misc/bh1780gli.c @@ -190,7 +190,6 @@ static int __devexit bh1780_remove(struct i2c_client *client) ddata = i2c_get_clientdata(client); sysfs_remove_group(&client->dev.kobj, &bh1780_attr_group); - i2c_set_clientdata(client, NULL); kfree(ddata); return 0; diff --git a/drivers/regulator/ad5398.c b/drivers/regulator/ad5398.c index df1fb53c09d..a4be41614ee 100644 --- a/drivers/regulator/ad5398.c +++ b/drivers/regulator/ad5398.c @@ -256,7 +256,6 @@ static int __devexit ad5398_remove(struct i2c_client *client) regulator_unregister(chip->rdev); kfree(chip); - i2c_set_clientdata(client, NULL); return 0; } diff --git a/drivers/regulator/isl6271a-regulator.c b/drivers/regulator/isl6271a-regulator.c index d61ecb885a8..b8cc6389a54 100644 --- a/drivers/regulator/isl6271a-regulator.c +++ b/drivers/regulator/isl6271a-regulator.c @@ -191,8 +191,6 @@ static int __devexit isl6271a_remove(struct i2c_client *i2c) struct isl_pmic *pmic = i2c_get_clientdata(i2c); int i; - i2c_set_clientdata(i2c, NULL); - for (i = 0; i < 3; i++) regulator_unregister(pmic->rdev[i]); diff --git a/drivers/rtc/rtc-ds3232.c b/drivers/rtc/rtc-ds3232.c index 9daed8db83d..9de8516e353 100644 --- a/drivers/rtc/rtc-ds3232.c +++ b/drivers/rtc/rtc-ds3232.c @@ -268,7 +268,6 @@ out_irq: free_irq(client->irq, client); out_free: - i2c_set_clientdata(client, NULL); kfree(ds3232); return ret; } @@ -287,7 +286,6 @@ static int __devexit ds3232_remove(struct i2c_client *client) } rtc_device_unregister(ds3232->rtc); - i2c_set_clientdata(client, NULL); kfree(ds3232); return 0; } -- cgit v1.2.3 From 753419f59e10d7181e43f0b9cc5beff43ef3f7a4 Mon Sep 17 00:00:00 2001 From: Vishwanath BS Date: Thu, 30 Sep 2010 14:14:22 +0200 Subject: i2c: Fix for suspend/resume issue In current i2c core driver, call to pm_runtime_set_active from i2c_device_pm_resume will unconditionally enable i2c module and increment child count of the parent. Because of this, in CPU Idle path, i2c does not idle, preventing Core to enter retention. Also i2c module will not be suspended upon system suspend as pm_runtime_set_suspended is not called from i2c_device_pm_suspend. This issue is fixed by removing pm_runtime_set_active call from resume path which is not necessary. This fix has been tested on OMAP4430. Signed-off-by: Partha Basak Signed-off-by: Vishwanath BS Acked-by: Rafael J. Wysocki Cc: Kevin Hilman Cc: Ben Dooks Signed-off-by: Jean Delvare --- drivers/i2c/i2c-core.c | 6 ------ 1 file changed, 6 deletions(-) diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c index 6649176de94..13927d54cb4 100644 --- a/drivers/i2c/i2c-core.c +++ b/drivers/i2c/i2c-core.c @@ -216,12 +216,6 @@ static int i2c_device_pm_resume(struct device *dev) else ret = i2c_legacy_resume(dev); - if (!ret) { - pm_runtime_disable(dev); - pm_runtime_set_active(dev); - pm_runtime_enable(dev); - } - return ret; } -- cgit v1.2.3 From 6abb930af064fb1cf4177d32e2c7bfb89eee0fe5 Mon Sep 17 00:00:00 2001 From: Yegor Yefremov Date: Thu, 30 Sep 2010 14:14:22 +0200 Subject: i2c-pca: Fix waitforcompletion() return value ret is still -1, if during the polling read_byte() returns at once with I2C_PCA_CON_SI set. So ret > 0 would lead *_waitforcompletion() to return 0, in spite of the proper behavior. The routine was rewritten, so that ret has always a proper value, before returning. Signed-off-by: Yegor Yefremov Reviewed-by: Wolfram Sang Cc: stable@kernel.org Signed-off-by: Jean Delvare --- drivers/i2c/busses/i2c-pca-isa.c | 12 ++++++++---- drivers/i2c/busses/i2c-pca-platform.c | 11 +++++++---- 2 files changed, 15 insertions(+), 8 deletions(-) diff --git a/drivers/i2c/busses/i2c-pca-isa.c b/drivers/i2c/busses/i2c-pca-isa.c index bbd77603a41..29933f87d8f 100644 --- a/drivers/i2c/busses/i2c-pca-isa.c +++ b/drivers/i2c/busses/i2c-pca-isa.c @@ -71,8 +71,8 @@ static int pca_isa_readbyte(void *pd, int reg) static int pca_isa_waitforcompletion(void *pd) { - long ret = ~0; unsigned long timeout; + long ret; if (irq > -1) { ret = wait_event_timeout(pca_wait, @@ -81,11 +81,15 @@ static int pca_isa_waitforcompletion(void *pd) } else { /* Do polling */ timeout = jiffies + pca_isa_ops.timeout; - while (((pca_isa_readbyte(pd, I2C_PCA_CON) - & I2C_PCA_CON_SI) == 0) - && (ret = time_before(jiffies, timeout))) + do { + ret = time_before(jiffies, timeout); + if (pca_isa_readbyte(pd, I2C_PCA_CON) + & I2C_PCA_CON_SI) + break; udelay(100); + } while (ret); } + return ret > 0; } diff --git a/drivers/i2c/busses/i2c-pca-platform.c b/drivers/i2c/busses/i2c-pca-platform.c index ef5c78487eb..5f6d7f89e22 100644 --- a/drivers/i2c/busses/i2c-pca-platform.c +++ b/drivers/i2c/busses/i2c-pca-platform.c @@ -80,8 +80,8 @@ static void i2c_pca_pf_writebyte32(void *pd, int reg, int val) static int i2c_pca_pf_waitforcompletion(void *pd) { struct i2c_pca_pf_data *i2c = pd; - long ret = ~0; unsigned long timeout; + long ret; if (i2c->irq) { ret = wait_event_timeout(i2c->wait, @@ -90,10 +90,13 @@ static int i2c_pca_pf_waitforcompletion(void *pd) } else { /* Do polling */ timeout = jiffies + i2c->adap.timeout; - while (((i2c->algo_data.read_byte(i2c, I2C_PCA_CON) - & I2C_PCA_CON_SI) == 0) - && (ret = time_before(jiffies, timeout))) + do { + ret = time_before(jiffies, timeout); + if (i2c->algo_data.read_byte(i2c, I2C_PCA_CON) + & I2C_PCA_CON_SI) + break; udelay(100); + } while (ret); } return ret > 0; -- cgit v1.2.3 From 64b4782fc9e4bdc59ae90897e2258e4ec938690e Mon Sep 17 00:00:00 2001 From: Rajendra Nayak Date: Thu, 30 Sep 2010 14:14:22 +0200 Subject: i2c: Fix checks which cause legacy suspend to never get called For devices which are not adapted to runtime PM a call to pm_runtime_suspended always returns true. Hence the pm_runtime_suspended checks below prevent legacy suspend from getting called. So do a pm_runtime_suspended check only for devices with a dev_pm_ops populated (which hence do not rely on the legacy suspend.) Signed-off-by: Rajendra Nayak Acked-by: Rafael J. Wysocki Cc: Ben Dooks Cc: Mark Brown Cc: Kevin Hilman Signed-off-by: Jean Delvare --- drivers/i2c/i2c-core.c | 44 ++++++++++++++++++++++++-------------------- 1 file changed, 24 insertions(+), 20 deletions(-) diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c index 13927d54cb4..9b3cac13a4a 100644 --- a/drivers/i2c/i2c-core.c +++ b/drivers/i2c/i2c-core.c @@ -197,11 +197,12 @@ static int i2c_device_pm_suspend(struct device *dev) { const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL; - if (pm_runtime_suspended(dev)) - return 0; - - if (pm) - return pm->suspend ? pm->suspend(dev) : 0; + if (pm) { + if (pm_runtime_suspended(dev)) + return 0; + else + return pm->suspend ? pm->suspend(dev) : 0; + } return i2c_legacy_suspend(dev, PMSG_SUSPEND); } @@ -223,11 +224,12 @@ static int i2c_device_pm_freeze(struct device *dev) { const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL; - if (pm_runtime_suspended(dev)) - return 0; - - if (pm) - return pm->freeze ? pm->freeze(dev) : 0; + if (pm) { + if (pm_runtime_suspended(dev)) + return 0; + else + return pm->freeze ? pm->freeze(dev) : 0; + } return i2c_legacy_suspend(dev, PMSG_FREEZE); } @@ -236,11 +238,12 @@ static int i2c_device_pm_thaw(struct device *dev) { const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL; - if (pm_runtime_suspended(dev)) - return 0; - - if (pm) - return pm->thaw ? pm->thaw(dev) : 0; + if (pm) { + if (pm_runtime_suspended(dev)) + return 0; + else + return pm->thaw ? pm->thaw(dev) : 0; + } return i2c_legacy_resume(dev); } @@ -249,11 +252,12 @@ static int i2c_device_pm_poweroff(struct device *dev) { const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL; - if (pm_runtime_suspended(dev)) - return 0; - - if (pm) - return pm->poweroff ? pm->poweroff(dev) : 0; + if (pm) { + if (pm_runtime_suspended(dev)) + return 0; + else + return pm->poweroff ? pm->poweroff(dev) : 0; + } return i2c_legacy_suspend(dev, PMSG_HIBERNATE); } -- cgit v1.2.3 From 925bb9c649cf8d7200549b395f2ae291833dd494 Mon Sep 17 00:00:00 2001 From: Grant Likely Date: Thu, 30 Sep 2010 14:14:23 +0200 Subject: of/i2c: Fix module load order issue caused by of_i2c.c Commit 959e85f7, "i2c: add OF-style registration and binding" caused a module dependency loop where of_i2c.c calls functions in i2c-core, and i2c-core calls of_i2c_register_devices() in of_i2c. This means that when i2c support is built as a module when CONFIG_OF is set, then neither i2c_core nor of_i2c are able to be loaded. This patch fixes the problem by moving the of_i2c_register_devices() calls back into the device drivers. Device drivers already specifically request the core code to parse the device tree for devices anyway by setting the of_node pointer, so it isn't a big deal to also call the registration function. The drivers just become slightly more verbose. Signed-off-by: Grant Likely Signed-off-by: Jean Delvare --- drivers/i2c/busses/i2c-cpm.c | 5 +++++ drivers/i2c/busses/i2c-ibm_iic.c | 3 +++ drivers/i2c/busses/i2c-mpc.c | 1 + drivers/i2c/i2c-core.c | 4 ---- 4 files changed, 9 insertions(+), 4 deletions(-) diff --git a/drivers/i2c/busses/i2c-cpm.c b/drivers/i2c/busses/i2c-cpm.c index f7bd2613cec..f2de3be35df 100644 --- a/drivers/i2c/busses/i2c-cpm.c +++ b/drivers/i2c/busses/i2c-cpm.c @@ -677,6 +677,11 @@ static int __devinit cpm_i2c_probe(struct platform_device *ofdev, dev_dbg(&ofdev->dev, "hw routines for %s registered.\n", cpm->adap.name); + /* + * register OF I2C devices + */ + of_i2c_register_devices(&cpm->adap); + return 0; out_shut: cpm_i2c_shutdown(cpm); diff --git a/drivers/i2c/busses/i2c-ibm_iic.c b/drivers/i2c/busses/i2c-ibm_iic.c index 43ca32fddde..89eedf45d30 100644 --- a/drivers/i2c/busses/i2c-ibm_iic.c +++ b/drivers/i2c/busses/i2c-ibm_iic.c @@ -761,6 +761,9 @@ static int __devinit iic_probe(struct platform_device *ofdev, dev_info(&ofdev->dev, "using %s mode\n", dev->fast_mode ? "fast (400 kHz)" : "standard (100 kHz)"); + /* Now register all the child nodes */ + of_i2c_register_devices(adap); + return 0; error_cleanup: diff --git a/drivers/i2c/busses/i2c-mpc.c b/drivers/i2c/busses/i2c-mpc.c index a1c419a716a..b74e6dc6886 100644 --- a/drivers/i2c/busses/i2c-mpc.c +++ b/drivers/i2c/busses/i2c-mpc.c @@ -632,6 +632,7 @@ static int __devinit fsl_i2c_probe(struct platform_device *op, dev_err(i2c->dev, "failed to add adapter\n"); goto fail_add; } + of_i2c_register_devices(&i2c->adap); return result; diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c index 9b3cac13a4a..bea4c5021d2 100644 --- a/drivers/i2c/i2c-core.c +++ b/drivers/i2c/i2c-core.c @@ -32,7 +32,6 @@ #include #include #include -#include #include #include #include @@ -874,9 +873,6 @@ static int i2c_register_adapter(struct i2c_adapter *adap) if (adap->nr < __i2c_first_dynamic_bus_num) i2c_scan_static_board_info(adap); - /* Register devices from the device tree */ - of_i2c_register_devices(adap); - /* Notify drivers */ mutex_lock(&core_lock); bus_for_each_drv(&i2c_bus_type, NULL, adap, __process_new_adapter); -- cgit v1.2.3 From c1e0ddbf0a97e1704d7f13b4934f9acca002402d Mon Sep 17 00:00:00 2001 From: Yinghai Lu Date: Fri, 17 Sep 2010 23:26:24 -0700 Subject: ACPI: Handle ACPI0007 Device in acpi_early_set_pdc After | commit d8191fa4a33fdc817277da4f2b7f771ff605a41c | Author: Alex Chiang | Date: Mon Feb 22 12:11:39 2010 -0700 | | ACPI: processor: driver doesn't need to evaluate _PDC | | Now that the early _PDC evaluation path knows how to correctly | evaluate _PDC on only physically present processors, there's no | need for the processor driver to evaluate it later when it loads. | | To cover the hotplug case, push _PDC evaluation down into the | hotplug paths. only cpu with Processor Statement get processed with _PDC If bios is using Device object instead of Processor statement. SSDTs for Pstate/Cstate/Tstate can not be loaded dynamically. Need to try to scan ACPI0007 in addition to Processor. That commit is between 2.6.34-rc1 and 2.6.34-rc2, so stable tree for 2.6.34+ need this patch. Signed-off-by: Yinghai Lu Reviewed-by: Bjorn Helgaas Signed-off-by: Len Brown --- drivers/acpi/processor_core.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c index e9699aaed10..df6e1676a6f 100644 --- a/drivers/acpi/processor_core.c +++ b/drivers/acpi/processor_core.c @@ -352,4 +352,5 @@ void __init acpi_early_processor_set_pdc(void) acpi_walk_namespace(ACPI_TYPE_PROCESSOR, ACPI_ROOT_OBJECT, ACPI_UINT32_MAX, early_init_pdc, NULL, NULL, NULL); + acpi_get_devices("ACPI0007", early_init_pdc, NULL, NULL); } -- cgit v1.2.3 From 3deb11ef16632fb76daead0db281f6f7d19332f2 Mon Sep 17 00:00:00 2001 From: "Lee, Chun-Yi" Date: Fri, 1 Oct 2010 16:28:29 +0800 Subject: ACPI: add DMI to disable AML Vista compatibility on MSI GX723 Notebook The brightness control hotkey don't work with Vista compatibility because the MSI GX723 includes an infinite while loop in DSDT when brightness control hotkey pressed. The MSI GX723 uses Nvidia video. Perhaps the loop is specific to the Nvidia Vista driver... This patch should be reverted once nouveau grows support to call the ACPI NVIF method. Signed-off-by: Lee, Chun-Yi Signed-off-by: Len Brown --- drivers/acpi/blacklist.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/drivers/acpi/blacklist.c b/drivers/acpi/blacklist.c index 2bb28b9d91c..47cb4cb1f37 100644 --- a/drivers/acpi/blacklist.c +++ b/drivers/acpi/blacklist.c @@ -202,6 +202,23 @@ static struct dmi_system_id acpi_osi_dmi_table[] __initdata = { }, }, { + /* + * There have a NVIF method in MSI GX723 DSDT need call by Nvidia + * driver (e.g. nouveau) when user press brightness hotkey. + * Currently, nouveau driver didn't do the job and it causes there + * have a infinite while loop in DSDT when user press hotkey. + * We add MSI GX723's dmi information to this table for workaround + * this issue. + * Will remove MSI GX723 from the table after nouveau grows support. + */ + .callback = dmi_disable_osi_vista, + .ident = "MSI GX723", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Micro-Star International"), + DMI_MATCH(DMI_PRODUCT_NAME, "GX723"), + }, + }, + { .callback = dmi_disable_osi_vista, .ident = "Sony VGN-NS10J_S", .matches = { -- cgit v1.2.3 From ff5ff6060bf880aac233e68dd666cbe9e39ec620 Mon Sep 17 00:00:00 2001 From: Arnaud Lacombe Date: Sun, 26 Sep 2010 16:22:03 -0400 Subject: kconfig: delay symbol direct dependency initialization This fixes the use-after-free and associated crash in kconfig introduced in commit 246cf9c26bf11f2bffbecea6e5bd222eee7b1df8. Signed-off-by: Arnaud Lacombe Acked-by: Catalin Marinas Signed-off-by: Michal Marek --- scripts/kconfig/expr.h | 1 - scripts/kconfig/menu.c | 7 ++----- 2 files changed, 2 insertions(+), 6 deletions(-) diff --git a/scripts/kconfig/expr.h b/scripts/kconfig/expr.h index 6ee2e4fb148..170459c224a 100644 --- a/scripts/kconfig/expr.h +++ b/scripts/kconfig/expr.h @@ -165,7 +165,6 @@ struct menu { struct symbol *sym; struct property *prompt; struct expr *dep; - struct expr *dir_dep; unsigned int flags; char *help; struct file *file; diff --git a/scripts/kconfig/menu.c b/scripts/kconfig/menu.c index 4fb590247f3..edda8b49619 100644 --- a/scripts/kconfig/menu.c +++ b/scripts/kconfig/menu.c @@ -107,7 +107,6 @@ static struct expr *menu_check_dep(struct expr *e) void menu_add_dep(struct expr *dep) { current_entry->dep = expr_alloc_and(current_entry->dep, menu_check_dep(dep)); - current_entry->dir_dep = current_entry->dep; } void menu_set_type(int type) @@ -291,10 +290,6 @@ void menu_finalize(struct menu *parent) for (menu = parent->list; menu; menu = menu->next) menu_finalize(menu); } else if (sym) { - /* ignore inherited dependencies for dir_dep */ - sym->dir_dep.expr = expr_transform(expr_copy(parent->dir_dep)); - sym->dir_dep.expr = expr_eliminate_dups(sym->dir_dep.expr); - basedep = parent->prompt ? parent->prompt->visible.expr : NULL; basedep = expr_trans_compare(basedep, E_UNEQUAL, &symbol_no); basedep = expr_eliminate_dups(expr_transform(basedep)); @@ -325,6 +320,8 @@ void menu_finalize(struct menu *parent) parent->next = last_menu->next; last_menu->next = NULL; } + + sym->dir_dep.expr = parent->dep; } for (menu = parent->list; menu; menu = menu->next) { if (sym && sym_is_choice(sym) && -- cgit v1.2.3 From 475d92fc6e72cd123dc5dbb9e70cdb80b0cfdf2d Mon Sep 17 00:00:00 2001 From: Will Deacon Date: Tue, 28 Sep 2010 14:02:02 +0100 Subject: ARM: 6416/1: errata: faulty hazard checking in the Store Buffer may lead to data corruption On the r2p0, r2p1 and r2p2 versions of the Cortex-A9, data corruption can occur under very rare conditions due to a store buffer optimisation. This workaround sets a bit in the diagnostic register of the Cortex-A9, disabling the optimisation and preventing the problem from occurring. Acked-by: Catalin Marinas Signed-off-by: Will Deacon Signed-off-by: Russell King --- arch/arm/Kconfig | 14 ++++++++++++++ arch/arm/mm/proc-v7.S | 8 ++++++++ 2 files changed, 22 insertions(+) diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 88c97bc7a6f..9c26ba7244f 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -1101,6 +1101,20 @@ config ARM_ERRATA_720789 invalidated are not, resulting in an incoherency in the system page tables. The workaround changes the TLB flushing routines to invalidate entries regardless of the ASID. + +config ARM_ERRATA_743622 + bool "ARM errata: Faulty hazard checking in the Store Buffer may lead to data corruption" + depends on CPU_V7 + help + This option enables the workaround for the 743622 Cortex-A9 + (r2p0..r2p2) erratum. Under very rare conditions, a faulty + optimisation in the Cortex-A9 Store Buffer may lead to data + corruption. This workaround sets a specific bit in the diagnostic + register of the Cortex-A9 which disables the Store Buffer + optimisation, preventing the defect from occurring. This has no + visible impact on the overall performance or power consumption of the + processor. + endmenu source "arch/arm/common/Kconfig" diff --git a/arch/arm/mm/proc-v7.S b/arch/arm/mm/proc-v7.S index 7563ff0141b..75619c55f13 100644 --- a/arch/arm/mm/proc-v7.S +++ b/arch/arm/mm/proc-v7.S @@ -253,6 +253,14 @@ __v7_setup: orreq r10, r10, #1 << 22 @ set bit #22 mcreq p15, 0, r10, c15, c0, 1 @ write diagnostic register #endif +#ifdef CONFIG_ARM_ERRATA_743622 + teq r6, #0x20 @ present in r2p0 + teqne r6, #0x21 @ present in r2p1 + teqne r6, #0x22 @ present in r2p2 + mrceq p15, 0, r10, c15, c0, 1 @ read diagnostic register + orreq r10, r10, #1 << 6 @ set bit #6 + mcreq p15, 0, r10, c15, c0, 1 @ write diagnostic register +#endif 3: mov r10, #0 #ifdef HARVARD_CACHE -- cgit v1.2.3 From 7f58217bb6d39edac68ae0988cdb96a520ad916f Mon Sep 17 00:00:00 2001 From: Santosh Shilimkar Date: Thu, 30 Sep 2010 09:02:17 +0100 Subject: ARM: 6419/1: mmu: Fix MT_MEMORY and MT_MEMORY_NONCACHED pte flags The commit f1a2481c0 sets up the default flags for MT_MEMORY and MT_MEMORY_NONCACHED memory types. L_PTE_USER flag is wrongly set as default for these entries so remove it. Also adding the 'L_PTE_WRITE' flag so that these pages become read-write instead of just being read-only [this stops them being exposed to userspace, which is the main concern here --rmk] Reported-by: Catalin Marinas Signed-off-by: Santosh Shilimkar Acked-by: Catalin Marinas Signed-off-by: Russell King --- arch/arm/mm/mmu.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c index 6a3a2d0cd6d..e8ed9dc461f 100644 --- a/arch/arm/mm/mmu.c +++ b/arch/arm/mm/mmu.c @@ -248,7 +248,7 @@ static struct mem_type mem_types[] = { }, [MT_MEMORY] = { .prot_pte = L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_DIRTY | - L_PTE_USER | L_PTE_EXEC, + L_PTE_WRITE | L_PTE_EXEC, .prot_l1 = PMD_TYPE_TABLE, .prot_sect = PMD_TYPE_SECT | PMD_SECT_AP_WRITE, .domain = DOMAIN_KERNEL, @@ -259,7 +259,7 @@ static struct mem_type mem_types[] = { }, [MT_MEMORY_NONCACHED] = { .prot_pte = L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_DIRTY | - L_PTE_USER | L_PTE_EXEC | L_PTE_MT_BUFFERABLE, + L_PTE_WRITE | L_PTE_EXEC | L_PTE_MT_BUFFERABLE, .prot_l1 = PMD_TYPE_TABLE, .prot_sect = PMD_TYPE_SECT | PMD_SECT_AP_WRITE, .domain = DOMAIN_KERNEL, -- cgit v1.2.3 From ccdf2e1bca8a45eaf89eb142dbed3551886413fe Mon Sep 17 00:00:00 2001 From: Will Deacon Date: Mon, 27 Sep 2010 18:12:12 +0100 Subject: ARM: 6412/1: kprobes-decode: add support for MOVW instruction The MOVW instruction moves a 16-bit immediate into the bottom halfword of the destination register. This patch ensures that kprobes leaves the 16-bit immediate intact, rather than assume a 12-bit immediate and mask out the upper 4 bits. Acked-by: Nicolas Pitre Signed-off-by: Will Deacon Signed-off-by: Russell King --- arch/arm/kernel/kprobes-decode.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/arch/arm/kernel/kprobes-decode.c b/arch/arm/kernel/kprobes-decode.c index 8bccbfa693f..2c1f0050c9c 100644 --- a/arch/arm/kernel/kprobes-decode.c +++ b/arch/arm/kernel/kprobes-decode.c @@ -1162,11 +1162,12 @@ space_cccc_001x(kprobe_opcode_t insn, struct arch_specific_insn *asi) { /* * MSR : cccc 0011 0x10 xxxx xxxx xxxx xxxx xxxx - * Undef : cccc 0011 0x00 xxxx xxxx xxxx xxxx xxxx + * Undef : cccc 0011 0100 xxxx xxxx xxxx xxxx xxxx * ALU op with S bit and Rd == 15 : * cccc 001x xxx1 xxxx 1111 xxxx xxxx xxxx */ - if ((insn & 0x0f900000) == 0x03200000 || /* MSR & Undef */ + if ((insn & 0x0fb00000) == 0x03200000 || /* MSR */ + (insn & 0x0ff00000) == 0x03400000 || /* Undef */ (insn & 0x0e10f000) == 0x0210f000) /* ALU s-bit, R15 */ return INSN_REJECTED; @@ -1177,7 +1178,7 @@ space_cccc_001x(kprobe_opcode_t insn, struct arch_specific_insn *asi) * *S (bit 20) updates condition codes * ADC/SBC/RSC reads the C flag */ - insn &= 0xfff00fff; /* Rn = r0, Rd = r0 */ + insn &= 0xffff0fff; /* Rd = r0 */ asi->insn[0] = insn; asi->insn_handler = (insn & (1 << 20)) ? /* S-bit */ emulate_alu_imm_rwflags : emulate_alu_imm_rflags; -- cgit v1.2.3 From f6cd378372bff06093d72f978c0150eeed3ea201 Mon Sep 17 00:00:00 2001 From: Dmitry Torokhov Date: Mon, 4 Oct 2010 21:46:11 -0700 Subject: Input: wacom - fix runtime PM related deadlock When runtime PM is enabled by default for input devices, X hangs in wacom open: [] mutex_lock+0x1a/0x40 [] wacom_resume+0x3b/0x90 [wacom] [] usb_resume_interface+0xd2/0x190 [] usb_resume_both+0x6d/0x110 [] usb_runtime_resume+0x24/0x40 [] __pm_runtime_resume+0x26f/0x450 [] __pm_runtime_resume+0x1da/0x450 [] pm_runtime_resume+0x2a/0x50 [] usb_autopm_get_interface+0x26/0x60 [] wacom_open+0x36/0x90 [wacom] wacom_open() takes wacom->lock and calls usb_autopm_get_interface(), which in turn calls wacom_resume() which tries to acquire the lock again. The fix is to call usb_autopm_get_interface() first, before we take the lock. Since we do not do usb_autopm_put_interface() until wacom_close() is called runtime PM is effectively disabled for the driver, however changing it now would risk regressions so the complete fix will have to wait till the next merge window. Reported-by: Jiri Slaby Acked-by: Oliver Neukum Signed-off-by: Dmitry Torokhov --- drivers/input/tablet/wacom_sys.c | 23 ++++++++++++----------- 1 file changed, 12 insertions(+), 11 deletions(-) diff --git a/drivers/input/tablet/wacom_sys.c b/drivers/input/tablet/wacom_sys.c index 42ba3691d90..b35876ee690 100644 --- a/drivers/input/tablet/wacom_sys.c +++ b/drivers/input/tablet/wacom_sys.c @@ -103,27 +103,26 @@ static void wacom_sys_irq(struct urb *urb) static int wacom_open(struct input_dev *dev) { struct wacom *wacom = input_get_drvdata(dev); + int retval = 0; - mutex_lock(&wacom->lock); - - wacom->irq->dev = wacom->usbdev; - - if (usb_autopm_get_interface(wacom->intf) < 0) { - mutex_unlock(&wacom->lock); + if (usb_autopm_get_interface(wacom->intf) < 0) return -EIO; - } + + mutex_lock(&wacom->lock); if (usb_submit_urb(wacom->irq, GFP_KERNEL)) { - usb_autopm_put_interface(wacom->intf); - mutex_unlock(&wacom->lock); - return -EIO; + retval = -EIO; + goto out; } wacom->open = true; wacom->intf->needs_remote_wakeup = 1; +out: mutex_unlock(&wacom->lock); - return 0; + if (retval) + usb_autopm_put_interface(wacom->intf); + return retval; } static void wacom_close(struct input_dev *dev) @@ -135,6 +134,8 @@ static void wacom_close(struct input_dev *dev) wacom->open = false; wacom->intf->needs_remote_wakeup = 0; mutex_unlock(&wacom->lock); + + usb_autopm_put_interface(wacom->intf); } static int wacom_parse_hid(struct usb_interface *intf, struct hid_descriptor *hid_desc, -- cgit v1.2.3 From cdaf9a2f280b25dd2fb1e04da5d3899411766e1b Mon Sep 17 00:00:00 2001 From: Russell King Date: Tue, 5 Oct 2010 11:29:28 +0100 Subject: ARM: fix section mismatch warnings in Versatile Express WARNING: vmlinux.o(.text+0xbf30): Section mismatch in reference from the function v2m_timer_init() to the function .init.text:sp804_clocksource_init() The function v2m_timer_init() references the function __init sp804_clocksource_init(). This is often because v2m_timer_init lacks a __init annotation or the annotation of sp804_clocksource_init is wrong. WARNING: vmlinux.o(.text+0xbf3c): Section mismatch in reference from the function v2m_timer_init() to the function .init.text:sp804_clockevents_init() The function v2m_timer_init() references the function __init sp804_clockevents_init(). This is often because v2m_timer_init lacks a __init annotation or the annotation of sp804_clockevents_init is wrong. WARNING: vmlinux.o(.text+0xc524): Section mismatch in reference from the function ct_ca9x4_init() to the function .init.text:l2x0_init() The function ct_ca9x4_init() references the function __init l2x0_init(). This is often because ct_ca9x4_init lacks a __init annotation or the annotation of l2x0_init is wrong. WARNING: vmlinux.o(.text+0xc530): Section mismatch in reference from the function ct_ca9x4_init() to the function .init.text:clkdev_add_table() The function ct_ca9x4_init() references the function __init clkdev_add_table(). This is often because ct_ca9x4_init lacks a __init annotation or the annotation of clkdev_add_table is wrong. WARNING: vmlinux.o(.text+0xc578): Section mismatch in reference from the function ct_ca9x4_init() to the (unknown reference) .init.data:(unknown) The function ct_ca9x4_init() references the (unknown reference) __initdata (unknown). This is often because ct_ca9x4_init lacks a __initdata annotation or the annotation of (unknown) is wrong. Fix these by making ct_ca9x4_init() and v2m_timer_init() both __init. Signed-off-by: Russell King --- arch/arm/mach-vexpress/ct-ca9x4.c | 4 ++-- arch/arm/mach-vexpress/v2m.c | 2 +- 2 files changed, 3 insertions(+), 3 deletions(-) diff --git a/arch/arm/mach-vexpress/ct-ca9x4.c b/arch/arm/mach-vexpress/ct-ca9x4.c index efb127022d4..71fb1734952 100644 --- a/arch/arm/mach-vexpress/ct-ca9x4.c +++ b/arch/arm/mach-vexpress/ct-ca9x4.c @@ -68,7 +68,7 @@ static void __init ct_ca9x4_init_irq(void) } #if 0 -static void ct_ca9x4_timer_init(void) +static void __init ct_ca9x4_timer_init(void) { writel(0, MMIO_P2V(CT_CA9X4_TIMER0) + TIMER_CTRL); writel(0, MMIO_P2V(CT_CA9X4_TIMER1) + TIMER_CTRL); @@ -222,7 +222,7 @@ static struct platform_device pmu_device = { .resource = pmu_resources, }; -static void ct_ca9x4_init(void) +static void __init ct_ca9x4_init(void) { int i; diff --git a/arch/arm/mach-vexpress/v2m.c b/arch/arm/mach-vexpress/v2m.c index 817f0ad38a0..7eaa232180a 100644 --- a/arch/arm/mach-vexpress/v2m.c +++ b/arch/arm/mach-vexpress/v2m.c @@ -48,7 +48,7 @@ void __init v2m_map_io(struct map_desc *tile, size_t num) } -static void v2m_timer_init(void) +static void __init v2m_timer_init(void) { writel(0, MMIO_P2V(V2M_TIMER0) + TIMER_CTRL); writel(0, MMIO_P2V(V2M_TIMER1) + TIMER_CTRL); -- cgit v1.2.3 From 0fa035e52373386381fcdfbd506e32eac0c662f0 Mon Sep 17 00:00:00 2001 From: Hari Kanigeri Date: Fri, 20 Aug 2010 13:50:18 +0000 Subject: omap: iommu-load cam register before flushing the entry The flush_iotlb_page is not loading the cam register before flushing the cam entry. This causes wrong entry to be flushed out from the TLB, and if the entry happens to be a locked TLB entry it would lead to MMU faults. The fix is to load the cam register with the address to be flushed before flushing the TLB entry. Signed-off-by: Hari Kanigeri Acked-by: Hiroshi DOYU Signed-off-by: Tony Lindgren --- arch/arm/plat-omap/iommu.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/plat-omap/iommu.c b/arch/arm/plat-omap/iommu.c index a202a2ce6e3..6cd151b31bc 100644 --- a/arch/arm/plat-omap/iommu.c +++ b/arch/arm/plat-omap/iommu.c @@ -320,6 +320,7 @@ void flush_iotlb_page(struct iommu *obj, u32 da) if ((start <= da) && (da < start + bytes)) { dev_dbg(obj->dev, "%s: %08x<=%08x(%x)\n", __func__, start, da, bytes); + iotlb_load_cr(obj, &cr); iommu_write_reg(obj, 1, MMU_FLUSH_ENTRY); } } -- cgit v1.2.3 From 6230d18cc7c4c68b7a38ea73bf5910e7652e5b21 Mon Sep 17 00:00:00 2001 From: minskey guo Date: Fri, 17 Sep 2010 14:02:37 +0800 Subject: seqno mask of THM_ITV register is 16bit The mask of sequence number in THM_ITV register is 16bit width instead of 8bit. Signed-off-by: minskey guo Acked-by: Jesse Barnes Signed-off-by: Matthew Garrett --- drivers/platform/x86/intel_ips.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/platform/x86/intel_ips.c b/drivers/platform/x86/intel_ips.c index 9024480a822..fb317007e3e 100644 --- a/drivers/platform/x86/intel_ips.c +++ b/drivers/platform/x86/intel_ips.c @@ -230,7 +230,7 @@ #define THM_TC2 0xac #define THM_DTV 0xb0 #define THM_ITV 0xd8 -#define ITV_ME_SEQNO_MASK 0x000f0000 /* ME should update every ~200ms */ +#define ITV_ME_SEQNO_MASK 0x00ff0000 /* ME should update every ~200ms */ #define ITV_ME_SEQNO_SHIFT (16) #define ITV_MCH_TEMP_MASK 0x0000ff00 #define ITV_MCH_TEMP_SHIFT (8) -- cgit v1.2.3 From c21eae4f7c38db0e4693fb4cb24fb42fb83d8c15 Mon Sep 17 00:00:00 2001 From: minskey guo Date: Fri, 17 Sep 2010 14:03:01 +0800 Subject: old_cpu_power is wrongly divided by 65535 in ips_monitor() The variable old_cpu_power is used to save the value of THM_CEC register. In get_cpu_power(), it will be divided by 65535. Signed-off-by: minskey guo Acked-by: Jesse Barnes Signed-off-by: Matthew Garrett --- drivers/platform/x86/intel_ips.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/platform/x86/intel_ips.c b/drivers/platform/x86/intel_ips.c index fb317007e3e..3c7b25c3cb8 100644 --- a/drivers/platform/x86/intel_ips.c +++ b/drivers/platform/x86/intel_ips.c @@ -948,7 +948,7 @@ static int ips_monitor(void *data) ITV_ME_SEQNO_SHIFT; seqno_timestamp = get_jiffies_64(); - old_cpu_power = thm_readl(THM_CEC) / 65535; + old_cpu_power = thm_readl(THM_CEC); schedule_timeout_interruptible(msecs_to_jiffies(IPS_SAMPLE_PERIOD)); /* Collect an initial average */ -- cgit v1.2.3 From fed522f7ea780d195d5d3e55df95fee520136e17 Mon Sep 17 00:00:00 2001 From: minskey guo Date: Fri, 17 Sep 2010 14:03:15 +0800 Subject: Release symbol on error-handling path of ips_get_i915_syms() In ips_get_i915_syms(), the symbol i915_gpu_busy() is not released when error occurs. Signed-off-by: minskey guo Acked-by: Jesse Barnes Signed-off-by: Matthew Garrett --- drivers/platform/x86/intel_ips.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/platform/x86/intel_ips.c b/drivers/platform/x86/intel_ips.c index 3c7b25c3cb8..71dcc410f9d 100644 --- a/drivers/platform/x86/intel_ips.c +++ b/drivers/platform/x86/intel_ips.c @@ -1390,7 +1390,7 @@ static bool ips_get_i915_syms(struct ips_driver *ips) return true; out_put_busy: - symbol_put(i915_gpu_turbo_disable); + symbol_put(i915_gpu_busy); out_put_lower: symbol_put(i915_gpu_lower); out_put_raise: -- cgit v1.2.3 From a7abda8d721359363d679c5f2de964f29419568c Mon Sep 17 00:00:00 2001 From: minskey guo Date: Fri, 17 Sep 2010 14:03:27 +0800 Subject: NULL pointer might be used in ips_monitor() The patch is to create ips_adjust thread before ips_monitor begins to run because the latter will kthread_stop() or wake up the former via ips->adjust pointer. Without this change, it is possible that ips->adjust is NULL when kthread_stop() or wake_up_process() is called in ips_monitor(). Signed-off-by: minskey guo Acked-by: Jesse Barnes Signed-off-by: Matthew Garrett --- drivers/platform/x86/intel_ips.c | 22 +++++++++++++--------- 1 file changed, 13 insertions(+), 9 deletions(-) diff --git a/drivers/platform/x86/intel_ips.c b/drivers/platform/x86/intel_ips.c index 71dcc410f9d..bfa9c726054 100644 --- a/drivers/platform/x86/intel_ips.c +++ b/drivers/platform/x86/intel_ips.c @@ -940,7 +940,6 @@ static int ips_monitor(void *data) kfree(mch_samples); kfree(cpu_samples); kfree(mchp_samples); - kthread_stop(ips->adjust); return -ENOMEM; } @@ -1535,19 +1534,24 @@ static int ips_probe(struct pci_dev *dev, const struct pci_device_id *id) ips_enable_cpu_turbo(ips); ips->cpu_turbo_enabled = true; - /* Set up the work queue and monitor/adjust threads */ - ips->monitor = kthread_run(ips_monitor, ips, "ips-monitor"); - if (IS_ERR(ips->monitor)) { + /* Create thermal adjust thread */ + ips->adjust = kthread_create(ips_adjust, ips, "ips-adjust"); + if (IS_ERR(ips->adjust)) { dev_err(&dev->dev, - "failed to create thermal monitor thread, aborting\n"); + "failed to create thermal adjust thread, aborting\n"); ret = -ENOMEM; goto error_free_irq; + } - ips->adjust = kthread_create(ips_adjust, ips, "ips-adjust"); - if (IS_ERR(ips->adjust)) { + /* + * Set up the work queue and monitor thread. The monitor thread + * will wake up ips_adjust thread. + */ + ips->monitor = kthread_run(ips_monitor, ips, "ips-monitor"); + if (IS_ERR(ips->monitor)) { dev_err(&dev->dev, - "failed to create thermal adjust thread, aborting\n"); + "failed to create thermal monitor thread, aborting\n"); ret = -ENOMEM; goto error_thread_cleanup; } @@ -1566,7 +1570,7 @@ static int ips_probe(struct pci_dev *dev, const struct pci_device_id *id) return ret; error_thread_cleanup: - kthread_stop(ips->monitor); + kthread_stop(ips->adjust); error_free_irq: free_irq(ips->dev->irq, ips); error_unmap: -- cgit v1.2.3 From 354aeeb1ca8f82ea133ede21987034addc75057a Mon Sep 17 00:00:00 2001 From: Jesse Barnes Date: Thu, 23 Sep 2010 23:49:28 +0200 Subject: IPS driver: don't toggle CPU turbo on unsupported CPUs If the CPU doesn't support turbo, don't try to enable/disable it. http://bugzilla.kernel.org/show_bug.cgi?id=18742 Signed-off-by: Jesse Barnes Signed-off-by: Matthew Garrett --- drivers/platform/x86/intel_ips.c | 14 +++++++++----- 1 file changed, 9 insertions(+), 5 deletions(-) diff --git a/drivers/platform/x86/intel_ips.c b/drivers/platform/x86/intel_ips.c index bfa9c726054..71d04ef47b8 100644 --- a/drivers/platform/x86/intel_ips.c +++ b/drivers/platform/x86/intel_ips.c @@ -51,7 +51,6 @@ * TODO: * - handle CPU hotplug * - provide turbo enable/disable api - * - make sure we can write turbo enable/disable reg based on MISC_EN * * Related documents: * - CDI 403777, 403778 - Auburndale EDS vol 1 & 2 @@ -325,6 +324,7 @@ struct ips_driver { bool gpu_preferred; bool poll_turbo_status; bool second_cpu; + bool turbo_toggle_allowed; struct ips_mcp_limits *limits; /* Optional MCH interfaces for if i915 is in use */ @@ -461,7 +461,8 @@ static void ips_enable_cpu_turbo(struct ips_driver *ips) if (ips->__cpu_turbo_on) return; - on_each_cpu(do_enable_cpu_turbo, ips, 1); + if (ips->turbo_toggle_allowed) + on_each_cpu(do_enable_cpu_turbo, ips, 1); ips->__cpu_turbo_on = true; } @@ -498,7 +499,8 @@ static void ips_disable_cpu_turbo(struct ips_driver *ips) if (!ips->__cpu_turbo_on) return; - on_each_cpu(do_disable_cpu_turbo, ips, 1); + if (ips->turbo_toggle_allowed) + on_each_cpu(do_disable_cpu_turbo, ips, 1); ips->__cpu_turbo_on = false; } @@ -1332,8 +1334,10 @@ static struct ips_mcp_limits *ips_detect_cpu(struct ips_driver *ips) * turbo manually or we'll get an illegal MSR access, even though * turbo will still be available. */ - if (!(misc_en & IA32_MISC_TURBO_EN)) - ; /* add turbo MSR write allowed flag if necessary */ + if (misc_en & IA32_MISC_TURBO_EN) + ips->turbo_toggle_allowed = true; + else + ips->turbo_toggle_allowed = false; if (strstr(boot_cpu_data.x86_model_id, "CPU M")) limits = &ips_sv_limits; -- cgit v1.2.3 From eceab272fb895148f6293b5c0644fc2dd36d3aff Mon Sep 17 00:00:00 2001 From: Jesse Barnes Date: Thu, 23 Sep 2010 23:49:29 +0200 Subject: IPS driver: verify BIOS provided limits They're optional. If not present or sane, we should use the CPU defaults. Signed-off-by: Jesse Barnes Signed-off-by: Matthew Garrett --- drivers/platform/x86/intel_ips.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) diff --git a/drivers/platform/x86/intel_ips.c b/drivers/platform/x86/intel_ips.c index 71d04ef47b8..c402cc41710 100644 --- a/drivers/platform/x86/intel_ips.c +++ b/drivers/platform/x86/intel_ips.c @@ -664,6 +664,27 @@ static bool mch_exceeded(struct ips_driver *ips) return ret; } +/** + * verify_limits - verify BIOS provided limits + * @ips: IPS structure + * + * BIOS can optionally provide non-default limits for power and temp. Check + * them here and use the defaults if the BIOS values are not provided or + * are otherwise unusable. + */ +static void verify_limits(struct ips_driver *ips) +{ + if (ips->mcp_power_limit < ips->limits->mcp_power_limit || + ips->mcp_power_limit > 35000) + ips->mcp_power_limit = ips->limits->mcp_power_limit; + + if (ips->mcp_temp_limit < ips->limits->core_temp_limit || + ips->mcp_temp_limit < ips->limits->mch_temp_limit || + ips->mcp_temp_limit > 150) + ips->mcp_temp_limit = min(ips->limits->core_temp_limit, + ips->limits->mch_temp_limit); +} + /** * update_turbo_limits - get various limits & settings from regs * @ips: IPS driver struct @@ -688,6 +709,7 @@ static void update_turbo_limits(struct ips_driver *ips) ips->mcp_temp_limit = thm_readw(THM_PTL); ips->mcp_power_limit = thm_readw(THM_MPPC); + verify_limits(ips); /* Ignore BIOS CPU vs GPU pref */ } @@ -1156,6 +1178,7 @@ static irqreturn_t ips_irq_handler(int irq, void *arg) STS_PTL_SHIFT; ips->mcp_power_limit = (tc1 & STS_PPL_MASK) >> STS_PPL_SHIFT; + verify_limits(ips); spin_unlock(&ips->turbo_status_lock); thm_writeb(THM_SEC, SEC_ACK); -- cgit v1.2.3 From a8c096adbd2b55942ff13c8bbc573a7551768003 Mon Sep 17 00:00:00 2001 From: Tim Gardner Date: Tue, 28 Sep 2010 14:58:15 -0600 Subject: intel_ips: Print MCP limit exceeded values. Print some interesting values when MCP limits are exceeded. Signed-off-by: Tim Gardner Cc: Matthew Garrett Signed-off-by: Matthew Garrett --- drivers/platform/x86/intel_ips.c | 24 ++++++++++++++++++------ 1 file changed, 18 insertions(+), 6 deletions(-) diff --git a/drivers/platform/x86/intel_ips.c b/drivers/platform/x86/intel_ips.c index c402cc41710..07a1a4aac60 100644 --- a/drivers/platform/x86/intel_ips.c +++ b/drivers/platform/x86/intel_ips.c @@ -600,17 +600,29 @@ static bool mcp_exceeded(struct ips_driver *ips) { unsigned long flags; bool ret = false; + u32 temp_limit; + u32 avg_power; + const char *msg = "MCP limit exceeded: "; spin_lock_irqsave(&ips->turbo_status_lock, flags); - if (ips->mcp_avg_temp > (ips->mcp_temp_limit * 100)) - ret = true; - if (ips->cpu_avg_power + ips->mch_avg_power > ips->mcp_power_limit) + + temp_limit = ips->mcp_temp_limit * 100; + if (ips->mcp_avg_temp > temp_limit) { + dev_info(&ips->dev->dev, + "%sAvg temp %u, limit %u\n", msg, ips->mcp_avg_temp, + temp_limit); ret = true; - spin_unlock_irqrestore(&ips->turbo_status_lock, flags); + } - if (ret) + avg_power = ips->cpu_avg_power + ips->mch_avg_power; + if (avg_power > ips->mcp_power_limit) { dev_info(&ips->dev->dev, - "MCP power or thermal limit exceeded\n"); + "%sAvg power %u, limit %u\n", msg, avg_power, + ips->mcp_power_limit); + ret = true; + } + + spin_unlock_irqrestore(&ips->turbo_status_lock, flags); return ret; } -- cgit v1.2.3 From 070c0ee1ef9f5550cac9247190f0289349f28c01 Mon Sep 17 00:00:00 2001 From: Andy Whitcroft Date: Tue, 5 Oct 2010 09:48:42 +0100 Subject: intel_ips -- ensure we do not enable gpu turbo mode without driver linkage Both when polling the current turbo status (in poll_turbo_status mode) and when handling thermal events (in ips_irq_handler) the current status of GPU turbo is updated to match the hardware status. However if during driver initialisation we were unable aquire linkage to the i915 driver enabling GPU turbo will lead to an oops on the first attempt to determine GPU busy status. Ensure that we do not enable GPU turbo unless we have driver linkage. BugLink: http://bugs.launchpad.net/bugs/632430 Cc: stable@kernel.org Signed-off-by: Andy Whitcroft Signed-off-by: Matthew Garrett --- drivers/platform/x86/intel_ips.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/platform/x86/intel_ips.c b/drivers/platform/x86/intel_ips.c index 07a1a4aac60..76e41dc45f7 100644 --- a/drivers/platform/x86/intel_ips.c +++ b/drivers/platform/x86/intel_ips.c @@ -715,7 +715,8 @@ static void update_turbo_limits(struct ips_driver *ips) u32 hts = thm_readl(THM_HTS); ips->cpu_turbo_enabled = !(hts & HTS_PCTD_DIS); - ips->gpu_turbo_enabled = !(hts & HTS_GTD_DIS); + if (ips->gpu_busy) + ips->gpu_turbo_enabled = !(hts & HTS_GTD_DIS); ips->core_power_limit = thm_readw(THM_MPCPC); ips->mch_power_limit = thm_readw(THM_MMGPC); ips->mcp_temp_limit = thm_readw(THM_PTL); @@ -1185,7 +1186,8 @@ static irqreturn_t ips_irq_handler(int irq, void *arg) STS_GPL_SHIFT; /* ignore EC CPU vs GPU pref */ ips->cpu_turbo_enabled = !(sts & STS_PCTD_DIS); - ips->gpu_turbo_enabled = !(sts & STS_GTD_DIS); + if (ips->gpu_busy) + ips->gpu_turbo_enabled = !(sts & STS_GTD_DIS); ips->mcp_temp_limit = (sts & STS_PTL_MASK) >> STS_PTL_SHIFT; ips->mcp_power_limit = (tc1 & STS_PPL_MASK) >> -- cgit v1.2.3 From 4fd07ac00d87b942cc8d8f30a27192fea2fc4ab2 Mon Sep 17 00:00:00 2001 From: Jesse Barnes Date: Tue, 5 Oct 2010 11:26:22 -0700 Subject: IPS driver: apply BIOS provided CPU limit if different from default The BIOS may hand us a lower CPU power limit than the default for a given SKU. We should use it in case the platform isn't designed to dissapate the full TDP of a given part. Signed-off-by: Jesse Barnes Signed-off-by: Matthew Garrett --- drivers/platform/x86/intel_ips.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/platform/x86/intel_ips.c b/drivers/platform/x86/intel_ips.c index 76e41dc45f7..50ab1c93e36 100644 --- a/drivers/platform/x86/intel_ips.c +++ b/drivers/platform/x86/intel_ips.c @@ -1391,9 +1391,10 @@ static struct ips_mcp_limits *ips_detect_cpu(struct ips_driver *ips) tdp = turbo_power & TURBO_TDP_MASK; /* Sanity check TDP against CPU */ - if (limits->mcp_power_limit != (tdp / 8) * 1000) { - dev_warn(&ips->dev->dev, "Warning: CPU TDP doesn't match expected value (found %d, expected %d)\n", - tdp / 8, limits->mcp_power_limit / 1000); + if (limits->core_power_limit != (tdp / 8) * 1000) { + dev_info(&ips->dev->dev, "CPU TDP doesn't match expected value (found %d, expected %d)\n", + tdp / 8, limits->core_power_limit / 1000); + limits->core_power_limit = (tdp / 8) * 1000; } out: -- cgit v1.2.3 From 96f3823f537088c13735cfdfbf284436c802352a Mon Sep 17 00:00:00 2001 From: Jesse Barnes Date: Tue, 5 Oct 2010 14:50:59 -0400 Subject: [PATCH 2/2] IPS driver: disable CPU turbo The undocumented interface we're using for reading CPU power seems to be overreporting power. Until we figure out how to correct it, disable CPU turbo and power reporting to be safe. This will keep the CPU within default limits and still allow us to increase GPU frequency as needed. Signed-off-by: Jesse Barnes Signed-off-by: Matthew Garrett --- drivers/platform/x86/intel_ips.c | 18 +++++++++++++++--- 1 file changed, 15 insertions(+), 3 deletions(-) diff --git a/drivers/platform/x86/intel_ips.c b/drivers/platform/x86/intel_ips.c index 50ab1c93e36..4b3ecdefd6e 100644 --- a/drivers/platform/x86/intel_ips.c +++ b/drivers/platform/x86/intel_ips.c @@ -715,8 +715,15 @@ static void update_turbo_limits(struct ips_driver *ips) u32 hts = thm_readl(THM_HTS); ips->cpu_turbo_enabled = !(hts & HTS_PCTD_DIS); + /* + * Disable turbo for now, until we can figure out why the power figures + * are wrong + */ + ips->cpu_turbo_enabled = false; + if (ips->gpu_busy) ips->gpu_turbo_enabled = !(hts & HTS_GTD_DIS); + ips->core_power_limit = thm_readw(THM_MPCPC); ips->mch_power_limit = thm_readw(THM_MMGPC); ips->mcp_temp_limit = thm_readw(THM_PTL); @@ -895,7 +902,7 @@ static u32 get_cpu_power(struct ips_driver *ips, u32 *last, int period) ret = (ret * 1000) / 65535; *last = val; - return ret; + return 0; } static const u16 temp_decay_factor = 2; @@ -1186,6 +1193,11 @@ static irqreturn_t ips_irq_handler(int irq, void *arg) STS_GPL_SHIFT; /* ignore EC CPU vs GPU pref */ ips->cpu_turbo_enabled = !(sts & STS_PCTD_DIS); + /* + * Disable turbo for now, until we can figure + * out why the power figures are wrong + */ + ips->cpu_turbo_enabled = false; if (ips->gpu_busy) ips->gpu_turbo_enabled = !(sts & STS_GTD_DIS); ips->mcp_temp_limit = (sts & STS_PTL_MASK) >> @@ -1573,8 +1585,8 @@ static int ips_probe(struct pci_dev *dev, const struct pci_device_id *id) /* Save turbo limits & ratios */ rdmsrl(TURBO_POWER_CURRENT_LIMIT, ips->orig_turbo_limit); - ips_enable_cpu_turbo(ips); - ips->cpu_turbo_enabled = true; + ips_disable_cpu_turbo(ips); + ips->cpu_turbo_enabled = false; /* Create thermal adjust thread */ ips->adjust = kthread_create(ips_adjust, ips, "ips-adjust"); -- cgit v1.2.3 From d24a9da573444ab4aff38af2f4a0da07408ff491 Mon Sep 17 00:00:00 2001 From: Matthew Garrett Date: Tue, 5 Oct 2010 14:54:06 -0400 Subject: IPS driver: Fix limit clamping when reducing CPU power Values here are in internal units rather than Watts, so we shouldn't perform any conversion. Signed-off-by: Matthew Garrett --- drivers/platform/x86/intel_ips.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/platform/x86/intel_ips.c b/drivers/platform/x86/intel_ips.c index 4b3ecdefd6e..c44a5e8b8b8 100644 --- a/drivers/platform/x86/intel_ips.c +++ b/drivers/platform/x86/intel_ips.c @@ -415,7 +415,7 @@ static void ips_cpu_lower(struct ips_driver *ips) new_limit = cur_limit - 8; /* 1W decrease */ /* Clamp to SKU TDP limit */ - if (((new_limit * 10) / 8) < (ips->orig_turbo_limit & TURBO_TDP_MASK)) + if (new_limit < (ips->orig_turbo_limit & TURBO_TDP_MASK)) new_limit = ips->orig_turbo_limit & TURBO_TDP_MASK; thm_writew(THM_MPCPC, (new_limit * 10) / 8); -- cgit v1.2.3 From 1df6a2ebd75067aefbdf07482bf8e3d0584e04ee Mon Sep 17 00:00:00 2001 From: Thomas Hellstrom Date: Thu, 30 Sep 2010 12:36:45 +0200 Subject: drm/ttm: Fix two race conditions + fix busy codepaths This fixes a race pointed out by Dave Airlie where we don't take a buffer object about to be destroyed off the LRU lists properly. It also fixes a rare case where a buffer object could be destroyed in the middle of an accelerated eviction. The patch also adds a utility function that can be used to prematurely release GPU memory space usage of an object waiting to be destroyed. For example during eviction or swapout. The above mentioned commit didn't queue the buffer on the delayed destroy list under some rare circumstances. It also didn't completely honor the remove_all parameter. Fixes: https://bugzilla.redhat.com/show_bug.cgi?id=615505 http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=591061 Signed-off-by: Thomas Hellstrom Signed-off-by: Dave Airlie --- drivers/gpu/drm/ttm/ttm_bo.c | 83 +++++++++++++++++++++++++++++++++++++------- include/drm/ttm/ttm_bo_api.h | 4 ++- 2 files changed, 74 insertions(+), 13 deletions(-) diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c index cb4cf7ef4d1..db809e034cc 100644 --- a/drivers/gpu/drm/ttm/ttm_bo.c +++ b/drivers/gpu/drm/ttm/ttm_bo.c @@ -441,6 +441,43 @@ out_err: return ret; } +/** + * Call bo::reserved and with the lru lock held. + * Will release GPU memory type usage on destruction. + * This is the place to put in driver specific hooks. + * Will release the bo::reserved lock and the + * lru lock on exit. + */ + +static void ttm_bo_cleanup_memtype_use(struct ttm_buffer_object *bo) +{ + struct ttm_bo_global *glob = bo->glob; + + if (bo->ttm) { + + /** + * Release the lru_lock, since we don't want to have + * an atomic requirement on ttm_tt[unbind|destroy]. + */ + + spin_unlock(&glob->lru_lock); + ttm_tt_unbind(bo->ttm); + ttm_tt_destroy(bo->ttm); + bo->ttm = NULL; + spin_lock(&glob->lru_lock); + } + + if (bo->mem.mm_node) { + drm_mm_put_block(bo->mem.mm_node); + bo->mem.mm_node = NULL; + } + + atomic_set(&bo->reserved, 0); + wake_up_all(&bo->event_queue); + spin_unlock(&glob->lru_lock); +} + + /** * If bo idle, remove from delayed- and lru lists, and unref. * If not idle, and already on delayed list, do nothing. @@ -456,6 +493,7 @@ static int ttm_bo_cleanup_refs(struct ttm_buffer_object *bo, bool remove_all) int ret; spin_lock(&bo->lock); +retry: (void) ttm_bo_wait(bo, false, false, !remove_all); if (!bo->sync_obj) { @@ -464,31 +502,52 @@ static int ttm_bo_cleanup_refs(struct ttm_buffer_object *bo, bool remove_all) spin_unlock(&bo->lock); spin_lock(&glob->lru_lock); - put_count = ttm_bo_del_from_lru(bo); + ret = ttm_bo_reserve_locked(bo, false, !remove_all, false, 0); + + /** + * Someone else has the object reserved. Bail and retry. + */ - ret = ttm_bo_reserve_locked(bo, false, false, false, 0); - BUG_ON(ret); - if (bo->ttm) - ttm_tt_unbind(bo->ttm); + if (unlikely(ret == -EBUSY)) { + spin_unlock(&glob->lru_lock); + spin_lock(&bo->lock); + goto requeue; + } + + /** + * We can re-check for sync object without taking + * the bo::lock since setting the sync object requires + * also bo::reserved. A busy object at this point may + * be caused by another thread starting an accelerated + * eviction. + */ + + if (unlikely(bo->sync_obj)) { + atomic_set(&bo->reserved, 0); + wake_up_all(&bo->event_queue); + spin_unlock(&glob->lru_lock); + spin_lock(&bo->lock); + if (remove_all) + goto retry; + else + goto requeue; + } + + put_count = ttm_bo_del_from_lru(bo); if (!list_empty(&bo->ddestroy)) { list_del_init(&bo->ddestroy); ++put_count; } - if (bo->mem.mm_node) { - drm_mm_put_block(bo->mem.mm_node); - bo->mem.mm_node = NULL; - } - spin_unlock(&glob->lru_lock); - atomic_set(&bo->reserved, 0); + ttm_bo_cleanup_memtype_use(bo); while (put_count--) kref_put(&bo->list_kref, ttm_bo_ref_bug); return 0; } - +requeue: spin_lock(&glob->lru_lock); if (list_empty(&bo->ddestroy)) { void *sync_obj = bo->sync_obj; diff --git a/include/drm/ttm/ttm_bo_api.h b/include/drm/ttm/ttm_bo_api.h index 267a86c74e2..2040e6c4f17 100644 --- a/include/drm/ttm/ttm_bo_api.h +++ b/include/drm/ttm/ttm_bo_api.h @@ -246,9 +246,11 @@ struct ttm_buffer_object { atomic_t reserved; - /** * Members protected by the bo::lock + * In addition, setting sync_obj to anything else + * than NULL requires bo::reserved to be held. This allows for + * checking NULL while reserved but not holding bo::lock. */ void *sync_obj_arg; -- cgit v1.2.3 From 645a659925ed6cba8faaabd844c2ebb9bda6fb0d Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Tue, 5 Oct 2010 19:27:56 -0700 Subject: ASoC: Add Dimitris Papastamos to Wolfson maintainers Add Dimitris Papastamos as a contact for Wolfson device drivers. Signed-off-by: Mark Brown Signed-off-by: Dimitris Papastamos --- MAINTAINERS | 1 + 1 file changed, 1 insertion(+) diff --git a/MAINTAINERS b/MAINTAINERS index f51409b1527..8c1180f12ee 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -6411,6 +6411,7 @@ F: include/linux/wm97xx.h WOLFSON MICROELECTRONICS DRIVERS M: Mark Brown M: Ian Lartey +M: Dimitris Papastamos T: git git://opensource.wolfsonmicro.com/linux-2.6-audioplus W: http://opensource.wolfsonmicro.com/node/8 S: Supported -- cgit v1.2.3 From cf8eda3ef0039911557a3c11f1f18f9ce2d3c323 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Tue, 5 Oct 2010 19:31:40 -0700 Subject: ASoC: Update links for Wolfson MAINTAINERS entry We also have a separate git for audio, and a generic page for all of our drivers not just the PMICs. Signed-off-by: Mark Brown --- MAINTAINERS | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/MAINTAINERS b/MAINTAINERS index 8c1180f12ee..31306ceb567 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -6412,8 +6412,9 @@ WOLFSON MICROELECTRONICS DRIVERS M: Mark Brown M: Ian Lartey M: Dimitris Papastamos +T: git git://opensource.wolfsonmicro.com/linux-2.6-asoc T: git git://opensource.wolfsonmicro.com/linux-2.6-audioplus -W: http://opensource.wolfsonmicro.com/node/8 +W: http://opensource.wolfsonmicro.com/content/linux-drivers-wolfson-devices S: Supported F: Documentation/hwmon/wm83?? F: drivers/leds/leds-wm83*.c -- cgit v1.2.3 From d20d5ffab92f00188f360c44c791a5ffb988247c Mon Sep 17 00:00:00 2001 From: Antonio Ospite Date: Tue, 5 Oct 2010 17:20:16 +0200 Subject: HID: hidraw, fix a NULL pointer dereference in hidraw_ioctl BUG: unable to handle kernel NULL pointer dereference at 0000000000000028 IP: [] hidraw_ioctl+0xfc/0x32c [hid] [...] This is reproducible by disconnecting the device while userspace does ioctl in a loop and doesn't check return values in order to exit the loop. Signed-off-by: Antonio Ospite Cc: stable@kernel.org Signed-off-by: Jiri Kosina --- drivers/hid/hidraw.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/hid/hidraw.c b/drivers/hid/hidraw.c index 47d70c523d9..9eaf6ae5f97 100644 --- a/drivers/hid/hidraw.c +++ b/drivers/hid/hidraw.c @@ -244,6 +244,10 @@ static long hidraw_ioctl(struct file *file, unsigned int cmd, mutex_lock(&minors_lock); dev = hidraw_table[minor]; + if (!dev) { + ret = -ENODEV; + goto out; + } switch (cmd) { case HIDIOCGRDESCSIZE: @@ -317,6 +321,7 @@ static long hidraw_ioctl(struct file *file, unsigned int cmd, ret = -ENOTTY; } +out: mutex_unlock(&minors_lock); return ret; } -- cgit v1.2.3 From e42dee9a99a3ecd32b5c027e8f7411fb5bc11eb6 Mon Sep 17 00:00:00 2001 From: Antonio Ospite Date: Tue, 5 Oct 2010 17:20:17 +0200 Subject: HID: hidraw, fix a NULL pointer dereference in hidraw_write BUG: unable to handle kernel NULL pointer dereference at 0000000000000028 IP: [] hidraw_write+0x3b/0x116 [hid] [...] This is reproducible by disconnecting the device while userspace writes to dev node in a loop and doesn't check return values in order to exit the loop. Signed-off-by: Antonio Ospite Cc: stable@kernel.org Signed-off-by: Jiri Kosina --- drivers/hid/hidraw.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/hid/hidraw.c b/drivers/hid/hidraw.c index 9eaf6ae5f97..a3866b5c0c4 100644 --- a/drivers/hid/hidraw.c +++ b/drivers/hid/hidraw.c @@ -109,6 +109,12 @@ static ssize_t hidraw_write(struct file *file, const char __user *buffer, size_t int ret = 0; mutex_lock(&minors_lock); + + if (!hidraw_table[minor]) { + ret = -ENODEV; + goto out; + } + dev = hidraw_table[minor]->hid; if (!dev->hid_output_raw_report) { -- cgit v1.2.3 From 7571ae887d3b96d8e7ce63d43828866c6a91cdc6 Mon Sep 17 00:00:00 2001 From: NeilBrown Date: Thu, 7 Oct 2010 11:54:46 +1100 Subject: md/raid1: avoid overflow in raid1 resync when bitmap is in use. bitmap_start_sync returns - via a pass-by-reference variable - the number of sectors before we need to check with the bitmap again. Since commit ef4256733506f245 this number can be substantially larger, 2^27 is a common value. Unfortunately it is an 'int' and so when raid1.c:sync_request shifts it 9 places to the left it becomes 0. This results in a zero-length read which the scsi layer justifiably complains about. This patch just removes the shift so the common case becomes safe with a trivially-correct patch. In the next merge window we will convert this 'int' to a 'sector_t' Reported-by: "George Spelvin" Signed-off-by: NeilBrown --- drivers/md/raid1.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c index ad83a4dcadc..fba4d2feaeb 100644 --- a/drivers/md/raid1.c +++ b/drivers/md/raid1.c @@ -1912,7 +1912,7 @@ static sector_t sync_request(mddev_t *mddev, sector_t sector_nr, int *skipped, i !test_bit(MD_RECOVERY_REQUESTED, &mddev->recovery)) break; BUG_ON(sync_blocks < (PAGE_SIZE>>9)); - if (len > (sync_blocks<<9)) + if ((len >> 9) > sync_blocks) len = sync_blocks<<9; } -- cgit v1.2.3 From db8d9d3591f77cc6b66248b2cdfa1c43deee5ec9 Mon Sep 17 00:00:00 2001 From: NeilBrown Date: Thu, 7 Oct 2010 12:00:50 +1100 Subject: md/raid1: minor bio initialisation improvements. When performing a resync we pre-allocate some bios and repeatedly use them. This requires us to re-initialise them each time. One field (bi_comp_cpu) and some flags weren't being initiaised reliably. Signed-off-by: NeilBrown --- drivers/md/raid1.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c index fba4d2feaeb..0b830bbe1d8 100644 --- a/drivers/md/raid1.c +++ b/drivers/md/raid1.c @@ -1839,7 +1839,9 @@ static sector_t sync_request(mddev_t *mddev, sector_t sector_nr, int *skipped, i /* take from bio_init */ bio->bi_next = NULL; + bio->bi_flags &= ~(BIO_POOL_MASK-1); bio->bi_flags |= 1 << BIO_UPTODATE; + bio->bi_comp_cpu = -1; bio->bi_rw = READ; bio->bi_vcnt = 0; bio->bi_idx = 0; -- cgit v1.2.3 From 5c04f5512f8134c75cd36e5b0354e10e330f4e6e Mon Sep 17 00:00:00 2001 From: Vasiliy Kulikov Date: Fri, 1 Oct 2010 14:18:12 -0700 Subject: md: check return code of read_sb_page Function read_sb_page may return ERR_PTR(...). Check for it. Signed-off-by: Vasiliy Kulikov Cc: Neil Brown Signed-off-by: Andrew Morton Signed-off-by: NeilBrown --- drivers/md/bitmap.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/drivers/md/bitmap.c b/drivers/md/bitmap.c index ed4900ade93..e4fb58db545 100644 --- a/drivers/md/bitmap.c +++ b/drivers/md/bitmap.c @@ -1000,10 +1000,11 @@ static int bitmap_init_from_disk(struct bitmap *bitmap, sector_t start) page = bitmap->sb_page; offset = sizeof(bitmap_super_t); if (!file) - read_sb_page(bitmap->mddev, - bitmap->mddev->bitmap_info.offset, - page, - index, count); + page = read_sb_page( + bitmap->mddev, + bitmap->mddev->bitmap_info.offset, + page, + index, count); } else if (file) { page = read_page(file, index, bitmap, count); offset = 0; -- cgit v1.2.3 From 081003fff467ea0e727f66d5d435b4f473a789b3 Mon Sep 17 00:00:00 2001 From: Johannes Weiner Date: Fri, 1 Oct 2010 07:43:54 +0000 Subject: xfs: properly account for reclaimed inodes When marking an inode reclaimable, a per-AG counter is increased, the inode is tagged reclaimable in its per-AG tree, and, when this is the first reclaimable inode in the AG, the AG entry in the per-mount tree is also tagged. When an inode is finally reclaimed, however, it is only deleted from the per-AG tree. Neither the counter is decreased, nor is the parent tree's AG entry untagged properly. Since the tags in the per-mount tree are not cleared, the inode shrinker iterates over all AGs that have had reclaimable inodes at one point in time. The counters on the other hand signal an increasing amount of slab objects to reclaim. Since "70e60ce xfs: convert inode shrinker to per-filesystem context" this is not a real issue anymore because the shrinker bails out after one iteration. But the problem was observable on a machine running v2.6.34, where the reclaimable work increased and each process going into direct reclaim eventually got stuck on the xfs inode shrinking path, trying to scan several million objects. Fix this by properly unwinding the reclaimable-state tracking of an inode when it is reclaimed. Signed-off-by: Johannes Weiner Cc: stable@kernel.org Reviewed-by: Dave Chinner Signed-off-by: Alex Elder --- fs/xfs/linux-2.6/xfs_sync.c | 19 ++++++++++++++----- 1 file changed, 14 insertions(+), 5 deletions(-) diff --git a/fs/xfs/linux-2.6/xfs_sync.c b/fs/xfs/linux-2.6/xfs_sync.c index d59c4a65d49..81976ffed7d 100644 --- a/fs/xfs/linux-2.6/xfs_sync.c +++ b/fs/xfs/linux-2.6/xfs_sync.c @@ -668,14 +668,11 @@ xfs_inode_set_reclaim_tag( xfs_perag_put(pag); } -void -__xfs_inode_clear_reclaim_tag( - xfs_mount_t *mp, +STATIC void +__xfs_inode_clear_reclaim( xfs_perag_t *pag, xfs_inode_t *ip) { - radix_tree_tag_clear(&pag->pag_ici_root, - XFS_INO_TO_AGINO(mp, ip->i_ino), XFS_ICI_RECLAIM_TAG); pag->pag_ici_reclaimable--; if (!pag->pag_ici_reclaimable) { /* clear the reclaim tag from the perag radix tree */ @@ -689,6 +686,17 @@ __xfs_inode_clear_reclaim_tag( } } +void +__xfs_inode_clear_reclaim_tag( + xfs_mount_t *mp, + xfs_perag_t *pag, + xfs_inode_t *ip) +{ + radix_tree_tag_clear(&pag->pag_ici_root, + XFS_INO_TO_AGINO(mp, ip->i_ino), XFS_ICI_RECLAIM_TAG); + __xfs_inode_clear_reclaim(pag, ip); +} + /* * Inodes in different states need to be treated differently, and the return * value of xfs_iflush is not sufficient to get this right. The following table @@ -838,6 +846,7 @@ reclaim: if (!radix_tree_delete(&pag->pag_ici_root, XFS_INO_TO_AGINO(ip->i_mount, ip->i_ino))) ASSERT(0); + __xfs_inode_clear_reclaim(pag, ip); write_unlock(&pag->pag_ici_lock); /* -- cgit v1.2.3 From dab8dcfa3c8e3b021a138bee7c17791b4991ba55 Mon Sep 17 00:00:00 2001 From: Dave Airlie Date: Thu, 7 Oct 2010 14:01:17 +1000 Subject: drm: don't drop handle reference on unload since the handle references are all tied to a file_priv, and when it disappears all the handle refs go with it. The fbcon ones we'd only notice on unload, but the nouveau notifier one would would happen on reboot. nouveau: Reported-by: Marc Dionne nouveau: Tested-by: Marc Dionne i915 unload: Reported-by: Keith Packard Acked-by: Ben Skeggs Signed-off-by: Dave Airlie --- drivers/gpu/drm/i915/intel_fb.c | 2 +- drivers/gpu/drm/nouveau/nouveau_fbcon.c | 1 - drivers/gpu/drm/nouveau/nouveau_notifier.c | 1 - drivers/gpu/drm/radeon/radeon_fb.c | 1 - 4 files changed, 1 insertion(+), 4 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_fb.c b/drivers/gpu/drm/i915/intel_fb.c index 56ad9df2ccb..b61966c126d 100644 --- a/drivers/gpu/drm/i915/intel_fb.c +++ b/drivers/gpu/drm/i915/intel_fb.c @@ -238,8 +238,8 @@ int intel_fbdev_destroy(struct drm_device *dev, drm_framebuffer_cleanup(&ifb->base); if (ifb->obj) { - drm_gem_object_handle_unreference(ifb->obj); drm_gem_object_unreference(ifb->obj); + ifb->obj = NULL; } return 0; diff --git a/drivers/gpu/drm/nouveau/nouveau_fbcon.c b/drivers/gpu/drm/nouveau/nouveau_fbcon.c index d2047713dc5..dbd30b2e43f 100644 --- a/drivers/gpu/drm/nouveau/nouveau_fbcon.c +++ b/drivers/gpu/drm/nouveau/nouveau_fbcon.c @@ -352,7 +352,6 @@ nouveau_fbcon_destroy(struct drm_device *dev, struct nouveau_fbdev *nfbdev) if (nouveau_fb->nvbo) { nouveau_bo_unmap(nouveau_fb->nvbo); - drm_gem_object_handle_unreference_unlocked(nouveau_fb->nvbo->gem); drm_gem_object_unreference_unlocked(nouveau_fb->nvbo->gem); nouveau_fb->nvbo = NULL; } diff --git a/drivers/gpu/drm/nouveau/nouveau_notifier.c b/drivers/gpu/drm/nouveau/nouveau_notifier.c index 3c9964a8fba..3ec181ff50c 100644 --- a/drivers/gpu/drm/nouveau/nouveau_notifier.c +++ b/drivers/gpu/drm/nouveau/nouveau_notifier.c @@ -79,7 +79,6 @@ nouveau_notifier_takedown_channel(struct nouveau_channel *chan) mutex_lock(&dev->struct_mutex); nouveau_bo_unpin(chan->notifier_bo); mutex_unlock(&dev->struct_mutex); - drm_gem_object_handle_unreference_unlocked(chan->notifier_bo->gem); drm_gem_object_unreference_unlocked(chan->notifier_bo->gem); drm_mm_takedown(&chan->notifier_heap); } diff --git a/drivers/gpu/drm/radeon/radeon_fb.c b/drivers/gpu/drm/radeon/radeon_fb.c index 9cdf6a35bc2..40b0c087b59 100644 --- a/drivers/gpu/drm/radeon/radeon_fb.c +++ b/drivers/gpu/drm/radeon/radeon_fb.c @@ -97,7 +97,6 @@ static void radeonfb_destroy_pinned_object(struct drm_gem_object *gobj) radeon_bo_unpin(rbo); radeon_bo_unreserve(rbo); } - drm_gem_object_handle_unreference(gobj); drm_gem_object_unreference_unlocked(gobj); } -- cgit v1.2.3 From 430c62fb2948d964cf8dc7f3e2f69623c04ef62f Mon Sep 17 00:00:00 2001 From: Jens Axboe Date: Thu, 7 Oct 2010 09:35:16 +0200 Subject: elevator: fix oops on early call to elevator_change() 2.6.36 introduces an API for drivers to switch the IO scheduler instead of manually calling the elevator exit and init functions. This API was added since q->elevator must be cleared in between those two calls. And since we already have this functionality directly from use by the sysfs interface to switch schedulers online, it was prudent to reuse it internally too. But this API needs the queue to be in a fully initialized state before it is called, or it will attempt to unregister elevator kobjects before they have been added. This results in an oops like this: BUG: unable to handle kernel NULL pointer dereference at 0000000000000051 IP: [] sysfs_create_dir+0x2e/0xc0 PGD 47ddfc067 PUD 47c6a1067 PMD 0 Oops: 0000 [#1] PREEMPT SMP last sysfs file: /sys/devices/pci0000:00/0000:00:02.0/0000:04:00.1/irq CPU 2 Modules linked in: t(+) loop hid_apple usbhid ahci ehci_hcd uhci_hcd libahci usbcore nls_base igb Pid: 7319, comm: modprobe Not tainted 2.6.36-rc6+ #132 QSSC-S4R/QSSC-S4R RIP: 0010:[] [] sysfs_create_dir+0x2e/0xc0 RSP: 0018:ffff88027da25d08 EFLAGS: 00010246 RAX: ffff88047c68c528 RBX: 00000000fffffffe RCX: 0000000000000000 RDX: 000000000000002f RSI: 000000000000002f RDI: ffff88047e196c88 RBP: ffff88027da25d38 R08: 0000000000000000 R09: d84156c5635688c0 R10: d84156c5635688c0 R11: 0000000000000000 R12: ffff88047e196c88 R13: 0000000000000000 R14: 0000000000000000 R15: ffff88047c68c528 FS: 00007fcb0b26f6e0(0000) GS:ffff880287400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b CR2: 0000000000000051 CR3: 000000047e76e000 CR4: 00000000000006e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process modprobe (pid: 7319, threadinfo ffff88027da24000, task ffff88027d377090) Stack: ffff88027da25d58 ffff88047c68c528 00000000fffffffe ffff88047e196c88 <0> ffff88047c68c528 ffff88047e05bd90 ffff88027da25d78 ffffffff8123fb77 <0> ffff88047e05bd90 0000000000000000 ffff88047e196c88 ffff88047c68c528 Call Trace: [] kobject_add_internal+0xe7/0x1f0 [] kobject_add_varg+0x38/0x60 [] kobject_add+0x69/0x90 [] ? sysfs_remove_dir+0x20/0xa0 [] ? sub_preempt_count+0x9d/0xe0 [] ? _raw_spin_unlock+0x30/0x50 [] ? sysfs_remove_dir+0x20/0xa0 [] ? sysfs_remove_dir+0x34/0xa0 [] elv_register_queue+0x34/0xa0 [] elevator_change+0xfd/0x250 [] ? t_init+0x0/0x361 [t] [] ? t_init+0x0/0x361 [t] [] t_init+0xa8/0x361 [t] [] do_one_initcall+0x3e/0x170 [] sys_init_module+0xbd/0x220 [] system_call_fastpath+0x16/0x1b Code: e5 41 56 41 55 41 54 49 89 fc 53 48 83 ec 10 48 85 ff 74 52 48 8b 47 18 49 c7 c5 00 46 61 81 48 85 c0 74 04 4c 8b 68 30 45 31 f6 <41> 80 7d 51 00 74 0e 49 8b 44 24 28 4c 89 e7 ff 50 20 49 89 c6 RIP [] sysfs_create_dir+0x2e/0xc0 RSP CR2: 0000000000000051 ---[ end trace a6541d3bf07945df ]--- Fix this by adding a registered bit to the elevator queue, which is set when the sysfs kobjects have been registered. Signed-off-by: Jens Axboe --- block/elevator.c | 12 ++++++++---- include/linux/elevator.h | 1 + 2 files changed, 9 insertions(+), 4 deletions(-) diff --git a/block/elevator.c b/block/elevator.c index 205b09a5bd9..4e11559aa2b 100644 --- a/block/elevator.c +++ b/block/elevator.c @@ -938,6 +938,7 @@ int elv_register_queue(struct request_queue *q) } } kobject_uevent(&e->kobj, KOBJ_ADD); + e->registered = 1; } return error; } @@ -947,6 +948,7 @@ static void __elv_unregister_queue(struct elevator_queue *e) { kobject_uevent(&e->kobj, KOBJ_REMOVE); kobject_del(&e->kobj); + e->registered = 0; } void elv_unregister_queue(struct request_queue *q) @@ -1042,11 +1044,13 @@ static int elevator_switch(struct request_queue *q, struct elevator_type *new_e) spin_unlock_irq(q->queue_lock); - __elv_unregister_queue(old_elevator); + if (old_elevator->registered) { + __elv_unregister_queue(old_elevator); - err = elv_register_queue(q); - if (err) - goto fail_register; + err = elv_register_queue(q); + if (err) + goto fail_register; + } /* * finally exit old elevator and turn off BYPASS. diff --git a/include/linux/elevator.h b/include/linux/elevator.h index 926b50322a4..4fd978e7eb8 100644 --- a/include/linux/elevator.h +++ b/include/linux/elevator.h @@ -93,6 +93,7 @@ struct elevator_queue struct elevator_type *elevator_type; struct mutex sysfs_lock; struct hlist_head *hash; + unsigned int registered:1; }; /* -- cgit v1.2.3 From 67159813127309c1a65d86e40fa0368241fa668c Mon Sep 17 00:00:00 2001 From: Naoya Horiguchi Date: Wed, 8 Sep 2010 10:19:41 +0900 Subject: page-types.c: fix name of unpoison interface The page-types utility still uses an out of date name for the unpoison interface: debugfs:hwpoison/renew-pfn This patch renames and fixes it. Signed-off-by: Naoya Horiguchi Acked-by: Wu Fengguang Signed-off-by: Andi Kleen --- Documentation/vm/page-types.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Documentation/vm/page-types.c b/Documentation/vm/page-types.c index ccd951fa94e..cc96ee2666f 100644 --- a/Documentation/vm/page-types.c +++ b/Documentation/vm/page-types.c @@ -478,7 +478,7 @@ static void prepare_hwpoison_fd(void) } if (opt_unpoison && !hwpoison_forget_fd) { - sprintf(buf, "%s/renew-pfn", hwpoison_debug_fs); + sprintf(buf, "%s/unpoison-pfn", hwpoison_debug_fs); hwpoison_forget_fd = checked_open(buf, O_WRONLY); } } -- cgit v1.2.3 From a337fdac7a5622d1e6547f4b476c14dfe5a2c892 Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Mon, 27 Sep 2010 20:32:19 +0200 Subject: HWPOISON: Copy si_addr_lsb to user The original hwpoison code added a new siginfo field si_addr_lsb to pass the granuality of the fault address to user space. Unfortunately this field was never copied to user space. Fix this here. I added explicit checks for the MCEERR codes to avoid having to patch all potential callers to initialize the field. Signed-off-by: Andi Kleen --- kernel/signal.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/kernel/signal.c b/kernel/signal.c index bded6518778..919562c3d6b 100644 --- a/kernel/signal.c +++ b/kernel/signal.c @@ -2214,6 +2214,14 @@ int copy_siginfo_to_user(siginfo_t __user *to, siginfo_t *from) err |= __put_user(from->si_addr, &to->si_addr); #ifdef __ARCH_SI_TRAPNO err |= __put_user(from->si_trapno, &to->si_trapno); +#endif +#ifdef BUS_MCEERR_AO + /* + * Other callers might not initialize the si_lsb field, + * so check explicitely for the right codes here. + */ + if (from->si_code == BUS_MCEERR_AR || from->si_code == BUS_MCEERR_AO) + err |= __put_user(from->si_addr_lsb, &to->si_addr_lsb); #endif break; case __SI_CHLD: -- cgit v1.2.3 From 0d9ee6a2d4a6e92c49e6fa9469e5731d21ee203e Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Mon, 27 Sep 2010 22:03:33 +0200 Subject: HWPOISON: Report correct address granuality for AO huge page errors The SIGBUS user space signalling is supposed to report the address granuality of a corruption. Pass this information correctly for huge pages by querying the hpage order. Reviewed-by: Naoya Horiguchi Reviewed-by: Wu Fengguang Signed-off-by: Andi Kleen --- mm/memory-failure.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/mm/memory-failure.c b/mm/memory-failure.c index 9c26eeca134..cd7e6974de7 100644 --- a/mm/memory-failure.c +++ b/mm/memory-failure.c @@ -183,7 +183,7 @@ EXPORT_SYMBOL_GPL(hwpoison_filter); * signal. */ static int kill_proc_ao(struct task_struct *t, unsigned long addr, int trapno, - unsigned long pfn) + unsigned long pfn, struct page *page) { struct siginfo si; int ret; @@ -198,7 +198,7 @@ static int kill_proc_ao(struct task_struct *t, unsigned long addr, int trapno, #ifdef __ARCH_SI_TRAPNO si.si_trapno = trapno; #endif - si.si_addr_lsb = PAGE_SHIFT; + si.si_addr_lsb = compound_order(compound_head(page)) + PAGE_SHIFT; /* * Don't use force here, it's convenient if the signal * can be temporarily blocked. @@ -327,7 +327,7 @@ static void add_to_kill(struct task_struct *tsk, struct page *p, * wrong earlier. */ static void kill_procs_ao(struct list_head *to_kill, int doit, int trapno, - int fail, unsigned long pfn) + int fail, struct page *page, unsigned long pfn) { struct to_kill *tk, *next; @@ -352,7 +352,7 @@ static void kill_procs_ao(struct list_head *to_kill, int doit, int trapno, * process anyways. */ else if (kill_proc_ao(tk->tsk, tk->addr, trapno, - pfn) < 0) + pfn, page) < 0) printk(KERN_ERR "MCE %#lx: Cannot send advisory machine check signal to %s:%d\n", pfn, tk->tsk->comm, tk->tsk->pid); @@ -928,7 +928,7 @@ static int hwpoison_user_mappings(struct page *p, unsigned long pfn, * any accesses to the poisoned memory. */ kill_procs_ao(&tokill, !!PageDirty(hpage), trapno, - ret != SWAP_SUCCESS, pfn); + ret != SWAP_SUCCESS, p, pfn); return ret; } -- cgit v1.2.3 From 47f43e7efadacc627f325aba64c6a547de0926db Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Tue, 28 Sep 2010 07:37:55 +0200 Subject: HWPOISON: Stop shrinking at right page count When we call the slab shrinker to free a page we need to stop at page count one because the caller always holds a single reference, not zero. This avoids useless looping over slab shrinkers and freeing too much memory. Reviewed-by: Wu Fengguang Signed-off-by: Andi Kleen --- mm/memory-failure.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/memory-failure.c b/mm/memory-failure.c index cd7e6974de7..757f6b0accf 100644 --- a/mm/memory-failure.c +++ b/mm/memory-failure.c @@ -235,7 +235,7 @@ void shake_page(struct page *p, int access) int nr; do { nr = shrink_slab(1000, GFP_KERNEL, 1000); - if (page_count(p) == 0) + if (page_count(p) == 1) break; } while (nr > 10); } -- cgit v1.2.3 From 936aeb5c4a9fa799abd7d630a94223acedcaad50 Mon Sep 17 00:00:00 2001 From: Henry C Chang Date: Wed, 22 Sep 2010 20:21:17 -0700 Subject: ceph: fix list_add usage on unsafe_writes list Fix argument order. Signed-off-by: Henry C Chang Signed-off-by: Sage Weil --- fs/ceph/file.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/ceph/file.c b/fs/ceph/file.c index 8c044a4f045..66e4da6dba2 100644 --- a/fs/ceph/file.c +++ b/fs/ceph/file.c @@ -697,7 +697,7 @@ more: * start_request so that a tid has been assigned. */ spin_lock(&ci->i_unsafe_lock); - list_add(&ci->i_unsafe_writes, &req->r_unsafe_item); + list_add(&req->r_unsafe_item, &ci->i_unsafe_writes); spin_unlock(&ci->i_unsafe_lock); ceph_get_cap_refs(ci, CEPH_CAP_FILE_WR); } -- cgit v1.2.3 From 6bc18876ba01fd4a077db6e1ed27201e4bda8864 Mon Sep 17 00:00:00 2001 From: Sage Weil Date: Mon, 27 Sep 2010 10:18:52 -0700 Subject: ceph: avoid null deref in osd request error path If we interrupt an osd request, we call __cancel_request, but it wasn't verifying that req->r_osd was non-NULL before dereferencing it. This could cause a crash if osds were flapping and we aborted a request on said osd. Reported-by: Henry C Chang Signed-off-by: Sage Weil --- fs/ceph/osd_client.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/ceph/osd_client.c b/fs/ceph/osd_client.c index dfced1dacbc..3b5571b8ce2 100644 --- a/fs/ceph/osd_client.c +++ b/fs/ceph/osd_client.c @@ -549,7 +549,7 @@ static void __unregister_request(struct ceph_osd_client *osdc, */ static void __cancel_request(struct ceph_osd_request *req) { - if (req->r_sent) { + if (req->r_sent && req->r_osd) { ceph_con_revoke(&req->r_osd->o_con, req->r_request); req->r_sent = 0; } -- cgit v1.2.3 From 92923dcbfcad107b0e0469f579a2455729ccf10e Mon Sep 17 00:00:00 2001 From: "Aneesh Kumar K.V" Date: Tue, 5 Oct 2010 16:03:41 +0530 Subject: ceph: Fix return value of encode_fh function encode_fh function should return 255 on error as done by other file system to indicate EOVERFLOW. Also max_len is in sizeof(u32) units and not in bytes. Signed-off-by: Aneesh Kumar K.V Signed-off-by: Sage Weil --- fs/ceph/export.c | 16 +++++++++------- 1 file changed, 9 insertions(+), 7 deletions(-) diff --git a/fs/ceph/export.c b/fs/ceph/export.c index 4480cb1c63e..387c5823944 100644 --- a/fs/ceph/export.c +++ b/fs/ceph/export.c @@ -42,32 +42,34 @@ struct ceph_nfs_confh { static int ceph_encode_fh(struct dentry *dentry, u32 *rawfh, int *max_len, int connectable) { + int type; struct ceph_nfs_fh *fh = (void *)rawfh; struct ceph_nfs_confh *cfh = (void *)rawfh; struct dentry *parent = dentry->d_parent; struct inode *inode = dentry->d_inode; - int type; + int connected_handle_length = sizeof(*cfh)/4; + int handle_length = sizeof(*fh)/4; /* don't re-export snaps */ if (ceph_snap(inode) != CEPH_NOSNAP) return -EINVAL; - if (*max_len >= sizeof(*cfh)) { + if (*max_len >= connected_handle_length) { dout("encode_fh %p connectable\n", dentry); cfh->ino = ceph_ino(dentry->d_inode); cfh->parent_ino = ceph_ino(parent->d_inode); cfh->parent_name_hash = parent->d_name.hash; - *max_len = sizeof(*cfh); + *max_len = connected_handle_length; type = 2; - } else if (*max_len > sizeof(*fh)) { + } else if (*max_len >= handle_length) { if (connectable) - return -ENOSPC; + return 255; dout("encode_fh %p\n", dentry); fh->ino = ceph_ino(dentry->d_inode); - *max_len = sizeof(*fh); + *max_len = handle_length; type = 1; } else { - return -ENOSPC; + return 255; } return type; } -- cgit v1.2.3 From bba0cd0e3d97472855840af817b766e3f632a501 Mon Sep 17 00:00:00 2001 From: "Aneesh Kumar K.V" Date: Tue, 5 Oct 2010 16:03:42 +0530 Subject: ceph: Update max_len with minimum required size encode_fh on error should update max_len with minimum required size, so that caller can redo the call with the reallocated buffer. This is required with open by handle patch series Signed-off-by: Aneesh Kumar K.V Signed-off-by: Sage Weil --- fs/ceph/export.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/fs/ceph/export.c b/fs/ceph/export.c index 387c5823944..e38423e82f2 100644 --- a/fs/ceph/export.c +++ b/fs/ceph/export.c @@ -62,13 +62,16 @@ static int ceph_encode_fh(struct dentry *dentry, u32 *rawfh, int *max_len, *max_len = connected_handle_length; type = 2; } else if (*max_len >= handle_length) { - if (connectable) + if (connectable) { + *max_len = connected_handle_length; return 255; + } dout("encode_fh %p\n", dentry); fh->ino = ceph_ino(dentry->d_inode); *max_len = handle_length; type = 1; } else { + *max_len = handle_length; return 255; } return type; -- cgit v1.2.3 From 21b559de56695d36b3f0819b7e2454737db254f8 Mon Sep 17 00:00:00 2001 From: Greg Farnum Date: Wed, 6 Oct 2010 15:46:30 -0700 Subject: ceph: send cap release message early on failed revoke. If an MDS tries to revoke caps that we don't have, we want to send releases early since they probably contain the caps message the MDS is looking for. Previously, we only sent the messages if we didn't have the inode either. But in a multi-mds system we can retain the inode after dropping all caps for a single MDS. Signed-off-by: Greg Farnum Signed-off-by: Sage Weil --- fs/ceph/caps.c | 23 +++++++++++++---------- 1 file changed, 13 insertions(+), 10 deletions(-) diff --git a/fs/ceph/caps.c b/fs/ceph/caps.c index 73c153092f7..97de325a49f 100644 --- a/fs/ceph/caps.c +++ b/fs/ceph/caps.c @@ -2774,15 +2774,7 @@ void ceph_handle_caps(struct ceph_mds_session *session, if (op == CEPH_CAP_OP_IMPORT) __queue_cap_release(session, vino.ino, cap_id, mseq, seq); - - /* - * send any full release message to try to move things - * along for the mds (who clearly thinks we still have this - * cap). - */ - ceph_add_cap_releases(mdsc, session); - ceph_send_cap_releases(mdsc, session); - goto done; + goto flush_cap_releases; } /* these will work even if we don't have a cap yet */ @@ -2810,7 +2802,7 @@ void ceph_handle_caps(struct ceph_mds_session *session, dout(" no cap on %p ino %llx.%llx from mds%d\n", inode, ceph_ino(inode), ceph_snap(inode), mds); spin_unlock(&inode->i_lock); - goto done; + goto flush_cap_releases; } /* note that each of these drops i_lock for us */ @@ -2834,6 +2826,17 @@ void ceph_handle_caps(struct ceph_mds_session *session, ceph_cap_op_name(op)); } + goto done; + +flush_cap_releases: + /* + * send any full release message to try to move things + * along for the mds (who clearly thinks we still have this + * cap). + */ + ceph_add_cap_releases(mdsc, session); + ceph_send_cap_releases(mdsc, session); + done: mutex_unlock(&session->s_mutex); done_unlocked: -- cgit v1.2.3 From d91f2438d881514e4a923fd786dbd94b764a9440 Mon Sep 17 00:00:00 2001 From: Sage Weil Date: Wed, 22 Sep 2010 11:16:00 -0700 Subject: ceph: update issue_seq on cap grant We need to update the issue_seq on any grant operation, be it via an MDS reply or a separate grant message. The update in the grant path was missing. This broke cap release for inodes in which the MDS sent an explicit grant message that was not soon after followed by a successful MDS reply on the same inode. Also fix the signedness on seq locals. Signed-off-by: Sage Weil --- fs/ceph/caps.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/fs/ceph/caps.c b/fs/ceph/caps.c index 97de325a49f..5e9da996a15 100644 --- a/fs/ceph/caps.c +++ b/fs/ceph/caps.c @@ -2283,7 +2283,8 @@ static void handle_cap_grant(struct inode *inode, struct ceph_mds_caps *grant, { struct ceph_inode_info *ci = ceph_inode(inode); int mds = session->s_mds; - int seq = le32_to_cpu(grant->seq); + unsigned seq = le32_to_cpu(grant->seq); + unsigned issue_seq = le32_to_cpu(grant->issue_seq); int newcaps = le32_to_cpu(grant->caps); int issued, implemented, used, wanted, dirty; u64 size = le64_to_cpu(grant->size); @@ -2295,8 +2296,8 @@ static void handle_cap_grant(struct inode *inode, struct ceph_mds_caps *grant, int revoked_rdcache = 0; int queue_invalidate = 0; - dout("handle_cap_grant inode %p cap %p mds%d seq %d %s\n", - inode, cap, mds, seq, ceph_cap_string(newcaps)); + dout("handle_cap_grant inode %p cap %p mds%d seq %u/%u %s\n", + inode, cap, mds, seq, issue_seq, ceph_cap_string(newcaps)); dout(" size %llu max_size %llu, i_size %llu\n", size, max_size, inode->i_size); @@ -2392,6 +2393,7 @@ static void handle_cap_grant(struct inode *inode, struct ceph_mds_caps *grant, } cap->seq = seq; + cap->issue_seq = issue_seq; /* file layout may have changed */ ci->i_layout = grant->layout; -- cgit v1.2.3 From f241e6607b5a5aefa23c652dbe947b7465633984 Mon Sep 17 00:00:00 2001 From: Robin Holt Date: Thu, 7 Oct 2010 12:59:26 -0700 Subject: mm: alloc_large_system_hash() printk overflow on 16TB boot During boot of a 16TB system, the following is printed: Dentry cache hash table entries: -2147483648 (order: 22, 17179869184 bytes) Signed-off-by: Robin Holt Reviewed-by: WANG Cong Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/page_alloc.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/mm/page_alloc.c b/mm/page_alloc.c index a8cfa9cc6e8..f12ad1836ab 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -5182,9 +5182,9 @@ void *__init alloc_large_system_hash(const char *tablename, if (!table) panic("Failed to allocate %s hash table\n", tablename); - printk(KERN_INFO "%s hash table entries: %d (order: %d, %lu bytes)\n", + printk(KERN_INFO "%s hash table entries: %ld (order: %d, %lu bytes)\n", tablename, - (1U << log2qty), + (1UL << log2qty), ilog2(size) - PAGE_SHIFT, size); -- cgit v1.2.3 From ad4ca5f4b70236dab5e457ff6567d36f75d2e7c5 Mon Sep 17 00:00:00 2001 From: "Kirill A. Shutemov" Date: Thu, 7 Oct 2010 12:59:27 -0700 Subject: memcg: fix thresholds with use_hierarchy == 1 We need to check parent's thresholds if parent has use_hierarchy == 1 to be sure that parent's threshold events will be triggered even if parent itself is not active (no MEM_CGROUP_EVENTS). Signed-off-by: Kirill A. Shutemov Reviewed-by: Daisuke Nishimura Acked-by: KAMEZAWA Hiroyuki Acked-by: Balbir Singh Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/memcontrol.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 3eed583895a..9be3cf8a5da 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -3587,9 +3587,13 @@ unlock: static void mem_cgroup_threshold(struct mem_cgroup *memcg) { - __mem_cgroup_threshold(memcg, false); - if (do_swap_account) - __mem_cgroup_threshold(memcg, true); + while (memcg) { + __mem_cgroup_threshold(memcg, false); + if (do_swap_account) + __mem_cgroup_threshold(memcg, true); + + memcg = parent_mem_cgroup(memcg); + } } static int compare_thresholds(const void *a, const void *b) -- cgit v1.2.3 From 880b0e2649b55ccd73b304dedb69aa1221a88f9c Mon Sep 17 00:00:00 2001 From: Andrew Morton Date: Thu, 7 Oct 2010 12:59:28 -0700 Subject: MAINTAINERS: Haavard has moved Cc: Haavard Skinnemoen Cc: Hans-Christian Egtvedt Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- MAINTAINERS | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/MAINTAINERS b/MAINTAINERS index f46d8e66333..ec9782bc15b 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -2535,7 +2535,7 @@ S: Supported F: drivers/scsi/gdt* GENERIC GPIO I2C DRIVER -M: Haavard Skinnemoen +M: Haavard Skinnemoen S: Supported F: drivers/i2c/busses/i2c-gpio.c F: include/linux/i2c-gpio.h -- cgit v1.2.3 From aaac7d9e0a0630e79069341a37978b39e4bca704 Mon Sep 17 00:00:00 2001 From: Kyungmin Park Date: Thu, 7 Oct 2010 12:59:28 -0700 Subject: MAINTAINERS: add Samsung S5P series FIMC maintainers Add Samsung S5P series FIMC(Camera Interface) maintainers. Signed-off-by: Kyungmin Park Cc: Kyungmin Park Cc: Sylwester Nawrocki Cc: Russell King Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- MAINTAINERS | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/MAINTAINERS b/MAINTAINERS index ec9782bc15b..d79fd7aae98 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -969,6 +969,16 @@ L: linux-samsung-soc@vger.kernel.org (moderated for non-subscribers) S: Maintained F: arch/arm/mach-s5p*/ +ARM/SAMSUNG S5P SERIES FIMC SUPPORT +M: Kyungmin Park +M: Sylwester Nawrocki +L: linux-arm-kernel@lists.infradead.org +L: linux-media@vger.kernel.org +S: Maintained +F: arch/arm/plat-s5p/dev-fimc* +F: arch/arm/plat-samsung/include/plat/*fimc* +F: drivers/media/video/s5p-fimc/ + ARM/SHMOBILE ARM ARCHITECTURE M: Paul Mundt M: Magnus Damm -- cgit v1.2.3 From 27b3d80a7b6adcf069b5e869e4efcc3a79f88a91 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Thu, 7 Oct 2010 12:59:29 -0700 Subject: sysctl: fix min/max handling in __do_proc_doulongvec_minmax() When proc_doulongvec_minmax() is used with an array of longs, and no min/max check requested (.extra1 or .extra2 being NULL), we dereference a NULL pointer for the second element of the array. Noticed while doing some changes in network stack for the "16TB problem" Fix is to not change min & max pointers in __do_proc_doulongvec_minmax(), so that all elements of the vector share an unique min/max limit, like proc_dointvec_minmax(). [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Eric Dumazet Cc: "Eric W. Biederman" Cc: Americo Wang Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- kernel/sysctl.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/sysctl.c b/kernel/sysctl.c index f88552c6d22..3a45c224770 100644 --- a/kernel/sysctl.c +++ b/kernel/sysctl.c @@ -2485,7 +2485,7 @@ static int __do_proc_doulongvec_minmax(void *data, struct ctl_table *table, int kbuf[left] = 0; } - for (; left && vleft--; i++, min++, max++, first=0) { + for (; left && vleft--; i++, first = 0) { unsigned long val; if (write) { -- cgit v1.2.3 From 1a95036465e6abdcb639f0d7bb1ec612663caf5b Mon Sep 17 00:00:00 2001 From: Kukjin Kim Date: Thu, 9 Sep 2010 08:56:15 +0900 Subject: ARM: SAMSUNG: Fix build warnings because of unused codes This patch removes following unused codes for removing build warnings. arch/arm/plat-samsung/adc.c:438: warning: unused variable 'flags' arch/arm/mach-s5pv210/clock.c:176: warning: 's5pv210_clk_ip4_ctrl' defined but not used Signed-off-by: Kukjin Kim --- arch/arm/mach-s5pv210/clock.c | 5 ----- arch/arm/plat-samsung/adc.c | 1 - 2 files changed, 6 deletions(-) diff --git a/arch/arm/mach-s5pv210/clock.c b/arch/arm/mach-s5pv210/clock.c index cfecd70657c..d562670e1b0 100644 --- a/arch/arm/mach-s5pv210/clock.c +++ b/arch/arm/mach-s5pv210/clock.c @@ -173,11 +173,6 @@ static int s5pv210_clk_ip3_ctrl(struct clk *clk, int enable) return s5p_gatectrl(S5P_CLKGATE_IP3, clk, enable); } -static int s5pv210_clk_ip4_ctrl(struct clk *clk, int enable) -{ - return s5p_gatectrl(S5P_CLKGATE_IP4, clk, enable); -} - static int s5pv210_clk_mask0_ctrl(struct clk *clk, int enable) { return s5p_gatectrl(S5P_CLK_SRC_MASK0, clk, enable); diff --git a/arch/arm/plat-samsung/adc.c b/arch/arm/plat-samsung/adc.c index 04d9521ddc9..e8f2be2d67f 100644 --- a/arch/arm/plat-samsung/adc.c +++ b/arch/arm/plat-samsung/adc.c @@ -435,7 +435,6 @@ static int s3c_adc_suspend(struct platform_device *pdev, pm_message_t state) static int s3c_adc_resume(struct platform_device *pdev) { struct adc_device *adc = platform_get_drvdata(pdev); - unsigned long flags; clk_enable(adc->clk); enable_irq(adc->irq); -- cgit v1.2.3 From 4341f9b38fe33aab51439ae59593e149a6f61d9f Mon Sep 17 00:00:00 2001 From: SeungChull Suh Date: Sat, 2 Oct 2010 12:48:12 +0900 Subject: ARM: S5P: Bug fix on errors of build with CONFIG_PREEMPT_NONE This patch adds header into the below files for build with CONFIG_PREEMPT_NONE. arch/arm/mach-s5p6440/cpu.c arch/arm/mach-s5p6442/cpu.c arch/arm/mach-s5pc100/cpu.c arch/arm/mach-s5pv210/cpu.c Following is error message of in case of s5pv210_defconfig with CONFIG_PREEMPT_NONE. arch/arm/mach-s5pv210/cpu.c:91: error: implicit declaration of function 'need_resched' Signed-off-by: SeungChull Suh [kgene.kim@samsung.com: removed mach-s5p64x0/cpu.c] [kgene.kim@samsung.com: added fix mach-s5p6440/cpu.c] Signed-off-by: Kukjin Kim --- arch/arm/mach-s5p6440/cpu.c | 1 + arch/arm/mach-s5p6442/cpu.c | 1 + arch/arm/mach-s5pc100/cpu.c | 1 + arch/arm/mach-s5pv210/cpu.c | 1 + 4 files changed, 4 insertions(+) diff --git a/arch/arm/mach-s5p6440/cpu.c b/arch/arm/mach-s5p6440/cpu.c index 526f33adb31..ec592e86605 100644 --- a/arch/arm/mach-s5p6440/cpu.c +++ b/arch/arm/mach-s5p6440/cpu.c @@ -19,6 +19,7 @@ #include #include #include +#include #include #include diff --git a/arch/arm/mach-s5p6442/cpu.c b/arch/arm/mach-s5p6442/cpu.c index a48fb553fd0..70ac681af72 100644 --- a/arch/arm/mach-s5p6442/cpu.c +++ b/arch/arm/mach-s5p6442/cpu.c @@ -19,6 +19,7 @@ #include #include #include +#include #include #include diff --git a/arch/arm/mach-s5pc100/cpu.c b/arch/arm/mach-s5pc100/cpu.c index 251c92ac5b2..cd1afbce83e 100644 --- a/arch/arm/mach-s5pc100/cpu.c +++ b/arch/arm/mach-s5pc100/cpu.c @@ -21,6 +21,7 @@ #include #include #include +#include #include #include diff --git a/arch/arm/mach-s5pv210/cpu.c b/arch/arm/mach-s5pv210/cpu.c index 77f456c91ad..245b82b53df 100644 --- a/arch/arm/mach-s5pv210/cpu.c +++ b/arch/arm/mach-s5pv210/cpu.c @@ -19,6 +19,7 @@ #include #include #include +#include #include #include -- cgit v1.2.3 From 7cf4b482f06df0b590a9bc1561a5a81d67e0fe4c Mon Sep 17 00:00:00 2001 From: Marek Szyprowski Date: Thu, 7 Oct 2010 17:19:10 +0900 Subject: ARM: SAMSUNG: Add a workaround for get_clock() for serial driver Serial drivers call get_clock() very early, before platform bus has been set up, this requires a special check to let them get a proper clock. Without this patch, a serial console is broken on S5PV310 and S5PC210 boards. Signed-off-by: Marek Szyprowski Signed-off-by: Kyungmin Park [kgene.kim@samsung.com: fix coding-style] Signed-off-by: Kukjin Kim Cc: Ben Dooks --- arch/arm/plat-samsung/clock.c | 27 ++++++++++++++++++++++++++- 1 file changed, 26 insertions(+), 1 deletion(-) diff --git a/arch/arm/plat-samsung/clock.c b/arch/arm/plat-samsung/clock.c index 90a20512d68..e8d20b0bc50 100644 --- a/arch/arm/plat-samsung/clock.c +++ b/arch/arm/plat-samsung/clock.c @@ -48,6 +48,9 @@ #include #include +#include +#include /* for s3c24xx_uart_devs */ + /* clock information */ static LIST_HEAD(clocks); @@ -65,6 +68,28 @@ static int clk_null_enable(struct clk *clk, int enable) return 0; } +static int dev_is_s3c_uart(struct device *dev) +{ + struct platform_device **pdev = s3c24xx_uart_devs; + int i; + for (i = 0; i < ARRAY_SIZE(s3c24xx_uart_devs); i++, pdev++) + if (*pdev && dev == &(*pdev)->dev) + return 1; + return 0; +} + +/* + * Serial drivers call get_clock() very early, before platform bus + * has been set up, this requires a special check to let them get + * a proper clock + */ + +static int dev_is_platform_device(struct device *dev) +{ + return dev->bus == &platform_bus_type || + (dev->bus == NULL && dev_is_s3c_uart(dev)); +} + /* Clock API calls */ struct clk *clk_get(struct device *dev, const char *id) @@ -73,7 +98,7 @@ struct clk *clk_get(struct device *dev, const char *id) struct clk *clk = ERR_PTR(-ENOENT); int idno; - if (dev == NULL || dev->bus != &platform_bus_type) + if (dev == NULL || !dev_is_platform_device(dev)) idno = -1; else idno = to_platform_device(dev)->id; -- cgit v1.2.3 From b62be8ea9db4048112219ff6d6ce5f183179d4dc Mon Sep 17 00:00:00 2001 From: Jin Dongming Date: Thu, 26 Aug 2010 17:29:05 +0900 Subject: x86, mce, therm_throt.c: Fix missing curly braces in error handling logic When the feature PTS is not supported by CPU, the sysfile package_power_limit_count for package should not be generated. This patch is used for fixing missing { and }. The patch is not complete as there are other error handling problems in this function - but that can wait until the merge window. Signed-off-by: Jin Dongming Reviewed-by: Fenghua Yu Acked-by: Jean Delvare Cc: Brown Len Cc: Guenter Roeck Cc: Hidetoshi Seto Cc: lm-sensors@lm-sensors.org LKML-Reference: <4C7625D1.4060201@np.css.fujitsu.com> Signed-off-by: Ingo Molnar --- arch/x86/kernel/cpu/mcheck/therm_throt.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/x86/kernel/cpu/mcheck/therm_throt.c b/arch/x86/kernel/cpu/mcheck/therm_throt.c index d9368eeda30..169d8804a9f 100644 --- a/arch/x86/kernel/cpu/mcheck/therm_throt.c +++ b/arch/x86/kernel/cpu/mcheck/therm_throt.c @@ -216,7 +216,7 @@ static __cpuinit int thermal_throttle_add_dev(struct sys_device *sys_dev, err = sysfs_add_file_to_group(&sys_dev->kobj, &attr_core_power_limit_count.attr, thermal_attr_group.name); - if (cpu_has(c, X86_FEATURE_PTS)) + if (cpu_has(c, X86_FEATURE_PTS)) { err = sysfs_add_file_to_group(&sys_dev->kobj, &attr_package_throttle_count.attr, thermal_attr_group.name); @@ -224,6 +224,7 @@ static __cpuinit int thermal_throttle_add_dev(struct sys_device *sys_dev, err = sysfs_add_file_to_group(&sys_dev->kobj, &attr_package_power_limit_count.attr, thermal_attr_group.name); + } return err; } -- cgit v1.2.3 From 5c189208b606a85b4e97109af70d59f10a42fdfd Mon Sep 17 00:00:00 2001 From: Anders Larsen Date: Thu, 7 Oct 2010 20:44:15 +0100 Subject: ARM: 6436/1: AT91: Fix power-saving in idle-mode on 926T processors According to Atmel, their 926T processors (AT91 post RM9200) requires 'Wait for Interrupt' mode be entered right after disabling the processor clock in order to minimise current consumption when idle, so do both provided we're not running on a 920T (an RM9200). Furthermore, get rid of the #ifndef CONFIG_DEBUG_KERNEL, since arch_idle() can be turned off completely with the kernel parameter 'nohlt'. Cc: Andrew Victor Signed-off-by: Anders Larsen Signed-off-by: Russell King --- arch/arm/mach-at91/include/mach/system.h | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/arch/arm/mach-at91/include/mach/system.h b/arch/arm/mach-at91/include/mach/system.h index c80e090b367..ee8db152592 100644 --- a/arch/arm/mach-at91/include/mach/system.h +++ b/arch/arm/mach-at91/include/mach/system.h @@ -28,17 +28,16 @@ static inline void arch_idle(void) { -#ifndef CONFIG_DEBUG_KERNEL /* * Disable the processor clock. The processor will be automatically * re-enabled by an interrupt or by a reset. */ at91_sys_write(AT91_PMC_SCDR, AT91_PMC_PCK); -#else +#ifndef CONFIG_CPU_ARM920T /* * Set the processor (CP15) into 'Wait for Interrupt' mode. - * Unlike disabling the processor clock via the PMC (above) - * this allows the processor to be woken via JTAG. + * Post-RM9200 processors need this in conjunction with the above + * to save power when idle. */ cpu_do_idle(); #endif -- cgit v1.2.3 From c0bb5862a9076992e2cbeb5fa0d08c2ac3d4fbb0 Mon Sep 17 00:00:00 2001 From: Tony Lindgren Date: Thu, 7 Oct 2010 19:34:04 +0100 Subject: ARM: 6435/1: Fix HWCAP_TLS flag for ARM11MPCore/Cortex-A9 Commit 14eff1812679c76564b775aa95cdd378965f6cfb added proper detection for ARM11MPCore/Cortex-A9 instead of detecting them as ARMv7. However, it was missing the HWCAP_TLS flags. HWCAP_TLS is needed if support for earlier ARMv6 is compiled into the same kernel. Without HWCAP_TLS flags the userspace won't work unless nosmp is specified: Kernel panic - not syncing: Attempted to kill init! CPU0: stopping ] (unwind_backtrace+0x0/0xec) from [] (do_IPI+0xfc/0x184) ] (do_IPI+0xfc/0x184) from [] (__irq_svc+0x9c/0x160) Exception stack(0xc0565f80 to 0xc0565fc8) 5f80: 00000001 c05772a0 00000000 00003a61 c0564000 c05cf500 c003603c c0578600 5fa0: 80033ef0 410fc091 0000001f 00000000 00000000 c0565fc8 c00b91f8 c0057cb4 5fc0: 20000013 ffffffff [] (__irq_svc+0x9c/0x160) from [] (default_idle+0x30/0x38) [] (default_idle+0x30/0x38) from [] (cpu_idle+0x9c/0xf8) [] (cpu_idle+0x9c/0xf8) from [] (start_kernel+0x2a4/0x300) [] (start_kernel+0x2a4/0x300) from [<80008084>] (0x80008084) Signed-off-by: Tony Lindgren Signed-off-by: Russell King --- arch/arm/mm/proc-v7.S | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/mm/proc-v7.S b/arch/arm/mm/proc-v7.S index 75619c55f13..197f21bed5e 100644 --- a/arch/arm/mm/proc-v7.S +++ b/arch/arm/mm/proc-v7.S @@ -373,7 +373,7 @@ __v7_ca9mp_proc_info: b __v7_ca9mp_setup .long cpu_arch_name .long cpu_elf_name - .long HWCAP_SWP|HWCAP_HALF|HWCAP_THUMB|HWCAP_FAST_MULT|HWCAP_EDSP + .long HWCAP_SWP|HWCAP_HALF|HWCAP_THUMB|HWCAP_FAST_MULT|HWCAP_EDSP|HWCAP_TLS .long cpu_v7_name .long v7_processor_functions .long v7wbi_tlb_fns -- cgit v1.2.3 From 22377ec5ea0a6d65a712465df33f7c2058ac32aa Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Eric=20B=C3=A9nard?= Date: Fri, 8 Oct 2010 10:37:40 +0200 Subject: cpuimx27: fix compile when ULPI is selected MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit without this patch we get : arch/arm/mach-imx/built-in.o: In function `eukrea_cpuimx27_init': eukrea_mbimx27-baseboard.c:(.init.text+0x44c): undefined reference to `mxc_ulpi_access_ops' Signed-off-by: Eric Bénard Signed-off-by: Sascha Hauer --- arch/arm/mach-imx/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/mach-imx/Kconfig b/arch/arm/mach-imx/Kconfig index c5c0369bb48..2f7e2728970 100644 --- a/arch/arm/mach-imx/Kconfig +++ b/arch/arm/mach-imx/Kconfig @@ -122,6 +122,7 @@ config MACH_CPUIMX27 select IMX_HAVE_PLATFORM_IMX_I2C select IMX_HAVE_PLATFORM_IMX_UART select IMX_HAVE_PLATFORM_MXC_NAND + select MXC_ULPI if USB_ULPI help Include support for Eukrea CPUIMX27 platform. This includes specific configurations for the module and its peripherals. -- cgit v1.2.3 From 4793ca4028e4dcdbf2740db50995c9378ded3cf8 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Eric=20B=C3=A9nard?= Date: Fri, 8 Oct 2010 10:37:41 +0200 Subject: cpuimx27: fix i2c bus selection MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Recent clean of i.MX devices registration changed the i2C bus number selected for our platform (Freescale start peripheral ID at 1, kernel now start it at 0 so i.MX27's i2c 1 is kernel's i2c 0). Without this fix, i2c is unusable on this platform. Signed-off-by: Eric Bénard Acked-by: Uwe Kleine-König Signed-off-by: Sascha Hauer --- arch/arm/mach-imx/mach-cpuimx27.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/mach-imx/mach-cpuimx27.c b/arch/arm/mach-imx/mach-cpuimx27.c index 575ff1ae85a..ac30883a716 100644 --- a/arch/arm/mach-imx/mach-cpuimx27.c +++ b/arch/arm/mach-imx/mach-cpuimx27.c @@ -259,7 +259,7 @@ static void __init eukrea_cpuimx27_init(void) i2c_register_board_info(0, eukrea_cpuimx27_i2c_devices, ARRAY_SIZE(eukrea_cpuimx27_i2c_devices)); - imx27_add_i2c_imx1(&cpuimx27_i2c1_data); + imx27_add_i2c_imx0(&cpuimx27_i2c1_data); platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices)); -- cgit v1.2.3 From 6939a5aca7cfada279a24c307e772f33104fca20 Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Fri, 8 Oct 2010 13:40:27 +0100 Subject: drm/i915: Prevent module unload to avoid random memory corruption The i915 driver has quite a few module unload bugs, the known ones at least have fixes that are targeting 2.6.37. However, in order to maintain a stable kernel, we should prevent this known random memory corruption following driver unload. This should have very low impact on normal users who are unlikely to need to unload the i915 driver. Suggested-by: Thomas Gleixner Acked-by: Daniel Vetter Cc: stable@kernel.org Signed-off-by: Chris Wilson --- drivers/gpu/drm/i915/i915_dma.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c index c74e4e8006d..2dd2c93ebfa 100644 --- a/drivers/gpu/drm/i915/i915_dma.c +++ b/drivers/gpu/drm/i915/i915_dma.c @@ -2231,6 +2231,9 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags) dev_priv->mchdev_lock = &mchdev_lock; spin_unlock(&mchdev_lock); + /* XXX Prevent module unload due to memory corruption bugs. */ + __module_get(THIS_MODULE); + return 0; out_workqueue_free: -- cgit v1.2.3 From f17b1f9f1a5882e486aad469b9ac4cb18581707f Mon Sep 17 00:00:00 2001 From: Boaz Harrosh Date: Thu, 7 Oct 2010 13:37:51 -0400 Subject: exofs: Fix double page_unlock BUG in write_begin/end This BUG is there since the first submit of the code, but only triggered in last Kernel. It's timing related do to the asynchronous object-creation behaviour of exofs. (Which should be investigated farther) The bug is obvious hence the fixed. Signed-off-by: Boaz Harrosh --- fs/exofs/inode.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/fs/exofs/inode.c b/fs/exofs/inode.c index eb7368ebd8c..3eadd97324b 100644 --- a/fs/exofs/inode.c +++ b/fs/exofs/inode.c @@ -54,6 +54,9 @@ struct page_collect { unsigned nr_pages; unsigned long length; loff_t pg_first; /* keep 64bit also in 32-arches */ + bool read_4_write; /* This means two things: that the read is sync + * And the pages should not be unlocked. + */ }; static void _pcol_init(struct page_collect *pcol, unsigned expected_pages, @@ -71,6 +74,7 @@ static void _pcol_init(struct page_collect *pcol, unsigned expected_pages, pcol->nr_pages = 0; pcol->length = 0; pcol->pg_first = -1; + pcol->read_4_write = false; } static void _pcol_reset(struct page_collect *pcol) @@ -347,7 +351,8 @@ static int readpage_strip(void *data, struct page *page) if (PageError(page)) ClearPageError(page); - unlock_page(page); + if (!pcol->read_4_write) + unlock_page(page); EXOFS_DBGMSG("readpage_strip(0x%lx, 0x%lx) empty page," " splitting\n", inode->i_ino, page->index); @@ -428,6 +433,7 @@ static int _readpage(struct page *page, bool is_sync) /* readpage_strip might call read_exec(,is_sync==false) at several * places but not if we have a single page. */ + pcol.read_4_write = is_sync; ret = readpage_strip(&pcol, page); if (ret) { EXOFS_ERR("_readpage => %d\n", ret); -- cgit v1.2.3 From 7fcca7d900957b43c84da171b750afcf1682808a Mon Sep 17 00:00:00 2001 From: Len Brown Date: Tue, 5 Oct 2010 13:43:14 -0400 Subject: intel_idle: enable Atom C6 ATM-C6 was commented out, pending public documentation. https://bugzilla.kernel.org/show_bug.cgi?id=19762 Tested-by: Dennis Jansen Signed-off-by: Len Brown --- drivers/idle/intel_idle.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/drivers/idle/intel_idle.c b/drivers/idle/intel_idle.c index 0906fc5b69b..c37ef64d146 100644 --- a/drivers/idle/intel_idle.c +++ b/drivers/idle/intel_idle.c @@ -157,13 +157,13 @@ static struct cpuidle_state atom_cstates[MWAIT_MAX_NUM_CSTATES] = { { /* MWAIT C5 */ }, { /* MWAIT C6 */ .name = "ATM-C6", - .desc = "MWAIT 0x40", - .driver_data = (void *) 0x40, + .desc = "MWAIT 0x52", + .driver_data = (void *) 0x52, .flags = CPUIDLE_FLAG_TIME_VALID | CPUIDLE_FLAG_TLB_FLUSHED, - .exit_latency = 200, + .exit_latency = 140, .power_usage = 150, - .target_residency = 800, - .enter = NULL }, /* disabled */ + .target_residency = 560, + .enter = &intel_idle }, }; /** -- cgit v1.2.3 From e4c4776dea9fd0295ebb3b215599d52938d6d7a3 Mon Sep 17 00:00:00 2001 From: Mike Snitzer Date: Sat, 9 Oct 2010 12:12:13 +1030 Subject: virtio-blk: fix request leak. Must drop reference taken by blk_make_request(). Signed-off-by: Mike Snitzer Signed-off-by: Rusty Russell Cc: stable@kernel.org # .35.x Signed-off-by: Linus Torvalds --- drivers/block/virtio_blk.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c index 2aafafca2b1..1101e251a62 100644 --- a/drivers/block/virtio_blk.c +++ b/drivers/block/virtio_blk.c @@ -202,6 +202,7 @@ static int virtblk_get_id(struct gendisk *disk, char *id_str) struct virtio_blk *vblk = disk->private_data; struct request *req; struct bio *bio; + int err; bio = bio_map_kern(vblk->disk->queue, id_str, VIRTIO_BLK_ID_BYTES, GFP_KERNEL); @@ -215,7 +216,10 @@ static int virtblk_get_id(struct gendisk *disk, char *id_str) } req->cmd_type = REQ_TYPE_SPECIAL; - return blk_execute_rq(vblk->disk->queue, vblk->disk, req, false); + err = blk_execute_rq(vblk->disk->queue, vblk->disk, req, false); + blk_put_request(req); + + return err; } static int virtblk_locked_ioctl(struct block_device *bdev, fmode_t mode, -- cgit v1.2.3 From e92ba6d2ec8f83a26deb68dd3c2a195657dfdebe Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Fri, 8 Oct 2010 20:36:15 +0200 Subject: Define _addr_lsb in siginfo_t for mips Define an _addr_lsb field in the mips and ia64 siginfo_ts, following the asm-generic version. This just puts the field over padding. This fixes a compilation problem introduced with a337fda. Cc: ralf@linux-mips.org Cc: tony.luck@intel.com Signed-off-by: Andi Kleen Signed-off-by: Linus Torvalds --- arch/mips/include/asm/siginfo.h | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/mips/include/asm/siginfo.h b/arch/mips/include/asm/siginfo.h index 96e28f18dad..1ca64b4d33d 100644 --- a/arch/mips/include/asm/siginfo.h +++ b/arch/mips/include/asm/siginfo.h @@ -88,6 +88,7 @@ typedef struct siginfo { #ifdef __ARCH_SI_TRAPNO int _trapno; /* TRAP # which caused the signal */ #endif + short _addr_lsb; } _sigfault; /* SIGPOLL, SIGXFSZ (To do ...) */ -- cgit v1.2.3 From 71ebc01d3ad4fa3f20e86603bc31ff2cbc535d95 Mon Sep 17 00:00:00 2001 From: Michal Marek Date: Fri, 8 Oct 2010 16:40:27 +0200 Subject: kconfig: Temporarily disable dependency warnings After fixing a use-after-free bug in kconfig, a 'make defconfig' or 'make allmodconfig' fills the screen with warnings that were not detected before. Given that we are close to the release now, disable the warnings temporarily and deal with them after 2.6.36. Signed-off-by: Michal Marek --- scripts/kconfig/symbol.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/scripts/kconfig/symbol.c b/scripts/kconfig/symbol.c index 943712ca6c0..1f8b305449d 100644 --- a/scripts/kconfig/symbol.c +++ b/scripts/kconfig/symbol.c @@ -350,6 +350,7 @@ void sym_calc_value(struct symbol *sym) } } calc_newval: +#if 0 if (sym->dir_dep.tri == no && sym->rev_dep.tri != no) { fprintf(stderr, "warning: ("); expr_fprint(sym->rev_dep.expr, stderr); @@ -358,6 +359,7 @@ void sym_calc_value(struct symbol *sym) expr_fprint(sym->dir_dep.expr, stderr); fprintf(stderr, ")\n"); } +#endif newval.tri = EXPR_OR(newval.tri, sym->rev_dep.tri); } if (newval.tri == mod && sym_get_type(sym) == S_BOOLEAN) -- cgit v1.2.3 From e9203c988234aa512bd45ca32b52e21c7bbfc414 Mon Sep 17 00:00:00 2001 From: Kyle McMartin Date: Wed, 1 Sep 2010 11:21:30 -0400 Subject: kbuild: fix oldnoconfig to do the right thing Commit 861b4ea4 broke oldnoconfig when removed the oldnoconfig checks on if (input_mode == nonint_oldconfig || input_mode == oldnoconfig) { if (input_mode == nonint_oldconfig && sym->name && !sym_is_choice_value(sym)) { to avoid oldnoconfig chugging through the else stanza. Fix that to restore expected behaviour (which I've confirmed in the Fedora kernel build that the configs end up looking the same.) Signed-off-by: Kyle McMartin Acked-by: Sam Ravnborg Signed-off-by: Michal Marek --- scripts/kconfig/conf.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/scripts/kconfig/conf.c b/scripts/kconfig/conf.c index 5b7c86ea43a..7ef429cd5cb 100644 --- a/scripts/kconfig/conf.c +++ b/scripts/kconfig/conf.c @@ -427,7 +427,7 @@ static void check_conf(struct menu *menu) if (sym->name && !sym_is_choice_value(sym)) { printf("CONFIG_%s\n", sym->name); } - } else { + } else if (input_mode != oldnoconfig) { if (!conf_cnt++) printf(_("*\n* Restart config...\n*\n")); rootEntry = menu_get_parent_menu(menu); -- cgit v1.2.3 From ca047fedd89bbb4b79b61e0656a7b799e4e45e6d Mon Sep 17 00:00:00 2001 From: Aristeu Rozanski Date: Sun, 10 Oct 2010 14:12:33 -0700 Subject: Input: wacom - fix pressure in Cintiq 21UX2 Currently the pressure range in Cintiq 21UX2 is limited to half of the supported. This patch fixes the problem. Signed-off-by: Aristeu Rozanski Acked-by: Ping Cheng CC: stable@kernel.org Signed-off-by: Dmitry Torokhov --- drivers/input/tablet/wacom_wac.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/input/tablet/wacom_wac.c b/drivers/input/tablet/wacom_wac.c index 6e29badb969..47fd7a041c5 100644 --- a/drivers/input/tablet/wacom_wac.c +++ b/drivers/input/tablet/wacom_wac.c @@ -442,8 +442,10 @@ static void wacom_intuos_general(struct wacom_wac *wacom) /* general pen packet */ if ((data[1] & 0xb8) == 0xa0) { t = (data[6] << 2) | ((data[7] >> 6) & 3); - if (features->type >= INTUOS4S && features->type <= INTUOS4L) + if ((features->type >= INTUOS4S && features->type <= INTUOS4L) || + features->type == WACOM_21UX2) { t = (t << 1) | (data[1] & 1); + } input_report_abs(input, ABS_PRESSURE, t); input_report_abs(input, ABS_TILT_X, ((data[7] << 1) & 0x7e) | (data[8] >> 7)); -- cgit v1.2.3 From 6dcbfe4f0b4e17e289d56fa534b7ce5a6b7f63a3 Mon Sep 17 00:00:00 2001 From: Borislav Petkov Date: Fri, 8 Oct 2010 12:08:34 +0200 Subject: x86, AMD, MCE thresholding: Fix the MCi_MISCj iteration order This fixes possible cases of not collecting valid error info in the MCE error thresholding groups on F10h hardware. The current code contains a subtle problem of checking only the Valid bit of MSR0000_0413 (which is MC4_MISC0 - DRAM thresholding group) in its first iteration and breaking out if the bit is cleared. But (!), this MSR contains an offset value, BlkPtr[31:24], which points to the remaining MSRs in this thresholding group which might contain valid information too. But if we bail out only after we checked the valid bit in the first MSR and not the block pointer too, we miss that other information. The thing is, MC4_MISC0[BlkPtr] is not predicated on MCi_STATUS[MiscV] or MC4_MISC0[Valid] and should be checked prior to iterating over the MCI_MISCj thresholding group, irrespective of the MC4_MISC0[Valid] setting. Signed-off-by: Borislav Petkov Cc: Signed-off-by: Ingo Molnar --- arch/x86/kernel/cpu/mcheck/mce_amd.c | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-) diff --git a/arch/x86/kernel/cpu/mcheck/mce_amd.c b/arch/x86/kernel/cpu/mcheck/mce_amd.c index 5e975298fa8..39aaee5c1ab 100644 --- a/arch/x86/kernel/cpu/mcheck/mce_amd.c +++ b/arch/x86/kernel/cpu/mcheck/mce_amd.c @@ -141,6 +141,7 @@ void mce_amd_feature_init(struct cpuinfo_x86 *c) address = (low & MASK_BLKPTR_LO) >> 21; if (!address) break; + address += MCG_XBLK_ADDR; } else ++address; @@ -148,12 +149,8 @@ void mce_amd_feature_init(struct cpuinfo_x86 *c) if (rdmsr_safe(address, &low, &high)) break; - if (!(high & MASK_VALID_HI)) { - if (block) - continue; - else - break; - } + if (!(high & MASK_VALID_HI)) + continue; if (!(high & MASK_CNTP_HI) || (high & MASK_LOCKED_HI)) -- cgit v1.2.3 From 58877679fd393d3ef71aa383031ac7817561463d Mon Sep 17 00:00:00 2001 From: Zachary Amsden Date: Thu, 19 Aug 2010 22:07:18 -1000 Subject: KVM: x86: Fix SVM VMCB reset On reset, VMCB TSC should be set to zero. Instead, code was setting tsc_offset to zero, which passes through the underlying TSC. Signed-off-by: Zachary Amsden Signed-off-by: Marcelo Tosatti --- arch/x86/kvm/svm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c index bc5b9b8d4a3..12b502de136 100644 --- a/arch/x86/kvm/svm.c +++ b/arch/x86/kvm/svm.c @@ -766,7 +766,7 @@ static void init_vmcb(struct vcpu_svm *svm) control->iopm_base_pa = iopm_base; control->msrpm_base_pa = __pa(svm->msrpm); - control->tsc_offset = 0; + control->tsc_offset = 0-native_read_tsc(); control->int_ctl = V_INTR_MASKING_MASK; init_seg(&save->es); -- cgit v1.2.3 From 47008cd887c1836bcadda123ba73e1863de7a6c4 Mon Sep 17 00:00:00 2001 From: Zachary Amsden Date: Thu, 19 Aug 2010 22:07:19 -1000 Subject: KVM: x86: Move TSC reset out of vmcb_init The VMCB is reset whenever we receive a startup IPI, so Linux is setting TSC back to zero happens very late in the boot process and destabilizing the TSC. Instead, just set TSC to zero once at VCPU creation time. Why the separate patch? So git-bisect is your friend. Signed-off-by: Zachary Amsden Signed-off-by: Marcelo Tosatti --- arch/x86/kvm/svm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c index 12b502de136..81ed28cb36e 100644 --- a/arch/x86/kvm/svm.c +++ b/arch/x86/kvm/svm.c @@ -766,7 +766,6 @@ static void init_vmcb(struct vcpu_svm *svm) control->iopm_base_pa = iopm_base; control->msrpm_base_pa = __pa(svm->msrpm); - control->tsc_offset = 0-native_read_tsc(); control->int_ctl = V_INTR_MASKING_MASK; init_seg(&save->es); @@ -902,6 +901,7 @@ static struct kvm_vcpu *svm_create_vcpu(struct kvm *kvm, unsigned int id) svm->vmcb_pa = page_to_pfn(page) << PAGE_SHIFT; svm->asid_generation = 0; init_vmcb(svm); + svm->vmcb->control.tsc_offset = 0-native_read_tsc(); err = fx_init(&svm->vcpu); if (err) -- cgit v1.2.3 From d4cfa4d12f46e2520f4c1d1a92e891ce068b7464 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Sun, 10 Oct 2010 19:33:52 +0200 Subject: OSS: soundcard: locking bug in sound_ioctl() We shouldn't return directly here because we're still holding the &soundcard_mutex. This bug goes all the way back to the start of git. It's strange that no one has complained about it as a runtime bug. CC: stable@kernel.org Signed-off-by: Dan Carpenter Acked-by: Arnd Bergmann Signed-off-by: Takashi Iwai --- sound/oss/soundcard.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/sound/oss/soundcard.c b/sound/oss/soundcard.c index 92aa762ffb7..07f803e6d20 100644 --- a/sound/oss/soundcard.c +++ b/sound/oss/soundcard.c @@ -391,11 +391,11 @@ static long sound_ioctl(struct file *file, unsigned int cmd, unsigned long arg) case SND_DEV_DSP: case SND_DEV_DSP16: case SND_DEV_AUDIO: - return audio_ioctl(dev, file, cmd, p); + ret = audio_ioctl(dev, file, cmd, p); break; case SND_DEV_MIDIN: - return MIDIbuf_ioctl(dev, file, cmd, p); + ret = MIDIbuf_ioctl(dev, file, cmd, p); break; } -- cgit v1.2.3 From 9b2167d59f38691b86430ce559c7fa9d4f973b1f Mon Sep 17 00:00:00 2001 From: Luke Yelavich Date: Wed, 6 Oct 2010 15:45:46 +1100 Subject: ALSA: hda - Add another HP DV6 quirk BugLink: https://bugs.launchpad.net/bugs/653420 Add another HP DV6 notebook (103c:363e) to use STAC_HP_DV5. Signed-off-by: Luke Yelavich Signed-off-by: Takashi Iwai --- sound/pci/hda/patch_sigmatel.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/sound/pci/hda/patch_sigmatel.c b/sound/pci/hda/patch_sigmatel.c index 95148e58026..c16c5ba0fda 100644 --- a/sound/pci/hda/patch_sigmatel.c +++ b/sound/pci/hda/patch_sigmatel.c @@ -1747,6 +1747,8 @@ static struct snd_pci_quirk stac92hd71bxx_cfg_tbl[] = { "HP dv6", STAC_HP_DV5), SND_PCI_QUIRK(PCI_VENDOR_ID_HP, 0x3061, "HP dv6", STAC_HP_DV5), /* HP dv6-1110ax */ + SND_PCI_QUIRK(PCI_VENDOR_ID_HP, 0x363e, + "HP DV6", STAC_HP_DV5), SND_PCI_QUIRK_MASK(PCI_VENDOR_ID_HP, 0xfff0, 0x7010, "HP", STAC_HP_DV5), SND_PCI_QUIRK(PCI_VENDOR_ID_DELL, 0x0233, -- cgit v1.2.3 From 73cf624d029d776a33d0a80c695485b3f9b36231 Mon Sep 17 00:00:00 2001 From: Yinghai Lu Date: Sun, 10 Oct 2010 19:52:15 -0700 Subject: x86, numa: For each node, register the memory blocks actually used Russ reported SGI UV is broken recently. He said: | The SRAT table shows that memory range is spread over two nodes. | | SRAT: Node 0 PXM 0 100000000-800000000 | SRAT: Node 1 PXM 1 800000000-1000000000 | SRAT: Node 0 PXM 0 1000000000-1080000000 | |Previously, the kernel early_node_map[] would show three entries |with the proper node. | |[ 0.000000] 0: 0x00100000 -> 0x00800000 |[ 0.000000] 1: 0x00800000 -> 0x01000000 |[ 0.000000] 0: 0x01000000 -> 0x01080000 | |The problem is recent community kernel early_node_map[] shows |only two entries with the node 0 entry overlapping the node 1 |entry. | | 0: 0x00100000 -> 0x01080000 | 1: 0x00800000 -> 0x01000000 After looking at the changelog, Found out that it has been broken for a while by following commit |commit 8716273caef7f55f39fe4fc6c69c5f9f197f41f1 |Author: David Rientjes |Date: Fri Sep 25 15:20:04 2009 -0700 | | x86: Export srat physical topology Before that commit, register_active_regions() is called for every SRAT memory entry right away. Use nodememblk_range[] instead of nodes[] in order to make sure we capture the actual memory blocks registered with each node. nodes[] contains an extended range which spans all memory regions associated with a node, but that does not mean that all the memory in between are included. Reported-by: Russ Anderson Tested-by: Russ Anderson Signed-off-by: Yinghai Lu LKML-Reference: <4CB27BDF.5000800@kernel.org> Acked-by: David Rientjes Cc: 2.6.33 .34 .35 .36 Signed-off-by: H. Peter Anvin --- arch/x86/mm/srat_64.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/arch/x86/mm/srat_64.c b/arch/x86/mm/srat_64.c index f9897f7a9ef..9c0d0d399c3 100644 --- a/arch/x86/mm/srat_64.c +++ b/arch/x86/mm/srat_64.c @@ -420,9 +420,11 @@ int __init acpi_scan_nodes(unsigned long start, unsigned long end) return -1; } - for_each_node_mask(i, nodes_parsed) - e820_register_active_regions(i, nodes[i].start >> PAGE_SHIFT, - nodes[i].end >> PAGE_SHIFT); + for (i = 0; i < num_node_memblks; i++) + e820_register_active_regions(memblk_nodeid[i], + node_memblk_range[i].start >> PAGE_SHIFT, + node_memblk_range[i].end >> PAGE_SHIFT); + /* for out of order entries in SRAT */ sort_node_map(); if (!nodes_cover_memory(nodes)) { -- cgit v1.2.3 From bcf64aa379fcadd074449cbf0c049da70071b06f Mon Sep 17 00:00:00 2001 From: Paul Fertser Date: Mon, 11 Oct 2010 15:45:35 -0700 Subject: b44: fix carrier detection on bind For carrier detection to work properly when binding the driver with a cable unplugged, netif_carrier_off() should be called after register_netdev(), not before. Signed-off-by: Paul Fertser Signed-off-by: David S. Miller --- drivers/net/b44.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/b44.c b/drivers/net/b44.c index 1e620e287ae..efeffdf9e5f 100644 --- a/drivers/net/b44.c +++ b/drivers/net/b44.c @@ -2170,8 +2170,6 @@ static int __devinit b44_init_one(struct ssb_device *sdev, dev->irq = sdev->irq; SET_ETHTOOL_OPS(dev, &b44_ethtool_ops); - netif_carrier_off(dev); - err = ssb_bus_powerup(sdev->bus, 0); if (err) { dev_err(sdev->dev, @@ -2213,6 +2211,8 @@ static int __devinit b44_init_one(struct ssb_device *sdev, goto err_out_powerdown; } + netif_carrier_off(dev); + ssb_set_drvdata(sdev, dev); /* Chip reset provides power to the b44 MAC & PCI cores, which -- cgit v1.2.3 From b0057c51db66c5f0f38059f242c57d61c4741d89 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Sun, 10 Oct 2010 19:55:52 +0000 Subject: tg3: restore rx_dropped accounting commit 511d22247be7 (tg3: 64 bit stats on all arches), overlooked the rx_dropped accounting. We use a full "struct rtnl_link_stats64" to hold rx_dropped value, but forgot to report it in tg3_get_stats64(). Use an "unsigned long" instead to shrink "struct tg3" by 176 bytes, and report this value to stats readers. Increment rx_dropped counter for oversized frames. Signed-off-by: Eric Dumazet CC: Michael Chan CC: Matt Carlson Acked-by: Matt Carlson Signed-off-by: David S. Miller --- drivers/net/tg3.c | 6 ++++-- drivers/net/tg3.h | 2 +- 2 files changed, 5 insertions(+), 3 deletions(-) diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c index bc3af78a869..1ec4b9e0239 100644 --- a/drivers/net/tg3.c +++ b/drivers/net/tg3.c @@ -4666,7 +4666,7 @@ static int tg3_rx(struct tg3_napi *tnapi, int budget) desc_idx, *post_ptr); drop_it_no_recycle: /* Other statistics kept track of by card. */ - tp->net_stats.rx_dropped++; + tp->rx_dropped++; goto next_pkt; } @@ -4726,7 +4726,7 @@ static int tg3_rx(struct tg3_napi *tnapi, int budget) if (len > (tp->dev->mtu + ETH_HLEN) && skb->protocol != htons(ETH_P_8021Q)) { dev_kfree_skb(skb); - goto next_pkt; + goto drop_it_no_recycle; } if (desc->type_flags & RXD_FLAG_VLAN && @@ -9240,6 +9240,8 @@ static struct rtnl_link_stats64 *tg3_get_stats64(struct net_device *dev, stats->rx_missed_errors = old_stats->rx_missed_errors + get_stat64(&hw_stats->rx_discards); + stats->rx_dropped = tp->rx_dropped; + return stats; } diff --git a/drivers/net/tg3.h b/drivers/net/tg3.h index 4937bd19096..be7ff138a7f 100644 --- a/drivers/net/tg3.h +++ b/drivers/net/tg3.h @@ -2759,7 +2759,7 @@ struct tg3 { /* begin "everything else" cacheline(s) section */ - struct rtnl_link_stats64 net_stats; + unsigned long rx_dropped; struct rtnl_link_stats64 net_stats_prev; struct tg3_ethtool_stats estats; struct tg3_ethtool_stats estats_prev; -- cgit v1.2.3 From 7c5347733dcc4ba0bac0baf86d99fae0561f33b7 Mon Sep 17 00:00:00 2001 From: Eric Paris Date: Mon, 11 Oct 2010 18:13:31 -0400 Subject: fanotify: disable fanotify syscalls This patch disables the fanotify syscalls by just not building them and letting the cond_syscall() statements in kernel/sys_ni.c redirect them to sys_ni_syscall(). It was pointed out by Tvrtko Ursulin that the fanotify interface did not include an explicit prioritization between groups. This is necessary for fanotify to be usable for hierarchical storage management software, as they must get first access to the file, before inotify-like notifiers see the file. This feature can be added in an ABI compatible way in the next release (by using a number of bits in the flags field to carry the info) but it was suggested by Alan that maybe we should just hold off and do it in the next cycle, likely with an (new) explicit argument to the syscall. I don't like this approach best as I know people are already starting to use the current interface, but Alan is all wise and noone on list backed me up with just using what we have. I feel this is needlessly ripping the rug out from under people at the last minute, but if others think it needs to be a new argument it might be the best way forward. Three choices: Go with what we got (and implement the new feature next cycle). Add a new field right now (and implement the new feature next cycle). Wait till next cycle to release the ABI (and implement the new feature next cycle). This is number 3. Signed-off-by: Eric Paris Signed-off-by: Linus Torvalds --- fs/notify/Kconfig | 2 +- include/linux/Kbuild | 1 - 2 files changed, 1 insertion(+), 2 deletions(-) diff --git a/fs/notify/Kconfig b/fs/notify/Kconfig index 22c629eedd8..b388443c3a0 100644 --- a/fs/notify/Kconfig +++ b/fs/notify/Kconfig @@ -3,4 +3,4 @@ config FSNOTIFY source "fs/notify/dnotify/Kconfig" source "fs/notify/inotify/Kconfig" -source "fs/notify/fanotify/Kconfig" +#source "fs/notify/fanotify/Kconfig" diff --git a/include/linux/Kbuild b/include/linux/Kbuild index 626b629429f..4e8ea8c8ec1 100644 --- a/include/linux/Kbuild +++ b/include/linux/Kbuild @@ -118,7 +118,6 @@ header-y += eventpoll.h header-y += ext2_fs.h header-y += fadvise.h header-y += falloc.h -header-y += fanotify.h header-y += fb.h header-y += fcntl.h header-y += fd.h -- cgit v1.2.3 From e1f092102f65e424be40c318a0fab7bb6e34194f Mon Sep 17 00:00:00 2001 From: Pierre BAILLY Date: Tue, 12 Oct 2010 11:39:26 +0200 Subject: HID: Add MULTI_INPUT quirk for turbox/mosart touchscreen This device generates ABS_Z and ABS_RX events, while it should be generating ABS_X and ABS_Y instead. Using the MULTI_INPUT quirk solves this issue. Reference: https://bugs.launchpad.net/ubuntu/+bug/620609/ Signed-off-by: Pierre BAILLY Signed-off-by: Anisse Astier Signed-off-by: Jiri Kosina --- drivers/hid/hid-ids.h | 1 + drivers/hid/usbhid/hid-quirks.c | 1 + 2 files changed, 2 insertions(+) diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h index 765a4f53eb5..a577121e42b 100644 --- a/drivers/hid/hid-ids.h +++ b/drivers/hid/hid-ids.h @@ -503,6 +503,7 @@ #define USB_VENDOR_ID_TURBOX 0x062a #define USB_DEVICE_ID_TURBOX_KEYBOARD 0x0201 +#define USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART 0x7100 #define USB_VENDOR_ID_TWINHAN 0x6253 #define USB_DEVICE_ID_TWINHAN_IR_REMOTE 0x0100 diff --git a/drivers/hid/usbhid/hid-quirks.c b/drivers/hid/usbhid/hid-quirks.c index 70da3181c8a..f0260c699ad 100644 --- a/drivers/hid/usbhid/hid-quirks.c +++ b/drivers/hid/usbhid/hid-quirks.c @@ -36,6 +36,7 @@ static const struct hid_blacklist { { USB_VENDOR_ID_DWAV, USB_DEVICE_ID_EGALAX_TOUCHCONTROLLER, HID_QUIRK_MULTI_INPUT | HID_QUIRK_NOGET }, { USB_VENDOR_ID_DWAV, USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH, HID_QUIRK_MULTI_INPUT }, { USB_VENDOR_ID_MOJO, USB_DEVICE_ID_RETRO_ADAPTER, HID_QUIRK_MULTI_INPUT }, + { USB_VENDOR_ID_TURBOX, USB_DEVICE_ID_TURBOX_TOUCHSCREEN_MOSART, HID_QUIRK_MULTI_INPUT }, { USB_VENDOR_ID_HAPP, USB_DEVICE_ID_UGCI_DRIVING, HID_QUIRK_BADPAD | HID_QUIRK_MULTI_INPUT }, { USB_VENDOR_ID_HAPP, USB_DEVICE_ID_UGCI_FLYING, HID_QUIRK_BADPAD | HID_QUIRK_MULTI_INPUT }, { USB_VENDOR_ID_HAPP, USB_DEVICE_ID_UGCI_FIGHTING, HID_QUIRK_BADPAD | HID_QUIRK_MULTI_INPUT }, -- cgit v1.2.3 From ad0cf3478de8677f720ee06393b3147819568d6a Mon Sep 17 00:00:00 2001 From: John Blackwood Date: Tue, 28 Sep 2010 18:03:11 -0400 Subject: perf: Fix incorrect copy_from_user() usage perf events: repair incorrect use of copy_from_user This makes the perf_event_period() return 0 instead of -EFAULT on success. Signed-off-by: John Blackwood Signed-off-by: Joe Korty Acked-by: Peter Zijlstra LKML-Reference: <20100928220311.GA18145@tsunami.ccur.com> Signed-off-by: Ingo Molnar --- kernel/perf_event.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/kernel/perf_event.c b/kernel/perf_event.c index db5b5606468..b98bed3d818 100644 --- a/kernel/perf_event.c +++ b/kernel/perf_event.c @@ -2202,15 +2202,13 @@ static void perf_event_for_each(struct perf_event *event, static int perf_event_period(struct perf_event *event, u64 __user *arg) { struct perf_event_context *ctx = event->ctx; - unsigned long size; int ret = 0; u64 value; if (!event->attr.sample_period) return -EINVAL; - size = copy_from_user(&value, arg, sizeof(value)); - if (size != sizeof(value)) + if (copy_from_user(&value, arg, sizeof(value))) return -EFAULT; if (!value) -- cgit v1.2.3 From c919b371cb734f42b1130e706ecee262f8d9261d Mon Sep 17 00:00:00 2001 From: Jerome Glisse Date: Tue, 10 Aug 2010 17:41:31 -0400 Subject: drm/radeon/kms: avoid corner case issue with unmappable vram V2 We should not allocate any object into unmappable vram if we have no means to access them which on all GPU means having the CP running and on newer GPU having the blit utility working. This patch limit the vram allocation to visible vram until we have acceleration up and running. Note that it's more than unlikely that we run into any issue related to that as when acceleration is not woring userspace should allocate any object in vram beside front buffer which should fit in visible vram. V2 use real_vram_size as mc_vram_size could be bigger than the actual amount of vram [airlied: fixup r700_cp_stop case] Signed-off-by: Jerome Glisse Signed-off-by: Dave Airlie --- drivers/gpu/drm/radeon/evergreen.c | 1 + drivers/gpu/drm/radeon/r100.c | 3 +++ drivers/gpu/drm/radeon/r600.c | 2 ++ drivers/gpu/drm/radeon/r600_blit_kms.c | 2 ++ drivers/gpu/drm/radeon/radeon.h | 1 + drivers/gpu/drm/radeon/radeon_object.c | 2 +- drivers/gpu/drm/radeon/rs600.c | 1 + drivers/gpu/drm/radeon/rs690.c | 1 + drivers/gpu/drm/radeon/rv770.c | 2 ++ 9 files changed, 14 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/radeon/evergreen.c b/drivers/gpu/drm/radeon/evergreen.c index 79082d4398a..315e1341a94 100644 --- a/drivers/gpu/drm/radeon/evergreen.c +++ b/drivers/gpu/drm/radeon/evergreen.c @@ -1407,6 +1407,7 @@ int evergreen_mc_init(struct radeon_device *rdev) rdev->mc.mc_vram_size = RREG32(CONFIG_MEMSIZE) * 1024 * 1024; rdev->mc.real_vram_size = RREG32(CONFIG_MEMSIZE) * 1024 * 1024; rdev->mc.visible_vram_size = rdev->mc.aper_size; + rdev->mc.active_vram_size = rdev->mc.visible_vram_size; r600_vram_gtt_location(rdev, &rdev->mc); radeon_update_bandwidth_info(rdev); diff --git a/drivers/gpu/drm/radeon/r100.c b/drivers/gpu/drm/radeon/r100.c index e151f16a8f8..e59422320bb 100644 --- a/drivers/gpu/drm/radeon/r100.c +++ b/drivers/gpu/drm/radeon/r100.c @@ -1030,6 +1030,7 @@ int r100_cp_init(struct radeon_device *rdev, unsigned ring_size) return r; } rdev->cp.ready = true; + rdev->mc.active_vram_size = rdev->mc.real_vram_size; return 0; } @@ -1047,6 +1048,7 @@ void r100_cp_fini(struct radeon_device *rdev) void r100_cp_disable(struct radeon_device *rdev) { /* Disable ring */ + rdev->mc.active_vram_size = rdev->mc.visible_vram_size; rdev->cp.ready = false; WREG32(RADEON_CP_CSQ_MODE, 0); WREG32(RADEON_CP_CSQ_CNTL, 0); @@ -2295,6 +2297,7 @@ void r100_vram_init_sizes(struct radeon_device *rdev) /* FIXME we don't use the second aperture yet when we could use it */ if (rdev->mc.visible_vram_size > rdev->mc.aper_size) rdev->mc.visible_vram_size = rdev->mc.aper_size; + rdev->mc.active_vram_size = rdev->mc.visible_vram_size; config_aper_size = RREG32(RADEON_CONFIG_APER_SIZE); if (rdev->flags & RADEON_IS_IGP) { uint32_t tom; diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c index 7a04959ba0e..ba05d3e7d14 100644 --- a/drivers/gpu/drm/radeon/r600.c +++ b/drivers/gpu/drm/radeon/r600.c @@ -1248,6 +1248,7 @@ int r600_mc_init(struct radeon_device *rdev) rdev->mc.mc_vram_size = RREG32(CONFIG_MEMSIZE); rdev->mc.real_vram_size = RREG32(CONFIG_MEMSIZE); rdev->mc.visible_vram_size = rdev->mc.aper_size; + rdev->mc.active_vram_size = rdev->mc.visible_vram_size; r600_vram_gtt_location(rdev, &rdev->mc); if (rdev->flags & RADEON_IS_IGP) { @@ -1917,6 +1918,7 @@ void r600_pciep_wreg(struct radeon_device *rdev, u32 reg, u32 v) */ void r600_cp_stop(struct radeon_device *rdev) { + rdev->mc.active_vram_size = rdev->mc.visible_vram_size; WREG32(R_0086D8_CP_ME_CNTL, S_0086D8_CP_ME_HALT(1)); } diff --git a/drivers/gpu/drm/radeon/r600_blit_kms.c b/drivers/gpu/drm/radeon/r600_blit_kms.c index 9ceb2a1ce79..3473c00781f 100644 --- a/drivers/gpu/drm/radeon/r600_blit_kms.c +++ b/drivers/gpu/drm/radeon/r600_blit_kms.c @@ -532,6 +532,7 @@ int r600_blit_init(struct radeon_device *rdev) memcpy(ptr + rdev->r600_blit.ps_offset, r6xx_ps, r6xx_ps_size * 4); radeon_bo_kunmap(rdev->r600_blit.shader_obj); radeon_bo_unreserve(rdev->r600_blit.shader_obj); + rdev->mc.active_vram_size = rdev->mc.real_vram_size; return 0; } @@ -539,6 +540,7 @@ void r600_blit_fini(struct radeon_device *rdev) { int r; + rdev->mc.active_vram_size = rdev->mc.visible_vram_size; if (rdev->r600_blit.shader_obj == NULL) return; /* If we can't reserve the bo, unref should be enough to destroy diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h index a168d644bf9..9ff38c99a6e 100644 --- a/drivers/gpu/drm/radeon/radeon.h +++ b/drivers/gpu/drm/radeon/radeon.h @@ -344,6 +344,7 @@ struct radeon_mc { * about vram size near mc fb location */ u64 mc_vram_size; u64 visible_vram_size; + u64 active_vram_size; u64 gtt_size; u64 gtt_start; u64 gtt_end; diff --git a/drivers/gpu/drm/radeon/radeon_object.c b/drivers/gpu/drm/radeon/radeon_object.c index 0afd1e62347..b3b5306bb57 100644 --- a/drivers/gpu/drm/radeon/radeon_object.c +++ b/drivers/gpu/drm/radeon/radeon_object.c @@ -69,7 +69,7 @@ void radeon_ttm_placement_from_domain(struct radeon_bo *rbo, u32 domain) u32 c = 0; rbo->placement.fpfn = 0; - rbo->placement.lpfn = 0; + rbo->placement.lpfn = rbo->rdev->mc.active_vram_size >> PAGE_SHIFT; rbo->placement.placement = rbo->placements; rbo->placement.busy_placement = rbo->placements; if (domain & RADEON_GEM_DOMAIN_VRAM) diff --git a/drivers/gpu/drm/radeon/rs600.c b/drivers/gpu/drm/radeon/rs600.c index cc05b230d7e..51d5f7b5ab2 100644 --- a/drivers/gpu/drm/radeon/rs600.c +++ b/drivers/gpu/drm/radeon/rs600.c @@ -693,6 +693,7 @@ void rs600_mc_init(struct radeon_device *rdev) rdev->mc.real_vram_size = RREG32(RADEON_CONFIG_MEMSIZE); rdev->mc.mc_vram_size = rdev->mc.real_vram_size; rdev->mc.visible_vram_size = rdev->mc.aper_size; + rdev->mc.active_vram_size = rdev->mc.visible_vram_size; rdev->mc.igp_sideport_enabled = radeon_atombios_sideport_present(rdev); base = RREG32_MC(R_000004_MC_FB_LOCATION); base = G_000004_MC_FB_START(base) << 16; diff --git a/drivers/gpu/drm/radeon/rs690.c b/drivers/gpu/drm/radeon/rs690.c index 3e3f75718be..4dc2a87ea68 100644 --- a/drivers/gpu/drm/radeon/rs690.c +++ b/drivers/gpu/drm/radeon/rs690.c @@ -157,6 +157,7 @@ void rs690_mc_init(struct radeon_device *rdev) rdev->mc.aper_base = pci_resource_start(rdev->pdev, 0); rdev->mc.aper_size = pci_resource_len(rdev->pdev, 0); rdev->mc.visible_vram_size = rdev->mc.aper_size; + rdev->mc.active_vram_size = rdev->mc.visible_vram_size; base = RREG32_MC(R_000100_MCCFG_FB_LOCATION); base = G_000100_MC_FB_START(base) << 16; rdev->mc.igp_sideport_enabled = radeon_atombios_sideport_present(rdev); diff --git a/drivers/gpu/drm/radeon/rv770.c b/drivers/gpu/drm/radeon/rv770.c index bfa59db374d..9490da70074 100644 --- a/drivers/gpu/drm/radeon/rv770.c +++ b/drivers/gpu/drm/radeon/rv770.c @@ -267,6 +267,7 @@ static void rv770_mc_program(struct radeon_device *rdev) */ void r700_cp_stop(struct radeon_device *rdev) { + rdev->mc.active_vram_size = rdev->mc.visible_vram_size; WREG32(CP_ME_CNTL, (CP_ME_HALT | CP_PFP_HALT)); } @@ -992,6 +993,7 @@ int rv770_mc_init(struct radeon_device *rdev) rdev->mc.mc_vram_size = RREG32(CONFIG_MEMSIZE); rdev->mc.real_vram_size = RREG32(CONFIG_MEMSIZE); rdev->mc.visible_vram_size = rdev->mc.aper_size; + rdev->mc.active_vram_size = rdev->mc.visible_vram_size; r600_vram_gtt_location(rdev, &rdev->mc); radeon_update_bandwidth_info(rdev); -- cgit v1.2.3 From 3555e53b5b4915bc58d08ece6cb2bfa97dda1f9e Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Fri, 8 Oct 2010 12:09:12 -0400 Subject: drm/radeon/kms: leave certain CP int bits enabled These bits are used for internal communication and should be left enabled. This may fix s/r issues on some systems. Signed-off-by: Alex Deucher Signed-off-by: Dave Airlie --- drivers/gpu/drm/radeon/evergreen.c | 2 +- drivers/gpu/drm/radeon/r600.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/radeon/evergreen.c b/drivers/gpu/drm/radeon/evergreen.c index 315e1341a94..a90f0c03b83 100644 --- a/drivers/gpu/drm/radeon/evergreen.c +++ b/drivers/gpu/drm/radeon/evergreen.c @@ -1521,7 +1521,7 @@ void evergreen_disable_interrupt_state(struct radeon_device *rdev) { u32 tmp; - WREG32(CP_INT_CNTL, 0); + WREG32(CP_INT_CNTL, CNTX_BUSY_INT_ENABLE | CNTX_EMPTY_INT_ENABLE); WREG32(GRBM_INT_CNTL, 0); WREG32(INT_MASK + EVERGREEN_CRTC0_REGISTER_OFFSET, 0); WREG32(INT_MASK + EVERGREEN_CRTC1_REGISTER_OFFSET, 0); diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c index ba05d3e7d14..7b65e4efe8a 100644 --- a/drivers/gpu/drm/radeon/r600.c +++ b/drivers/gpu/drm/radeon/r600.c @@ -2912,7 +2912,7 @@ static void r600_disable_interrupt_state(struct radeon_device *rdev) { u32 tmp; - WREG32(CP_INT_CNTL, 0); + WREG32(CP_INT_CNTL, CNTX_BUSY_INT_ENABLE | CNTX_EMPTY_INT_ENABLE); WREG32(GRBM_INT_CNTL, 0); WREG32(DxMODE_INT_MASK, 0); if (ASIC_IS_DCE3(rdev)) { -- cgit v1.2.3 From 40f76d81fb45c1399f93500afa2aed9f84f7dee6 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Thu, 7 Oct 2010 22:38:42 -0400 Subject: drm/radeon/kms: make TV/DFP table info less verbose Make TV standard and DFP table revisions debug only. Signed-off-by: Alex Deucher Signed-off-by: Dave Airlie --- drivers/gpu/drm/radeon/radeon_atombios.c | 18 +++++++++--------- drivers/gpu/drm/radeon/radeon_combios.c | 26 +++++++++++++------------- 2 files changed, 22 insertions(+), 22 deletions(-) diff --git a/drivers/gpu/drm/radeon/radeon_atombios.c b/drivers/gpu/drm/radeon/radeon_atombios.c index 68932ba7b8a..8e43ddae70c 100644 --- a/drivers/gpu/drm/radeon/radeon_atombios.c +++ b/drivers/gpu/drm/radeon/radeon_atombios.c @@ -1558,39 +1558,39 @@ radeon_atombios_get_tv_info(struct radeon_device *rdev) switch (tv_info->ucTV_BootUpDefaultStandard) { case ATOM_TV_NTSC: tv_std = TV_STD_NTSC; - DRM_INFO("Default TV standard: NTSC\n"); + DRM_DEBUG_KMS("Default TV standard: NTSC\n"); break; case ATOM_TV_NTSCJ: tv_std = TV_STD_NTSC_J; - DRM_INFO("Default TV standard: NTSC-J\n"); + DRM_DEBUG_KMS("Default TV standard: NTSC-J\n"); break; case ATOM_TV_PAL: tv_std = TV_STD_PAL; - DRM_INFO("Default TV standard: PAL\n"); + DRM_DEBUG_KMS("Default TV standard: PAL\n"); break; case ATOM_TV_PALM: tv_std = TV_STD_PAL_M; - DRM_INFO("Default TV standard: PAL-M\n"); + DRM_DEBUG_KMS("Default TV standard: PAL-M\n"); break; case ATOM_TV_PALN: tv_std = TV_STD_PAL_N; - DRM_INFO("Default TV standard: PAL-N\n"); + DRM_DEBUG_KMS("Default TV standard: PAL-N\n"); break; case ATOM_TV_PALCN: tv_std = TV_STD_PAL_CN; - DRM_INFO("Default TV standard: PAL-CN\n"); + DRM_DEBUG_KMS("Default TV standard: PAL-CN\n"); break; case ATOM_TV_PAL60: tv_std = TV_STD_PAL_60; - DRM_INFO("Default TV standard: PAL-60\n"); + DRM_DEBUG_KMS("Default TV standard: PAL-60\n"); break; case ATOM_TV_SECAM: tv_std = TV_STD_SECAM; - DRM_INFO("Default TV standard: SECAM\n"); + DRM_DEBUG_KMS("Default TV standard: SECAM\n"); break; default: tv_std = TV_STD_NTSC; - DRM_INFO("Unknown TV standard; defaulting to NTSC\n"); + DRM_DEBUG_KMS("Unknown TV standard; defaulting to NTSC\n"); break; } } diff --git a/drivers/gpu/drm/radeon/radeon_combios.c b/drivers/gpu/drm/radeon/radeon_combios.c index a04b7a6ad95..7b7ea269549 100644 --- a/drivers/gpu/drm/radeon/radeon_combios.c +++ b/drivers/gpu/drm/radeon/radeon_combios.c @@ -913,47 +913,47 @@ radeon_combios_get_tv_info(struct radeon_device *rdev) switch (RBIOS8(tv_info + 7) & 0xf) { case 1: tv_std = TV_STD_NTSC; - DRM_INFO("Default TV standard: NTSC\n"); + DRM_DEBUG_KMS("Default TV standard: NTSC\n"); break; case 2: tv_std = TV_STD_PAL; - DRM_INFO("Default TV standard: PAL\n"); + DRM_DEBUG_KMS("Default TV standard: PAL\n"); break; case 3: tv_std = TV_STD_PAL_M; - DRM_INFO("Default TV standard: PAL-M\n"); + DRM_DEBUG_KMS("Default TV standard: PAL-M\n"); break; case 4: tv_std = TV_STD_PAL_60; - DRM_INFO("Default TV standard: PAL-60\n"); + DRM_DEBUG_KMS("Default TV standard: PAL-60\n"); break; case 5: tv_std = TV_STD_NTSC_J; - DRM_INFO("Default TV standard: NTSC-J\n"); + DRM_DEBUG_KMS("Default TV standard: NTSC-J\n"); break; case 6: tv_std = TV_STD_SCART_PAL; - DRM_INFO("Default TV standard: SCART-PAL\n"); + DRM_DEBUG_KMS("Default TV standard: SCART-PAL\n"); break; default: tv_std = TV_STD_NTSC; - DRM_INFO + DRM_DEBUG_KMS ("Unknown TV standard; defaulting to NTSC\n"); break; } switch ((RBIOS8(tv_info + 9) >> 2) & 0x3) { case 0: - DRM_INFO("29.498928713 MHz TV ref clk\n"); + DRM_DEBUG_KMS("29.498928713 MHz TV ref clk\n"); break; case 1: - DRM_INFO("28.636360000 MHz TV ref clk\n"); + DRM_DEBUG_KMS("28.636360000 MHz TV ref clk\n"); break; case 2: - DRM_INFO("14.318180000 MHz TV ref clk\n"); + DRM_DEBUG_KMS("14.318180000 MHz TV ref clk\n"); break; case 3: - DRM_INFO("27.000000000 MHz TV ref clk\n"); + DRM_DEBUG_KMS("27.000000000 MHz TV ref clk\n"); break; default: break; @@ -1324,7 +1324,7 @@ bool radeon_legacy_get_tmds_info_from_combios(struct radeon_encoder *encoder, if (tmds_info) { ver = RBIOS8(tmds_info); - DRM_INFO("DFP table revision: %d\n", ver); + DRM_DEBUG_KMS("DFP table revision: %d\n", ver); if (ver == 3) { n = RBIOS8(tmds_info + 5) + 1; if (n > 4) @@ -1408,7 +1408,7 @@ bool radeon_legacy_get_ext_tmds_info_from_combios(struct radeon_encoder *encoder offset = combios_get_table_offset(dev, COMBIOS_EXT_TMDS_INFO_TABLE); if (offset) { ver = RBIOS8(offset); - DRM_INFO("External TMDS Table revision: %d\n", ver); + DRM_DEBUG_KMS("External TMDS Table revision: %d\n", ver); tmds->slave_addr = RBIOS8(offset + 4 + 2); tmds->slave_addr >>= 1; /* 7 bit addressing */ gpio = RBIOS8(offset + 4 + 3); -- cgit v1.2.3 From d31dba58480c3cdd458f449261d72ecd15287792 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Mon, 11 Oct 2010 12:41:32 -0400 Subject: drm/radeon/kms: fix bad cast/shift in evergreen.c Missing parens. fixes: https://bugs.freedesktop.org/show_bug.cgi?id=30718 Reported-by: Dave Gilbert Signed-off-by: Alex Deucher Reviewed-by: Matt Turner Cc: stable@kernel.org Signed-off-by: Dave Airlie --- drivers/gpu/drm/radeon/evergreen.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/radeon/evergreen.c b/drivers/gpu/drm/radeon/evergreen.c index a90f0c03b83..2f93d46ae69 100644 --- a/drivers/gpu/drm/radeon/evergreen.c +++ b/drivers/gpu/drm/radeon/evergreen.c @@ -1137,7 +1137,7 @@ static void evergreen_gpu_init(struct radeon_device *rdev) WREG32(RCU_IND_INDEX, 0x203); efuse_straps_3 = RREG32(RCU_IND_DATA); - efuse_box_bit_127_124 = (u8)(efuse_straps_3 & 0xF0000000) >> 28; + efuse_box_bit_127_124 = (u8)((efuse_straps_3 & 0xF0000000) >> 28); switch(efuse_box_bit_127_124) { case 0x0: -- cgit v1.2.3 From a8c051f0c8d2f81c665e820f765aaddf86161640 Mon Sep 17 00:00:00 2001 From: Jean Delvare Date: Fri, 8 Oct 2010 14:34:49 +0200 Subject: drm/radeon/kms: Silent spurious error message I see the following error message in my kernel log from time to time: radeon 0000:07:00.0: ffff88007c334000 reserve failed for wait radeon 0000:07:00.0: ffff88007c334000 reserve failed for wait After investigation, it turns out that there's nothing to be afraid of and everything works as intended. So remove the spurious log message. Signed-off-by: Jean Delvare Reviewed-by: Jerome Glisse Signed-off-by: Dave Airlie --- drivers/gpu/drm/radeon/radeon_object.h | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) diff --git a/drivers/gpu/drm/radeon/radeon_object.h b/drivers/gpu/drm/radeon/radeon_object.h index 353998dc2c0..3481bc7f6f5 100644 --- a/drivers/gpu/drm/radeon/radeon_object.h +++ b/drivers/gpu/drm/radeon/radeon_object.h @@ -124,11 +124,8 @@ static inline int radeon_bo_wait(struct radeon_bo *bo, u32 *mem_type, int r; r = ttm_bo_reserve(&bo->tbo, true, no_wait, false, 0); - if (unlikely(r != 0)) { - if (r != -ERESTARTSYS) - dev_err(bo->rdev->dev, "%p reserve failed for wait\n", bo); + if (unlikely(r != 0)) return r; - } spin_lock(&bo->tbo.lock); if (mem_type) *mem_type = bo->tbo.mem.mem_type; -- cgit v1.2.3 From c1e028ef40b8d6943b767028ba17d4f2ba020edb Mon Sep 17 00:00:00 2001 From: Deng-Cheng Zhu Date: Tue, 12 Oct 2010 19:33:33 +0800 Subject: perf, MIPS: Support cross compiling of tools/perf for MIPS Changes: v4: Fix the cosmetic issue of redundant dot-ops v3: Change rmb() to use SYNC v2: Include mips unistd.h and define rmb()/cpu_relax() in tools/perf/perf.h Signed-off-by: Deng-Cheng Zhu Acked-by: Ralf Baechle Cc: David Daney Cc: Peter Zijlstra Cc: Arnaldo Carvalho de Melo Cc: Frederic Weisbecker Cc: Paul Mackerras Signed-off-by: Ingo Molnar --- tools/perf/perf.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/tools/perf/perf.h b/tools/perf/perf.h index ef7aa0a0c52..95aaf565c70 100644 --- a/tools/perf/perf.h +++ b/tools/perf/perf.h @@ -73,6 +73,18 @@ void get_term_dimensions(struct winsize *ws); #define cpu_relax() asm volatile("":::"memory") #endif +#ifdef __mips__ +#include "../../arch/mips/include/asm/unistd.h" +#define rmb() asm volatile( \ + ".set mips2\n\t" \ + "sync\n\t" \ + ".set mips0" \ + : /* no output */ \ + : /* no input */ \ + : "memory") +#define cpu_relax() asm volatile("" ::: "memory") +#endif + #include #include #include -- cgit v1.2.3 From 6d97e55f7172303082850c1de085d06fc1e57d17 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Mon, 11 Oct 2010 19:24:19 +0200 Subject: vhost: fix return code for log_access_ok() access_ok() returns 1 if it's OK otherwise it should return 0. Signed-off-by: Dan Carpenter Signed-off-by: Michael S. Tsirkin --- drivers/vhost/vhost.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c index dd3d6f7406f..158004e46e5 100644 --- a/drivers/vhost/vhost.c +++ b/drivers/vhost/vhost.c @@ -371,7 +371,7 @@ static int log_access_ok(void __user *log_base, u64 addr, unsigned long sz) /* Make sure 64 bit math will not overflow. */ if (a > ULONG_MAX - (unsigned long)log_base || a + (unsigned long)log_base > ULONG_MAX) - return -EFAULT; + return 0; return access_ok(VERIFY_WRITE, log_base + a, (sz + VHOST_PAGE_SIZE * 8 - 1) / VHOST_PAGE_SIZE / 8); -- cgit v1.2.3 From d01343244abdedd18303d0323b518ed9cdcb1988 Mon Sep 17 00:00:00 2001 From: Steven Rostedt Date: Tue, 12 Oct 2010 12:06:43 -0400 Subject: ring-buffer: Fix typo of time extends per page Time stamps for the ring buffer are created by the difference between two events. Each page of the ring buffer holds a full 64 bit timestamp. Each event has a 27 bit delta stamp from the last event. The unit of time is nanoseconds, so 27 bits can hold ~134 milliseconds. If two events happen more than 134 milliseconds apart, a time extend is inserted to add more bits for the delta. The time extend has 59 bits, which is good for ~18 years. Currently the time extend is committed separately from the event. If an event is discarded before it is committed, due to filtering, the time extend still exists. If all events are being filtered, then after ~134 milliseconds a new time extend will be added to the buffer. This can only happen till the end of the page. Since each page holds a full timestamp, there is no reason to add a time extend to the beginning of a page. Time extends can only fill a page that has actual data at the beginning, so there is no fear that time extends will fill more than a page without any data. When reading an event, a loop is made to skip over time extends since they are only used to maintain the time stamp and are never given to the caller. As a paranoid check to prevent the loop running forever, with the knowledge that time extends may only fill a page, a check is made that tests the iteration of the loop, and if the iteration is more than the number of time extends that can fit in a page a warning is printed and the ring buffer is disabled (all of ftrace is also disabled with it). There is another event type that is called a TIMESTAMP which can hold 64 bits of data in the theoretical case that two events happen 18 years apart. This code has not been implemented, but the name of this event exists, as well as the structure for it. The size of a TIMESTAMP is 16 bytes, where as a time extend is only 8 bytes. The macro used to calculate how many time extends can fit on a page used the TIMESTAMP size instead of the time extend size cutting the amount in half. The following test case can easily trigger the warning since we only need to have half the page filled with time extends to trigger the warning: # cd /sys/kernel/debug/tracing/ # echo function > current_tracer # echo 'common_pid < 0' > events/ftrace/function/filter # echo > trace # echo 1 > trace_marker # sleep 120 # cat trace Enabling the function tracer and then setting the filter to only trace functions where the process id is negative (no events), then clearing the trace buffer to ensure that we have nothing in the buffer, then write to trace_marker to add an event to the beginning of a page, sleep for 2 minutes (only 35 seconds is probably needed, but this guarantees the bug), and then finally reading the trace which will trigger the bug. This patch fixes the typo and prevents the false positive of that warning. Reported-by: Hans J. Koch Tested-by: Hans J. Koch Cc: Thomas Gleixner Cc: Stable Kernel Signed-off-by: Steven Rostedt --- kernel/trace/ring_buffer.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c index 492197e2f86..bca96377fd4 100644 --- a/kernel/trace/ring_buffer.c +++ b/kernel/trace/ring_buffer.c @@ -405,7 +405,7 @@ static inline int test_time_stamp(u64 delta) #define BUF_MAX_DATA_SIZE (BUF_PAGE_SIZE - (sizeof(u32) * 2)) /* Max number of timestamps that can fit on a page */ -#define RB_TIMESTAMPS_PER_PAGE (BUF_PAGE_SIZE / RB_LEN_TIME_STAMP) +#define RB_TIMESTAMPS_PER_PAGE (BUF_PAGE_SIZE / RB_LEN_TIME_EXTEND) int ring_buffer_print_page_header(struct trace_seq *s) { -- cgit v1.2.3 From 93055c31045a2d5599ec613a0c6cdcefc481a460 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Mon, 11 Oct 2010 21:41:35 +0200 Subject: ps3disk: passing wrong variable to bvec_kunmap_irq() This should pass "buf" to bvec_kunmap_irq() instead of "bv". The api is like kmap_atomic() instead of kmap(). Signed-off-by: Dan Carpenter Acked-by: Geoff Levand Signed-off-by: Jens Axboe --- drivers/block/ps3disk.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/block/ps3disk.c b/drivers/block/ps3disk.c index e9da874d041..03688c2da31 100644 --- a/drivers/block/ps3disk.c +++ b/drivers/block/ps3disk.c @@ -113,7 +113,7 @@ static void ps3disk_scatter_gather(struct ps3_storage_device *dev, memcpy(buf, dev->bounce_buf+offset, size); offset += size; flush_kernel_dcache_page(bvec->bv_page); - bvec_kunmap_irq(bvec, &flags); + bvec_kunmap_irq(buf, &flags); i++; } } -- cgit v1.2.3 From 10d48b3934940c178635413b5128c33bc17abe1d Mon Sep 17 00:00:00 2001 From: Mika Westerberg Date: Tue, 12 Oct 2010 10:37:59 +0100 Subject: ARM: 6440/1: ep93xx: DMA: fix channel_disable When channel_disable() is called, it disables per channel interrupts and waits until channels state becomes STATE_STALL, and then disables the channel. Now, if the DMA transfer is disabled while the channel is in STATE_NEXT we will not wait anything and disable the channel immediately. This seems to cause weird data corruption for example in audio transfers. Fix is to wait while we are in STATE_NEXT or STATE_ON and only then disable the channel. Signed-off-by: Mika Westerberg Acked-by: Ryan Mallon Signed-off-by: Russell King --- arch/arm/mach-ep93xx/dma-m2p.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/mach-ep93xx/dma-m2p.c b/arch/arm/mach-ep93xx/dma-m2p.c index 8904ca4e2e2..a696d354b1f 100644 --- a/arch/arm/mach-ep93xx/dma-m2p.c +++ b/arch/arm/mach-ep93xx/dma-m2p.c @@ -276,7 +276,7 @@ static void channel_disable(struct m2p_channel *ch) v &= ~(M2P_CONTROL_STALL_IRQ_EN | M2P_CONTROL_NFB_IRQ_EN); m2p_set_control(ch, v); - while (m2p_channel_state(ch) == STATE_ON) + while (m2p_channel_state(ch) >= STATE_ON) cpu_relax(); m2p_set_control(ch, 0x0); -- cgit v1.2.3 From 06c10884486a63a1e4ff657aaa51e848e64b9dc3 Mon Sep 17 00:00:00 2001 From: Russell King Date: Wed, 13 Oct 2010 00:15:25 +0100 Subject: ARM: relax ioremap prohibition (309caa9) for -final and -stable ... but produce a big warning about the problem as encouragement for people to fix their drivers. Signed-off-by: Russell King --- arch/arm/mm/ioremap.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/arch/arm/mm/ioremap.c b/arch/arm/mm/ioremap.c index ab506272b2d..17e7b0b57e4 100644 --- a/arch/arm/mm/ioremap.c +++ b/arch/arm/mm/ioremap.c @@ -204,8 +204,12 @@ void __iomem * __arm_ioremap_pfn_caller(unsigned long pfn, /* * Don't allow RAM to be mapped - this causes problems with ARMv6+ */ - if (WARN_ON(pfn_valid(pfn))) - return NULL; + if (pfn_valid(pfn)) { + printk(KERN_WARNING "BUG: Your driver calls ioremap() on system memory. This leads\n" + KERN_WARNING "to architecturally unpredictable behaviour on ARMv6+, and ioremap()\n" + KERN_WARNING "will fail in the next kernel release. Please fix your driver.\n"); + WARN_ON(1); + } type = get_mem_type(mtype); if (!type) -- cgit v1.2.3 From 272036edb77e5967c175ac48b8c88e9b3358285f Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Fran=C3=A7ois=20Jaouen?= Date: Wed, 13 Oct 2010 10:47:32 +0200 Subject: HID: Add Cando touch screen 15.6-inch product id This add the product id of the touch screen found on ACER Aspire 5738PZ. Works with hid-cando driver. Signed-off-by: Francois Jaouen Signed-off-by: Jiri Kosina --- drivers/hid/hid-cando.c | 2 ++ drivers/hid/hid-core.c | 1 + drivers/hid/hid-ids.h | 1 + 3 files changed, 4 insertions(+) diff --git a/drivers/hid/hid-cando.c b/drivers/hid/hid-cando.c index 4267a6fdc27..5925bdcd417 100644 --- a/drivers/hid/hid-cando.c +++ b/drivers/hid/hid-cando.c @@ -237,6 +237,8 @@ static const struct hid_device_id cando_devices[] = { USB_DEVICE_ID_CANDO_MULTI_TOUCH) }, { HID_USB_DEVICE(USB_VENDOR_ID_CANDO, USB_DEVICE_ID_CANDO_MULTI_TOUCH_11_6) }, + { HID_USB_DEVICE(USB_VENDOR_ID_CANDO, + USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) }, { } }; MODULE_DEVICE_TABLE(hid, cando_devices); diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c index 3f729248602..a0dea3d1296 100644 --- a/drivers/hid/hid-core.c +++ b/drivers/hid/hid-core.c @@ -1292,6 +1292,7 @@ static const struct hid_device_id hid_blacklist[] = { { HID_USB_DEVICE(USB_VENDOR_ID_BTC, USB_DEVICE_ID_BTC_EMPREX_REMOTE_2) }, { HID_USB_DEVICE(USB_VENDOR_ID_CANDO, USB_DEVICE_ID_CANDO_MULTI_TOUCH) }, { HID_USB_DEVICE(USB_VENDOR_ID_CANDO, USB_DEVICE_ID_CANDO_MULTI_TOUCH_11_6) }, + { HID_USB_DEVICE(USB_VENDOR_ID_CANDO, USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6) }, { HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION) }, { HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION_SOLAR) }, { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_TACTICAL_PAD) }, diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h index a577121e42b..c5ae5f1545b 100644 --- a/drivers/hid/hid-ids.h +++ b/drivers/hid/hid-ids.h @@ -134,6 +134,7 @@ #define USB_VENDOR_ID_CANDO 0x2087 #define USB_DEVICE_ID_CANDO_MULTI_TOUCH 0x0a01 #define USB_DEVICE_ID_CANDO_MULTI_TOUCH_11_6 0x0b03 +#define USB_DEVICE_ID_CANDO_MULTI_TOUCH_15_6 0x0f01 #define USB_VENDOR_ID_CH 0x068e #define USB_DEVICE_ID_CH_PRO_PEDALS 0x00f2 -- cgit v1.2.3 From 6fcc040f02d281c7e9563127358a77ce2bbfe284 Mon Sep 17 00:00:00 2001 From: Greg Ungerer Date: Mon, 11 Oct 2010 21:03:05 +0000 Subject: net: allow FEC driver to use fixed PHY support At least one board using the FEC driver does not have a conventional PHY attached to it, it is directly connected to a somewhat simple ethernet switch (the board is the SnapGear/LITE, and the attached 4-port ethernet switch is a RealTek RTL8305). This switch does not present the usual register interface of a PHY, it presents nothing. So a PHY scan will find nothing - it finds ID's of 0 for each PHY on the attached MII bus. After the FEC driver was changed to use phylib for supporting PHYs it no longer works on this particular board/switch setup. Add code support to use a fixed phy if no PHY is found on the MII bus. This is based on the way the cpmac.c driver solved this same problem. Signed-off-by: Greg Ungerer Signed-off-by: David S. Miller --- drivers/net/fec.c | 41 +++++++++++++++++++++++++++-------------- 1 file changed, 27 insertions(+), 14 deletions(-) diff --git a/drivers/net/fec.c b/drivers/net/fec.c index e83f67d22fe..cce32d43175 100644 --- a/drivers/net/fec.c +++ b/drivers/net/fec.c @@ -678,24 +678,37 @@ static int fec_enet_mii_probe(struct net_device *dev) { struct fec_enet_private *fep = netdev_priv(dev); struct phy_device *phy_dev = NULL; - int ret; + char mdio_bus_id[MII_BUS_ID_SIZE]; + char phy_name[MII_BUS_ID_SIZE + 3]; + int phy_id; fep->phy_dev = NULL; - /* find the first phy */ - phy_dev = phy_find_first(fep->mii_bus); - if (!phy_dev) { - printk(KERN_ERR "%s: no PHY found\n", dev->name); - return -ENODEV; + /* check for attached phy */ + for (phy_id = 0; (phy_id < PHY_MAX_ADDR); phy_id++) { + if ((fep->mii_bus->phy_mask & (1 << phy_id))) + continue; + if (fep->mii_bus->phy_map[phy_id] == NULL) + continue; + if (fep->mii_bus->phy_map[phy_id]->phy_id == 0) + continue; + strncpy(mdio_bus_id, fep->mii_bus->id, MII_BUS_ID_SIZE); + break; } - /* attach the mac to the phy */ - ret = phy_connect_direct(dev, phy_dev, - &fec_enet_adjust_link, 0, - PHY_INTERFACE_MODE_MII); - if (ret) { - printk(KERN_ERR "%s: Could not attach to PHY\n", dev->name); - return ret; + if (phy_id >= PHY_MAX_ADDR) { + printk(KERN_INFO "%s: no PHY, assuming direct connection " + "to switch\n", dev->name); + strncpy(mdio_bus_id, "0", MII_BUS_ID_SIZE); + phy_id = 0; + } + + snprintf(phy_name, MII_BUS_ID_SIZE, PHY_ID_FMT, mdio_bus_id, phy_id); + phy_dev = phy_connect(dev, phy_name, &fec_enet_adjust_link, 0, + PHY_INTERFACE_MODE_MII); + if (IS_ERR(phy_dev)) { + printk(KERN_ERR "%s: could not attach to PHY\n", dev->name); + return PTR_ERR(phy_dev); } /* mask with MAC supported features */ @@ -738,7 +751,7 @@ static int fec_enet_mii_init(struct platform_device *pdev) fep->mii_bus->read = fec_enet_mdio_read; fep->mii_bus->write = fec_enet_mdio_write; fep->mii_bus->reset = fec_enet_mdio_reset; - snprintf(fep->mii_bus->id, MII_BUS_ID_SIZE, "%x", pdev->id); + snprintf(fep->mii_bus->id, MII_BUS_ID_SIZE, "%x", pdev->id + 1); fep->mii_bus->priv = fep; fep->mii_bus->parent = &pdev->dev; -- cgit v1.2.3 From b1e86db1de2e8bc2be9fb94fae3451c2a776e8c1 Mon Sep 17 00:00:00 2001 From: "J. Bruce Fields" Date: Wed, 13 Oct 2010 14:46:17 -0400 Subject: nfsd: fix BUG at fs/nfsd/nfsfh.h:199 on unlink As of commit 43a9aa64a2f4330a9cb59aaf5c5636566bce067c "NFSD: Fill in WCC data for REMOVE, RMDIR, MKNOD, and MKDIR", we sometimes call fh_unlock on a filehandle that isn't fully initialized. We should fix up the callers, but as a quick fix it is also sufficient just to remove this assertion. Reported-by: Marius Tolzmann Cc: Chuck Lever Signed-off-by: J. Bruce Fields --- fs/nfsd/nfsfh.h | 2 -- 1 file changed, 2 deletions(-) diff --git a/fs/nfsd/nfsfh.h b/fs/nfsd/nfsfh.h index cdfb8c6a420..c16f8d8331b 100644 --- a/fs/nfsd/nfsfh.h +++ b/fs/nfsd/nfsfh.h @@ -196,8 +196,6 @@ fh_lock(struct svc_fh *fhp) static inline void fh_unlock(struct svc_fh *fhp) { - BUG_ON(!fhp->fh_dentry); - if (fhp->fh_locked) { fill_post_wcc(fhp); mutex_unlock(&fhp->fh_dentry->d_inode->i_mutex); -- cgit v1.2.3 From 71085ce8285dc5f3011694f6ba7259201135c6d6 Mon Sep 17 00:00:00 2001 From: Breno Leitao Date: Thu, 7 Oct 2010 13:17:33 +0000 Subject: ehea: Fix a checksum issue on the receive path Currently we set all skbs with CHECKSUM_UNNECESSARY, even those whose protocol we don't know. This patch just add the CHECKSUM_COMPLETE tag for non TCP/UDP packets. Reported-by: Eric Dumazet Signed-off-by: Breno Leitao Signed-off-by: Jay Vosburgh Signed-off-by: David S. Miller --- drivers/net/ehea/ehea_main.c | 9 ++++++++- drivers/net/ehea/ehea_qmr.h | 1 + 2 files changed, 9 insertions(+), 1 deletion(-) diff --git a/drivers/net/ehea/ehea_main.c b/drivers/net/ehea/ehea_main.c index a333b42111b..6372610ed24 100644 --- a/drivers/net/ehea/ehea_main.c +++ b/drivers/net/ehea/ehea_main.c @@ -533,8 +533,15 @@ static inline void ehea_fill_skb(struct net_device *dev, int length = cqe->num_bytes_transfered - 4; /*remove CRC */ skb_put(skb, length); - skb->ip_summed = CHECKSUM_UNNECESSARY; skb->protocol = eth_type_trans(skb, dev); + + /* The packet was not an IPV4 packet so a complemented checksum was + calculated. The value is found in the Internet Checksum field. */ + if (cqe->status & EHEA_CQE_BLIND_CKSUM) { + skb->ip_summed = CHECKSUM_COMPLETE; + skb->csum = csum_unfold(~cqe->inet_checksum_value); + } else + skb->ip_summed = CHECKSUM_UNNECESSARY; } static inline struct sk_buff *get_skb_by_index(struct sk_buff **skb_array, diff --git a/drivers/net/ehea/ehea_qmr.h b/drivers/net/ehea/ehea_qmr.h index f608a6c54af..38104734a3b 100644 --- a/drivers/net/ehea/ehea_qmr.h +++ b/drivers/net/ehea/ehea_qmr.h @@ -150,6 +150,7 @@ struct ehea_rwqe { #define EHEA_CQE_TYPE_RQ 0x60 #define EHEA_CQE_STAT_ERR_MASK 0x700F #define EHEA_CQE_STAT_FAT_ERR_MASK 0xF +#define EHEA_CQE_BLIND_CKSUM 0x8000 #define EHEA_CQE_STAT_ERR_TCP 0x4000 #define EHEA_CQE_STAT_ERR_IP 0x2000 #define EHEA_CQE_STAT_ERR_CRC 0x1000 -- cgit v1.2.3 From c50a898fd4e736623ee175920db056194e0bb483 Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Wed, 13 Oct 2010 15:43:10 -0700 Subject: ioat2: fix performance regression Commit 0793448 "DMAENGINE: generic channel status v2" changed the interface for how dma channel progress is retrieved. It inadvertently exported an internal helper function ioat_tx_status() instead of ioat_dma_tx_status(). The latter polls the hardware to get the latest completion state, while the helper just evaluates the current state without touching hardware. The effect is that we end up waiting for completion timeouts or descriptor allocation errors before the completion state is updated. iperf (before fix): [SUM] 0.0-41.3 sec 364 MBytes 73.9 Mbits/sec iperf (after fix): [SUM] 0.0- 4.5 sec 499 MBytes 940 Mbits/sec This is a regression starting with 2.6.35. Cc: Cc: Dave Jiang Cc: Jesse Brandeburg Cc: Linus Walleij Cc: Maciej Sosnowski Reported-by: Richard Scobie Signed-off-by: Dan Williams --- drivers/dma/ioat/dma_v2.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/dma/ioat/dma_v2.c b/drivers/dma/ioat/dma_v2.c index 216f9d383b5..effd140fc04 100644 --- a/drivers/dma/ioat/dma_v2.c +++ b/drivers/dma/ioat/dma_v2.c @@ -879,7 +879,7 @@ int __devinit ioat2_dma_probe(struct ioatdma_device *device, int dca) dma->device_issue_pending = ioat2_issue_pending; dma->device_alloc_chan_resources = ioat2_alloc_chan_resources; dma->device_free_chan_resources = ioat2_free_chan_resources; - dma->device_tx_status = ioat_tx_status; + dma->device_tx_status = ioat_dma_tx_status; err = ioat_probe(device); if (err) -- cgit v1.2.3 From f13d4f979c518119bba5439dd2364d76d31dcd3f Mon Sep 17 00:00:00 2001 From: Salman Qazi Date: Tue, 12 Oct 2010 07:25:19 -0700 Subject: hrtimer: Preserve timer state in remove_hrtimer() The race is described as follows: CPU X CPU Y remove_hrtimer // state & QUEUED == 0 timer->state = CALLBACK unlock timer base timer->f(n) //very long hrtimer_start lock timer base remove_hrtimer // no effect hrtimer_enqueue timer->state = CALLBACK | QUEUED unlock timer base hrtimer_start lock timer base remove_hrtimer mode = INACTIVE // CALLBACK bit lost! switch_hrtimer_base CALLBACK bit not set: timer->base changes to a different CPU. lock this CPU's timer base The bug was introduced with commit ca109491f (hrtimer: removing all ur callback modes) in 2.6.29 [ tglx: Feed new state via local variable and add a comment. ] Signed-off-by: Salman Qazi Cc: akpm@linux-foundation.org Cc: Peter Zijlstra LKML-Reference: <20101012142351.8485.21823.stgit@dungbeetle.mtv.corp.google.com> Signed-off-by: Thomas Gleixner Cc: stable@kernel.org --- kernel/hrtimer.c | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-) diff --git a/kernel/hrtimer.c b/kernel/hrtimer.c index 1decafbb6b1..72206cf5c6c 100644 --- a/kernel/hrtimer.c +++ b/kernel/hrtimer.c @@ -931,6 +931,7 @@ static inline int remove_hrtimer(struct hrtimer *timer, struct hrtimer_clock_base *base) { if (hrtimer_is_queued(timer)) { + unsigned long state; int reprogram; /* @@ -944,8 +945,13 @@ remove_hrtimer(struct hrtimer *timer, struct hrtimer_clock_base *base) debug_deactivate(timer); timer_stats_hrtimer_clear_start_info(timer); reprogram = base->cpu_base == &__get_cpu_var(hrtimer_bases); - __remove_hrtimer(timer, base, HRTIMER_STATE_INACTIVE, - reprogram); + /* + * We must preserve the CALLBACK state flag here, + * otherwise we could move the timer base in + * switch_hrtimer_base. + */ + state = timer->state & HRTIMER_STATE_CALLBACK; + __remove_hrtimer(timer, base, state, reprogram); return 1; } return 0; @@ -1231,6 +1237,9 @@ static void __run_hrtimer(struct hrtimer *timer, ktime_t *now) BUG_ON(timer->state != HRTIMER_STATE_CALLBACK); enqueue_hrtimer(timer, base); } + + WARN_ON_ONCE(!(timer->state & HRTIMER_STATE_CALLBACK)); + timer->state &= ~HRTIMER_STATE_CALLBACK; } -- cgit v1.2.3 From 0eead9ab41da33644ae2c97c57ad03da636a0422 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Thu, 14 Oct 2010 10:57:40 -0700 Subject: Don't dump task struct in a.out core-dumps akiphie points out that a.out core-dumps have that odd task struct dumping that was never used and was never really a good idea (it goes back into the mists of history, probably the original core-dumping code). Just remove it. Also do the access_ok() check on dump_write(). It probably doesn't matter (since normal filesystems all seem to do it anyway), but he points out that it's normally done by the VFS layer, so ... [ I suspect that we should possibly do "vfs_write()" instead of calling ->write directly. That also does the whole fsnotify and write statistics thing, which may or may not be a good idea. ] And just to be anal, do this all for the x86-64 32-bit a.out emulation code too, even though it's not enabled (and won't currently even compile) Reported-by: akiphie Signed-off-by: Linus Torvalds --- arch/x86/ia32/ia32_aout.c | 22 +++++----------------- fs/binfmt_aout.c | 4 ---- include/linux/coredump.h | 2 +- 3 files changed, 6 insertions(+), 22 deletions(-) diff --git a/arch/x86/ia32/ia32_aout.c b/arch/x86/ia32/ia32_aout.c index 0350311906a..2d93bdbc9ac 100644 --- a/arch/x86/ia32/ia32_aout.c +++ b/arch/x86/ia32/ia32_aout.c @@ -34,7 +34,7 @@ #include #undef WARN_OLD -#undef CORE_DUMP /* probably broken */ +#undef CORE_DUMP /* definitely broken */ static int load_aout_binary(struct linux_binprm *, struct pt_regs *regs); static int load_aout_library(struct file *); @@ -131,21 +131,15 @@ static void set_brk(unsigned long start, unsigned long end) * macros to write out all the necessary info. */ -static int dump_write(struct file *file, const void *addr, int nr) -{ - return file->f_op->write(file, addr, nr, &file->f_pos) == nr; -} +#include #define DUMP_WRITE(addr, nr) \ if (!dump_write(file, (void *)(addr), (nr))) \ goto end_coredump; -#define DUMP_SEEK(offset) \ - if (file->f_op->llseek) { \ - if (file->f_op->llseek(file, (offset), 0) != (offset)) \ - goto end_coredump; \ - } else \ - file->f_pos = (offset) +#define DUMP_SEEK(offset) \ + if (!dump_seek(file, offset)) \ + goto end_coredump; #define START_DATA() (u.u_tsize << PAGE_SHIFT) #define START_STACK(u) (u.start_stack) @@ -217,12 +211,6 @@ static int aout_core_dump(long signr, struct pt_regs *regs, struct file *file, dump_size = dump.u_ssize << PAGE_SHIFT; DUMP_WRITE(dump_start, dump_size); } - /* - * Finally dump the task struct. Not be used by gdb, but - * could be useful - */ - set_fs(KERNEL_DS); - DUMP_WRITE(current, sizeof(*current)); end_coredump: set_fs(fs); return has_dumped; diff --git a/fs/binfmt_aout.c b/fs/binfmt_aout.c index f96eff04e11..a6395bdb26a 100644 --- a/fs/binfmt_aout.c +++ b/fs/binfmt_aout.c @@ -134,10 +134,6 @@ static int aout_core_dump(struct coredump_params *cprm) if (!dump_write(file, dump_start, dump_size)) goto end_coredump; } -/* Finally dump the task struct. Not be used by gdb, but could be useful */ - set_fs(KERNEL_DS); - if (!dump_write(file, current, sizeof(*current))) - goto end_coredump; end_coredump: set_fs(fs); return has_dumped; diff --git a/include/linux/coredump.h b/include/linux/coredump.h index 8ba66a9d902..59579cfee6a 100644 --- a/include/linux/coredump.h +++ b/include/linux/coredump.h @@ -11,7 +11,7 @@ */ static inline int dump_write(struct file *file, const void *addr, int nr) { - return file->f_op->write(file, addr, nr, &file->f_pos) == nr; + return access_ok(VERIFY_READ, addr, nr) && file->f_op->write(file, addr, nr, &file->f_pos) == nr; } static inline int dump_seek(struct file *file, loff_t off) -- cgit v1.2.3 From 3aa0ce825ade0cf5506e32ccf51d01fc8d22a9cf Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Thu, 14 Oct 2010 14:32:06 -0700 Subject: Un-inline the core-dump helper functions Tony Luck reports that the addition of the access_ok() check in commit 0eead9ab41da ("Don't dump task struct in a.out core-dumps") broke the ia64 compile due to missing the necessary header file includes. Rather than add yet another include () to make everything happy, just uninline the silly core dump helper functions and move the bodies to fs/exec.c where they make a lot more sense. dump_seek() in particular was too big to be an inline function anyway, and none of them are in any way performance-critical. And we really don't need to mess up our include file headers more than they already are. Reported-and-tested-by: Tony Luck Signed-off-by: Linus Torvalds --- fs/exec.c | 38 ++++++++++++++++++++++++++++++++++++++ include/linux/coredump.h | 34 ++-------------------------------- 2 files changed, 40 insertions(+), 32 deletions(-) diff --git a/fs/exec.c b/fs/exec.c index 828dd2461d6..03278c984ba 100644 --- a/fs/exec.c +++ b/fs/exec.c @@ -2014,3 +2014,41 @@ fail_creds: fail: return; } + +/* + * Core dumping helper functions. These are the only things you should + * do on a core-file: use only these functions to write out all the + * necessary info. + */ +int dump_write(struct file *file, const void *addr, int nr) +{ + return access_ok(VERIFY_READ, addr, nr) && file->f_op->write(file, addr, nr, &file->f_pos) == nr; +} + +int dump_seek(struct file *file, loff_t off) +{ + int ret = 1; + + if (file->f_op->llseek && file->f_op->llseek != no_llseek) { + if (file->f_op->llseek(file, off, SEEK_CUR) < 0) + return 0; + } else { + char *buf = (char *)get_zeroed_page(GFP_KERNEL); + + if (!buf) + return 0; + while (off > 0) { + unsigned long n = off; + + if (n > PAGE_SIZE) + n = PAGE_SIZE; + if (!dump_write(file, buf, n)) { + ret = 0; + break; + } + off -= n; + } + free_page((unsigned long)buf); + } + return ret; +} diff --git a/include/linux/coredump.h b/include/linux/coredump.h index 59579cfee6a..ba4b85a6d9b 100644 --- a/include/linux/coredump.h +++ b/include/linux/coredump.h @@ -9,37 +9,7 @@ * These are the only things you should do on a core-file: use only these * functions to write out all the necessary info. */ -static inline int dump_write(struct file *file, const void *addr, int nr) -{ - return access_ok(VERIFY_READ, addr, nr) && file->f_op->write(file, addr, nr, &file->f_pos) == nr; -} - -static inline int dump_seek(struct file *file, loff_t off) -{ - int ret = 1; - - if (file->f_op->llseek && file->f_op->llseek != no_llseek) { - if (file->f_op->llseek(file, off, SEEK_CUR) < 0) - return 0; - } else { - char *buf = (char *)get_zeroed_page(GFP_KERNEL); - - if (!buf) - return 0; - while (off > 0) { - unsigned long n = off; - - if (n > PAGE_SIZE) - n = PAGE_SIZE; - if (!dump_write(file, buf, n)) { - ret = 0; - break; - } - off -= n; - } - free_page((unsigned long)buf); - } - return ret; -} +extern int dump_write(struct file *file, const void *addr, int nr); +extern int dump_seek(struct file *file, loff_t off); #endif /* _LINUX_COREDUMP_H */ -- cgit v1.2.3 From cd07202cc8262e1669edff0d97715f3dd9260917 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Thu, 14 Oct 2010 16:26:43 -0700 Subject: Linux 2.6.36-rc8 --- Makefile | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/Makefile b/Makefile index 77b5c6ed0ce..7583116e5d9 100644 --- a/Makefile +++ b/Makefile @@ -1,8 +1,8 @@ VERSION = 2 PATCHLEVEL = 6 SUBLEVEL = 36 -EXTRAVERSION = -rc7 -NAME = Sheep on Meth +EXTRAVERSION = -rc8 +NAME = Flesh-Eating Bats with Fangs # *DOCUMENTATION* # To see a list of typical targets execute "make help" -- cgit v1.2.3 From 8fd01d6cfbf75465d84a4e533ed70c5f57b3ff51 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Thu, 14 Oct 2010 19:15:28 -0700 Subject: Export dump_{write,seek} to binary loader modules If you build aout support as a module, you'll want these exported. Reported-by: Tetsuo Handa Signed-off-by: Linus Torvalds --- fs/exec.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/fs/exec.c b/fs/exec.c index 03278c984ba..6d2b6f93685 100644 --- a/fs/exec.c +++ b/fs/exec.c @@ -2024,6 +2024,7 @@ int dump_write(struct file *file, const void *addr, int nr) { return access_ok(VERIFY_READ, addr, nr) && file->f_op->write(file, addr, nr, &file->f_pos) == nr; } +EXPORT_SYMBOL(dump_write); int dump_seek(struct file *file, loff_t off) { @@ -2052,3 +2053,4 @@ int dump_seek(struct file *file, loff_t off) } return ret; } +EXPORT_SYMBOL(dump_seek); -- cgit v1.2.3 From 47526903feb52f4c26a6350370bdf74e337fcdb1 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Fri, 15 Oct 2010 12:56:21 +0200 Subject: ubd: fix incorrect sector handling during request restart Commit f81f2f7c (ubd: drop unnecessary rq->sector manipulation) dropped request->sector manipulation in preparation for global request handling cleanup; unfortunately, it incorrectly assumed that the updated sector wasn't being used. ubd tries to issue as many requests as possible to io_thread. When issuing fails due to memory pressure or other reasons, the device is put on the restart list and issuing stops. On IO completion, devices on the restart list are scanned and IO issuing is restarted. ubd issues IOs sg-by-sg and issuing can be stopped in the middle of a request, so each device on the restart queue needs to remember where to restart in its current request. ubd needs to keep track of the issue position itself because, * blk_rq_pos(req) is now updated by the block layer to keep track of _completion_ position. * Multiple io_req's for the current request may be in flight, so it's difficult to tell where blk_rq_pos(req) currently is. Add ubd->rq_pos to keep track of the issue position and use it to correctly restart io_req issue. Signed-off-by: Tejun Heo Reported-by: Richard Weinberger Tested-by: Richard Weinberger Tested-by: Chris Frey Cc: stable@kernel.org Signed-off-by: Jens Axboe --- arch/um/drivers/ubd_kern.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/arch/um/drivers/ubd_kern.c b/arch/um/drivers/ubd_kern.c index 1bcd208c459..9734994cba1 100644 --- a/arch/um/drivers/ubd_kern.c +++ b/arch/um/drivers/ubd_kern.c @@ -163,6 +163,7 @@ struct ubd { struct scatterlist sg[MAX_SG]; struct request *request; int start_sg, end_sg; + sector_t rq_pos; }; #define DEFAULT_COW { \ @@ -187,6 +188,7 @@ struct ubd { .request = NULL, \ .start_sg = 0, \ .end_sg = 0, \ + .rq_pos = 0, \ } /* Protected by ubd_lock */ @@ -1228,7 +1230,6 @@ static void do_ubd_request(struct request_queue *q) { struct io_thread_req *io_req; struct request *req; - sector_t sector; int n; while(1){ @@ -1239,12 +1240,12 @@ static void do_ubd_request(struct request_queue *q) return; dev->request = req; + dev->rq_pos = blk_rq_pos(req); dev->start_sg = 0; dev->end_sg = blk_rq_map_sg(q, req, dev->sg); } req = dev->request; - sector = blk_rq_pos(req); while(dev->start_sg < dev->end_sg){ struct scatterlist *sg = &dev->sg[dev->start_sg]; @@ -1256,10 +1257,9 @@ static void do_ubd_request(struct request_queue *q) return; } prepare_request(req, io_req, - (unsigned long long)sector << 9, + (unsigned long long)dev->rq_pos << 9, sg->offset, sg->length, sg_page(sg)); - sector += sg->length >> 9; n = os_write_file(thread_fd, &io_req, sizeof(struct io_thread_req *)); if(n != sizeof(struct io_thread_req *)){ @@ -1272,6 +1272,7 @@ static void do_ubd_request(struct request_queue *q) return; } + dev->rq_pos += sg->length >> 9; dev->start_sg++; } dev->end_sg = 0; -- cgit v1.2.3 From 478971600e47cb83ff2d3c63c5c24f2b04b0d6a1 Mon Sep 17 00:00:00 2001 From: FUJITA Tomonori Date: Fri, 17 Sep 2010 00:46:42 +0900 Subject: [SCSI] bsg: fix incorrect device_status value bsg incorrectly returns sg's masked_status value for device_status. [jejb: fix up expression logic] Reported-by: Douglas Gilbert Signed-off-by: FUJITA Tomonori Cc: Stable Tree Signed-off-by: James Bottomley --- block/bsg.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/block/bsg.c b/block/bsg.c index 82d58829ba5..0c00870553a 100644 --- a/block/bsg.c +++ b/block/bsg.c @@ -426,7 +426,7 @@ static int blk_complete_sgv4_hdr_rq(struct request *rq, struct sg_io_v4 *hdr, /* * fill in all the output members */ - hdr->device_status = status_byte(rq->errors); + hdr->device_status = rq->errors & 0xff; hdr->transport_status = host_byte(rq->errors); hdr->driver_status = driver_byte(rq->errors); hdr->info = 0; -- cgit v1.2.3 From 1c8cf9c997a4a6b36e907c7ede5f048aeaab1644 Mon Sep 17 00:00:00 2001 From: Ohad Ben-Cohen Date: Wed, 13 Oct 2010 09:31:56 +0200 Subject: mmc: sdio: fix SDIO suspend/resume regression Fix SDIO suspend/resume regression introduced by 4c2ef25fe0b "mmc: fix all hangs related to mmc/sd card insert/removal during suspend/resume": PM: Syncing filesystems ... done. Freezing user space processes ... (elapsed 0.01 seconds) done. Freezing remaining freezable tasks ... (elapsed 0.01 seconds) done. Suspending console(s) (use no_console_suspend to debug) pm_op(): platform_pm_suspend+0x0/0x5c returns -38 PM: Device pxa2xx-mci.0 failed to suspend: error -38 PM: Some devices failed to suspend 4c2ef25fe0b moved the card removal/insertion mechanism out of MMC's suspend/resume path and into pm notifiers (mmc_pm_notify), and that broke SDIO's expectation that mmc_suspend_host() will remove the card, and squash the error, in case -ENOSYS is returned from the bus suspend handler (mmc_sdio_suspend() in this case). mmc_sdio_suspend() is using this whenever at least one of the card's SDIO function drivers does not have suspend/resume handlers - in that case it is agreed to force removal of the entire card. This patch fixes this regression by trivially bringing back that part of mmc_suspend_host(), which was removed by 4c2ef25fe0b. Reported-and-tested-by: Sven Neumann Signed-off-by: Ohad Ben-Cohen Cc: Maxim Levitsky Cc: Acked-by: Nicolas Pitre Signed-off-by: Chris Ball --- drivers/mmc/core/core.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c index 5db49b124ff..09eee6df065 100644 --- a/drivers/mmc/core/core.c +++ b/drivers/mmc/core/core.c @@ -1631,6 +1631,19 @@ int mmc_suspend_host(struct mmc_host *host) if (host->bus_ops && !host->bus_dead) { if (host->bus_ops->suspend) err = host->bus_ops->suspend(host); + if (err == -ENOSYS || !host->bus_ops->resume) { + /* + * We simply "remove" the card in this case. + * It will be redetected on resume. + */ + if (host->bus_ops->remove) + host->bus_ops->remove(host); + mmc_claim_host(host); + mmc_detach_bus(host); + mmc_release_host(host); + host->pm_flags = 0; + err = 0; + } } mmc_bus_put(host); -- cgit v1.2.3 From 799c10559d60f159ab2232203f222f18fa3c4a5f Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Fri, 15 Oct 2010 11:09:28 -0700 Subject: De-pessimize rds_page_copy_user Don't try to "optimize" rds_page_copy_user() by using kmap_atomic() and the unsafe atomic user mode accessor functions. It's actually slower than the straightforward code on any reasonable modern CPU. Back when the code was written (although probably not by the time it was actually merged, though), 32-bit x86 may have been the dominant architecture. And there kmap_atomic() can be a lot faster than kmap() (unless you have very good locality, in which case the virtual address caching by kmap() can overcome all the downsides). But these days, x86-64 may not be more populous, but it's getting there (and if you care about performance, it's definitely already there - you'd have upgraded your CPU's already in the last few years). And on x86-64, the non-kmap_atomic() version is faster, simply because the code is simpler and doesn't have the "re-try page fault" case. People with old hardware are not likely to care about RDS anyway, and the optimization for the 32-bit case is simply buggy, since it doesn't verify the user addresses properly. Reported-by: Dan Rosenberg Acked-by: Andrew Morton Cc: stable@kernel.org Signed-off-by: Linus Torvalds --- net/rds/page.c | 27 +++++++-------------------- 1 file changed, 7 insertions(+), 20 deletions(-) diff --git a/net/rds/page.c b/net/rds/page.c index 595a952d4b1..1dfbfea12e9 100644 --- a/net/rds/page.c +++ b/net/rds/page.c @@ -57,30 +57,17 @@ int rds_page_copy_user(struct page *page, unsigned long offset, unsigned long ret; void *addr; - if (to_user) + addr = kmap(page); + if (to_user) { rds_stats_add(s_copy_to_user, bytes); - else + ret = copy_to_user(ptr, addr + offset, bytes); + } else { rds_stats_add(s_copy_from_user, bytes); - - addr = kmap_atomic(page, KM_USER0); - if (to_user) - ret = __copy_to_user_inatomic(ptr, addr + offset, bytes); - else - ret = __copy_from_user_inatomic(addr + offset, ptr, bytes); - kunmap_atomic(addr, KM_USER0); - - if (ret) { - addr = kmap(page); - if (to_user) - ret = copy_to_user(ptr, addr + offset, bytes); - else - ret = copy_from_user(addr + offset, ptr, bytes); - kunmap(page); - if (ret) - return -EFAULT; + ret = copy_from_user(addr + offset, ptr, bytes); } + kunmap(page); - return 0; + return ret ? -EFAULT : 0; } EXPORT_SYMBOL_GPL(rds_page_copy_user); -- cgit v1.2.3 From 3e645d6b485446c54c6745c5e2cf5c528fe4deec Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Fri, 15 Oct 2010 11:12:38 -0700 Subject: v4l1: fix 32-bit compat microcode loading translation The compat code for the VIDIOCSMICROCODE ioctl is totally buggered. It's only used by the VIDEO_STRADIS driver, and that one is scheduled to staging and eventually removed unless somebody steps up to maintain it (at which point it should use request_firmware() rather than some magic ioctl). So we'll get rid of it eventually. But in the meantime, the compatibility ioctl code is broken, and this tries to get it to at least limp along (even if Mauro suggested just deleting it entirely, which may be the right thing to do - I don't think the compatibility translation code has ever worked unless you were very lucky). Reported-by: Kees Cook Cc: Mauro Carvalho Chehab Cc: stable@kernel.org Signed-off-by: Linus Torvalds --- drivers/media/video/v4l2-compat-ioctl32.c | 32 ++++++++++++++++++++----------- 1 file changed, 21 insertions(+), 11 deletions(-) diff --git a/drivers/media/video/v4l2-compat-ioctl32.c b/drivers/media/video/v4l2-compat-ioctl32.c index 073f01390cd..86294ed35c9 100644 --- a/drivers/media/video/v4l2-compat-ioctl32.c +++ b/drivers/media/video/v4l2-compat-ioctl32.c @@ -193,17 +193,24 @@ static int put_video_window32(struct video_window *kp, struct video_window32 __u struct video_code32 { char loadwhat[16]; /* name or tag of file being passed */ compat_int_t datasize; - unsigned char *data; + compat_uptr_t data; }; -static int get_microcode32(struct video_code *kp, struct video_code32 __user *up) +static struct video_code __user *get_microcode32(struct video_code32 *kp) { - if (!access_ok(VERIFY_READ, up, sizeof(struct video_code32)) || - copy_from_user(kp->loadwhat, up->loadwhat, sizeof(up->loadwhat)) || - get_user(kp->datasize, &up->datasize) || - copy_from_user(kp->data, up->data, up->datasize)) - return -EFAULT; - return 0; + struct video_code __user *up; + + up = compat_alloc_user_space(sizeof(*up)); + + /* + * NOTE! We don't actually care if these fail. If the + * user address is invalid, the native ioctl will do + * the error handling for us + */ + (void) copy_to_user(up->loadwhat, kp->loadwhat, sizeof(up->loadwhat)); + (void) put_user(kp->datasize, &up->datasize); + (void) put_user(compat_ptr(kp->data), &up->data); + return up; } #define VIDIOCGTUNER32 _IOWR('v', 4, struct video_tuner32) @@ -739,7 +746,7 @@ static long do_video_ioctl(struct file *file, unsigned int cmd, unsigned long ar struct video_tuner vt; struct video_buffer vb; struct video_window vw; - struct video_code vc; + struct video_code32 vc; struct video_audio va; #endif struct v4l2_format v2f; @@ -818,8 +825,11 @@ static long do_video_ioctl(struct file *file, unsigned int cmd, unsigned long ar break; case VIDIOCSMICROCODE: - err = get_microcode32(&karg.vc, up); - compatible_arg = 0; + /* Copy the 32-bit "video_code32" to kernel space */ + if (copy_from_user(&karg.vc, up, sizeof(karg.vc))) + return -EFAULT; + /* Convert the 32-bit version to a 64-bit version in user space */ + up = get_microcode32(&karg.vc); break; case VIDIOCSFREQ: -- cgit v1.2.3 From a9febbb4bd1302b6f01aa1203b0a804e4e5c9e25 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Fri, 15 Oct 2010 14:34:12 -0700 Subject: sysctl: min/max bounds are optional sysctl check complains with a WARN() when proc_doulongvec_minmax() or proc_doulongvec_ms_jiffies_minmax() are used by a vector of longs (with more than one element), with no min or max value specified. This is unexpected, given we had a bug on this min/max handling :) Reported-by: Jiri Slaby Signed-off-by: Eric Dumazet Cc: "Eric W. Biederman" Cc: David Miller Acked-by: WANG Cong Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- kernel/sysctl_check.c | 9 --------- 1 file changed, 9 deletions(-) diff --git a/kernel/sysctl_check.c b/kernel/sysctl_check.c index 04cdcf72c82..10b90d8a03c 100644 --- a/kernel/sysctl_check.c +++ b/kernel/sysctl_check.c @@ -143,15 +143,6 @@ int sysctl_check_table(struct nsproxy *namespaces, struct ctl_table *table) if (!table->maxlen) set_fail(&fail, table, "No maxlen"); } - if ((table->proc_handler == proc_doulongvec_minmax) || - (table->proc_handler == proc_doulongvec_ms_jiffies_minmax)) { - if (table->maxlen > sizeof (unsigned long)) { - if (!table->extra1) - set_fail(&fail, table, "No min"); - if (!table->extra2) - set_fail(&fail, table, "No max"); - } - } #ifdef CONFIG_PROC_SYSCTL if (table->procname && !table->proc_handler) set_fail(&fail, table, "No proc_handler"); -- cgit v1.2.3 From e3c6cf61815b0af0c697aeed4c6f11762f913002 Mon Sep 17 00:00:00 2001 From: FUJITA Tomonori Date: Fri, 15 Oct 2010 14:34:13 -0700 Subject: uml: fix build MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Fix a build error introduced by d6d1b650ae6acce73d55dd024 ("param: simple locking for sysfs-writable charp parameters"). CC arch/um/kernel/trap.o arch/um/drivers/hostaudio_kern.c: In function 'hostaudio_open': arch/um/drivers/hostaudio_kern.c:204: error: '__param_dsp' undeclared (first use in this function) arch/um/drivers/hostaudio_kern.c:204: error: (Each undeclared identifier is reported only once arch/um/drivers/hostaudio_kern.c:204: error: for each function it appears in.) arch/um/drivers/hostaudio_kern.c: In function 'hostmixer_open_mixdev': arch/um/drivers/hostaudio_kern.c:265: error: '__param_mixer' undeclared (first use in this function) arch/um/drivers/hostaudio_kern.c:272: error: '__param_dsp' undeclared (first use in this function) Reported-by: Toralf Förster Tested-by: Toralf Förster Cc: Rusty Russell Cc: Takashi Iwai Cc: Jeff Dike Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/um/drivers/hostaudio_kern.c | 14 +++++--------- 1 file changed, 5 insertions(+), 9 deletions(-) diff --git a/arch/um/drivers/hostaudio_kern.c b/arch/um/drivers/hostaudio_kern.c index 0c46e398cd8..63c740a85b4 100644 --- a/arch/um/drivers/hostaudio_kern.c +++ b/arch/um/drivers/hostaudio_kern.c @@ -40,6 +40,11 @@ static char *mixer = HOSTAUDIO_DEV_MIXER; " This is used to specify the host mixer device to the hostaudio driver.\n"\ " The default is \"" HOSTAUDIO_DEV_MIXER "\".\n\n" +module_param(dsp, charp, 0644); +MODULE_PARM_DESC(dsp, DSP_HELP); +module_param(mixer, charp, 0644); +MODULE_PARM_DESC(mixer, MIXER_HELP); + #ifndef MODULE static int set_dsp(char *name, int *add) { @@ -56,15 +61,6 @@ static int set_mixer(char *name, int *add) } __uml_setup("mixer=", set_mixer, "mixer=\n" MIXER_HELP); - -#else /*MODULE*/ - -module_param(dsp, charp, 0644); -MODULE_PARM_DESC(dsp, DSP_HELP); - -module_param(mixer, charp, 0644); -MODULE_PARM_DESC(mixer, MIXER_HELP); - #endif /* /dev/dsp file operations */ -- cgit v1.2.3 From 79b5dc0c64d88cda3da23b2e22a5cec0964372ac Mon Sep 17 00:00:00 2001 From: Eric Paris Date: Fri, 15 Oct 2010 14:34:14 -0700 Subject: types.h: define __aligned_u64 and expose to userspace We currently have a kernel internal type called aligned_u64 which aligns __u64's on 8 bytes boundaries even on systems which would normally align them on 4 byte boundaries. This patch creates a new type __aligned_u64 which does the same thing but which is exposed to userspace rather than being kernel internal. [akpm: merge early as both the net and audit trees want this] [akpm@linux-foundation.org: enhance the comment describing the reasons for using aligned_u64. Via Andreas and Andi.] Based-on-patch-by: Andreas Gruenbacher Signed-off-by: Eric Paris Cc: Jan Engelhardt Cc: David Miller Cc: Andi Kleen Cc: Arnd Bergmann Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/types.h | 15 ++++++++++++++- 1 file changed, 14 insertions(+), 1 deletion(-) diff --git a/include/linux/types.h b/include/linux/types.h index 01a082f56ef..357dbc19606 100644 --- a/include/linux/types.h +++ b/include/linux/types.h @@ -121,7 +121,15 @@ typedef __u64 u_int64_t; typedef __s64 int64_t; #endif -/* this is a special 64bit data type that is 8-byte aligned */ +/* + * aligned_u64 should be used in defining kernel<->userspace ABIs to avoid + * common 32/64-bit compat problems. + * 64-bit values align to 4-byte boundaries on x86_32 (and possibly other + * architectures) and to 8-byte boundaries on 64-bit architetures. The new + * aligned_64 type enforces 8-byte alignment so that structs containing + * aligned_64 values have the same alignment on 32-bit and 64-bit architectures. + * No conversions are necessary between 32-bit user-space and a 64-bit kernel. + */ #define aligned_u64 __u64 __attribute__((aligned(8))) #define aligned_be64 __be64 __attribute__((aligned(8))) #define aligned_le64 __le64 __attribute__((aligned(8))) @@ -178,6 +186,11 @@ typedef __u64 __bitwise __be64; typedef __u16 __bitwise __sum16; typedef __u32 __bitwise __wsum; +/* this is a special 64bit data type that is 8-byte aligned */ +#define __aligned_u64 __u64 __attribute__((aligned(8))) +#define __aligned_be64 __be64 __attribute__((aligned(8))) +#define __aligned_le64 __le64 __attribute__((aligned(8))) + #ifdef __KERNEL__ typedef unsigned __bitwise__ gfp_t; typedef unsigned __bitwise__ fmode_t; -- cgit v1.2.3 From 99d6734f3ca66c17b81df85724953a9b29eff7cf Mon Sep 17 00:00:00 2001 From: Kyle McMartin Date: Fri, 15 Oct 2010 21:16:45 -0400 Subject: m32r: restore _BLOCKABLE Commit a7f8388e accidentally removed it... Al explains: "Sorry, reordering breakage. In the signals tree here I have static inline void sig_set_blocked(struct sigset_t *set) ... and it's used all over the place (including quite a few places where we currently have sigprocmask(SIG_SETMASK, set, NULL), which is what it's equivalent to). With that done, m32r doesn't use _BLOCKABLE anywhere, so it got removed. And that chunk got picked when I'd been reordering the queue to pull the arch-specific fixes in front. Sorry." Signed-off-by: Kyle McMartin Cc: Al Viro Signed-off-by: Linus Torvalds --- arch/m32r/kernel/signal.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/m32r/kernel/signal.c b/arch/m32r/kernel/signal.c index 7bbe38645ed..cc36fe14925 100644 --- a/arch/m32r/kernel/signal.c +++ b/arch/m32r/kernel/signal.c @@ -28,6 +28,8 @@ #define DEBUG_SIG 0 +#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP))) + asmlinkage int sys_sigaltstack(const stack_t __user *uss, stack_t __user *uoss, unsigned long r2, unsigned long r3, unsigned long r4, -- cgit v1.2.3 From 388d148fe89cbdd99ec6bcab6cf34480e74c50ee Mon Sep 17 00:00:00 2001 From: Kyle McMartin Date: Fri, 15 Oct 2010 21:17:09 -0400 Subject: m32r: get_user takes an lvalue, not a pointer Signed-off-by: Kyle McMartin Acked-by: Al "my fuckup" Viro Signed-off-by: Linus Torvalds --- arch/m32r/kernel/signal.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/m32r/kernel/signal.c b/arch/m32r/kernel/signal.c index cc36fe14925..a08697f0886 100644 --- a/arch/m32r/kernel/signal.c +++ b/arch/m32r/kernel/signal.c @@ -256,7 +256,7 @@ give_sigsegv: static int prev_insn(struct pt_regs *regs) { u16 inst; - if (get_user(&inst, (u16 __user *)(regs->bpc - 2))) + if (get_user(inst, (u16 __user *)(regs->bpc - 2))) return -EFAULT; if ((inst & 0xfff0) == 0x10f0) /* trap ? */ regs->bpc -= 2; -- cgit v1.2.3 From 4f515cc93248face6ba45dd296dc3e7381848ab7 Mon Sep 17 00:00:00 2001 From: Kyle McMartin Date: Fri, 15 Oct 2010 21:17:13 -0400 Subject: m32r: add kernel/.gitignore and ignore vmlinux.lds Signed-off-by: Kyle McMartin Signed-off-by: Linus Torvalds --- arch/m32r/kernel/.gitignore | 1 + 1 file changed, 1 insertion(+) create mode 100644 arch/m32r/kernel/.gitignore diff --git a/arch/m32r/kernel/.gitignore b/arch/m32r/kernel/.gitignore new file mode 100644 index 00000000000..c5f676c3c22 --- /dev/null +++ b/arch/m32r/kernel/.gitignore @@ -0,0 +1 @@ +vmlinux.lds -- cgit v1.2.3 From 2d019713b7acbc01d769a1e512ca1f9a04c30bd0 Mon Sep 17 00:00:00 2001 From: Kyle McMartin Date: Fri, 15 Oct 2010 21:17:16 -0400 Subject: m32r: test __LITTLE_ENDIAN__ instead of __LITTLE_ENDIAN Fixes build for me... these are what's tested in byteorder.h... Signed-off-by: Kyle McMartin Signed-off-by: Linus Torvalds --- arch/m32r/include/asm/elf.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/m32r/include/asm/elf.h b/arch/m32r/include/asm/elf.h index 2f85412ef73..b8da7d0574d 100644 --- a/arch/m32r/include/asm/elf.h +++ b/arch/m32r/include/asm/elf.h @@ -82,9 +82,9 @@ typedef elf_fpreg_t elf_fpregset_t; * These are used to set parameters in the core dumps. */ #define ELF_CLASS ELFCLASS32 -#if defined(__LITTLE_ENDIAN) +#if defined(__LITTLE_ENDIAN__) #define ELF_DATA ELFDATA2LSB -#elif defined(__BIG_ENDIAN) +#elif defined(__BIG_ENDIAN__) #define ELF_DATA ELFDATA2MSB #else #error no endian defined -- cgit v1.2.3 From aa73aec6c385e2c797ac25cc7ccf0318031de7c8 Mon Sep 17 00:00:00 2001 From: Clemens Ladisch Date: Fri, 15 Oct 2010 12:06:18 +0200 Subject: ALSA: rawmidi: fix oops (use after free) when unloading a driver module When a driver module is unloaded and the last still open file is a raw MIDI device, the card and its devices will be actually freed in the snd_card_file_remove() call when that file is closed. Afterwards, rmidi and rmidi->card point into freed memory, so the module pointer is likely to be garbage. (This was introduced by commit 9a1b64caac82aa02cb74587ffc798e6f42c6170a.) Signed-off-by: Clemens Ladisch Reported-by: Krzysztof Foltman Cc: 2.6.30-2.6.35 Signed-off-by: Takashi Iwai --- sound/core/rawmidi.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/sound/core/rawmidi.c b/sound/core/rawmidi.c index a7868ad4d53..cbbed0db9e5 100644 --- a/sound/core/rawmidi.c +++ b/sound/core/rawmidi.c @@ -535,13 +535,15 @@ static int snd_rawmidi_release(struct inode *inode, struct file *file) { struct snd_rawmidi_file *rfile; struct snd_rawmidi *rmidi; + struct module *module; rfile = file->private_data; rmidi = rfile->rmidi; rawmidi_release_priv(rfile); kfree(rfile); + module = rmidi->card->module; snd_card_file_remove(rmidi->card, file); - module_put(rmidi->card->module); + module_put(module); return 0; } -- cgit v1.2.3 From aa0170fff3c26bf2b42159af2dd9cf86444c292a Mon Sep 17 00:00:00 2001 From: Stefan Richter Date: Sun, 17 Oct 2010 14:09:12 +0200 Subject: firewire: ohci: fix TI TSB82AA2 regression since 2.6.35 Revert commit 54672386ccf36ffa21d1de8e75624af83f9b0eeb "firewire: ohci: fix up configuration of TI chips". It caused massive slow-down and data corruption with a TSB82AA2 based StarTech EC1394B2 ExpressCard and FireWire 800 harddisks. https://bugs.launchpad.net/ubuntu/+source/linux/+bug/657081 http://thread.gmane.org/gmane.linux.kernel.firewire.user/4013 The fact that some card EEPROMs do not program these enhancements may be related to TSB81BA3 phy chip errata, if not to bugs of TSB82AA2 itself. We could re-add these configuration steps, but only conditional on a whitelist of cards on which these enhancements bring a proven positive effect. Reported-and-tested-by: Eric Shattow Cc: Clemens Ladisch Cc: 2.6.35 Signed-off-by: Stefan Richter --- drivers/firewire/ohci.c | 19 +------------------ drivers/firewire/ohci.h | 8 -------- 2 files changed, 1 insertion(+), 26 deletions(-) diff --git a/drivers/firewire/ohci.c b/drivers/firewire/ohci.c index 1b05896648b..9dcb17d51ae 100644 --- a/drivers/firewire/ohci.c +++ b/drivers/firewire/ohci.c @@ -2840,7 +2840,7 @@ static int __devinit pci_probe(struct pci_dev *dev, const struct pci_device_id *ent) { struct fw_ohci *ohci; - u32 bus_options, max_receive, link_speed, version, link_enh; + u32 bus_options, max_receive, link_speed, version; u64 guid; int i, err, n_ir, n_it; size_t size; @@ -2894,23 +2894,6 @@ static int __devinit pci_probe(struct pci_dev *dev, if (param_quirks) ohci->quirks = param_quirks; - /* TI OHCI-Lynx and compatible: set recommended configuration bits. */ - if (dev->vendor == PCI_VENDOR_ID_TI) { - pci_read_config_dword(dev, PCI_CFG_TI_LinkEnh, &link_enh); - - /* adjust latency of ATx FIFO: use 1.7 KB threshold */ - link_enh &= ~TI_LinkEnh_atx_thresh_mask; - link_enh |= TI_LinkEnh_atx_thresh_1_7K; - - /* use priority arbitration for asynchronous responses */ - link_enh |= TI_LinkEnh_enab_unfair; - - /* required for aPhyEnhanceEnable to work */ - link_enh |= TI_LinkEnh_enab_accel; - - pci_write_config_dword(dev, PCI_CFG_TI_LinkEnh, link_enh); - } - ar_context_init(&ohci->ar_request_ctx, ohci, OHCI1394_AsReqRcvContextControlSet); diff --git a/drivers/firewire/ohci.h b/drivers/firewire/ohci.h index 0e6c5a46690..ef5e7336da6 100644 --- a/drivers/firewire/ohci.h +++ b/drivers/firewire/ohci.h @@ -155,12 +155,4 @@ #define OHCI1394_phy_tcode 0xe -/* TI extensions */ - -#define PCI_CFG_TI_LinkEnh 0xf4 -#define TI_LinkEnh_enab_accel 0x00000002 -#define TI_LinkEnh_enab_unfair 0x00000080 -#define TI_LinkEnh_atx_thresh_mask 0x00003000 -#define TI_LinkEnh_atx_thresh_1_7K 0x00001000 - #endif /* _FIREWIRE_OHCI_H */ -- cgit v1.2.3 From 6a2a11dbea5db417d200d38dda53c30a2e5603e0 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Thu, 14 Oct 2010 17:14:57 -0400 Subject: drm/radeon/kms: avivo cursor workaround applies to evergreen as well Fixes cursor corruption in certain cases. Signed-off-by: Alex Deucher Cc: stable@kernel.org Signed-off-by: Dave Airlie --- drivers/gpu/drm/radeon/radeon_cursor.c | 28 ++++++++++++---------------- 1 file changed, 12 insertions(+), 16 deletions(-) diff --git a/drivers/gpu/drm/radeon/radeon_cursor.c b/drivers/gpu/drm/radeon/radeon_cursor.c index 5731fc9b1ae..3eef567b042 100644 --- a/drivers/gpu/drm/radeon/radeon_cursor.c +++ b/drivers/gpu/drm/radeon/radeon_cursor.c @@ -203,6 +203,7 @@ int radeon_crtc_cursor_move(struct drm_crtc *crtc, struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc); struct radeon_device *rdev = crtc->dev->dev_private; int xorigin = 0, yorigin = 0; + int w = radeon_crtc->cursor_width; if (x < 0) xorigin = -x + 1; @@ -213,22 +214,7 @@ int radeon_crtc_cursor_move(struct drm_crtc *crtc, if (yorigin >= CURSOR_HEIGHT) yorigin = CURSOR_HEIGHT - 1; - radeon_lock_cursor(crtc, true); - if (ASIC_IS_DCE4(rdev)) { - /* cursors are offset into the total surface */ - x += crtc->x; - y += crtc->y; - DRM_DEBUG("x %d y %d c->x %d c->y %d\n", x, y, crtc->x, crtc->y); - - /* XXX: check if evergreen has the same issues as avivo chips */ - WREG32(EVERGREEN_CUR_POSITION + radeon_crtc->crtc_offset, - ((xorigin ? 0 : x) << 16) | - (yorigin ? 0 : y)); - WREG32(EVERGREEN_CUR_HOT_SPOT + radeon_crtc->crtc_offset, (xorigin << 16) | yorigin); - WREG32(EVERGREEN_CUR_SIZE + radeon_crtc->crtc_offset, - ((radeon_crtc->cursor_width - 1) << 16) | (radeon_crtc->cursor_height - 1)); - } else if (ASIC_IS_AVIVO(rdev)) { - int w = radeon_crtc->cursor_width; + if (ASIC_IS_AVIVO(rdev)) { int i = 0; struct drm_crtc *crtc_p; @@ -260,7 +246,17 @@ int radeon_crtc_cursor_move(struct drm_crtc *crtc, if (w <= 0) w = 1; } + } + radeon_lock_cursor(crtc, true); + if (ASIC_IS_DCE4(rdev)) { + WREG32(EVERGREEN_CUR_POSITION + radeon_crtc->crtc_offset, + ((xorigin ? 0 : x) << 16) | + (yorigin ? 0 : y)); + WREG32(EVERGREEN_CUR_HOT_SPOT + radeon_crtc->crtc_offset, (xorigin << 16) | yorigin); + WREG32(EVERGREEN_CUR_SIZE + radeon_crtc->crtc_offset, + ((w - 1) << 16) | (radeon_crtc->cursor_height - 1)); + } else if (ASIC_IS_AVIVO(rdev)) { WREG32(AVIVO_D1CUR_POSITION + radeon_crtc->crtc_offset, ((xorigin ? 0 : x) << 16) | (yorigin ? 0 : y)); -- cgit v1.2.3 From d793fe8caa3911e6a1e826b45d4ee00d250cdec8 Mon Sep 17 00:00:00 2001 From: Nathan Holstein Date: Fri, 15 Oct 2010 11:54:02 -0400 Subject: Bluetooth: fix oops in l2cap_connect_req In error cases when the ACL is insecure or we fail to allocate a new struct sock, we jump to the "response" label. If so, "sk" will be null and the kernel crashes. Signed-off-by: Nathan Holstein Acked-by: Marcel Holtmann Signed-off-by: Gustavo F. Padovan --- net/bluetooth/l2cap.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/net/bluetooth/l2cap.c b/net/bluetooth/l2cap.c index 0b54b7dd840..dc6020570a3 100644 --- a/net/bluetooth/l2cap.c +++ b/net/bluetooth/l2cap.c @@ -2891,7 +2891,7 @@ static inline int l2cap_connect_req(struct l2cap_conn *conn, struct l2cap_cmd_hd struct l2cap_chan_list *list = &conn->chan_list; struct l2cap_conn_req *req = (struct l2cap_conn_req *) data; struct l2cap_conn_rsp rsp; - struct sock *parent, *uninitialized_var(sk); + struct sock *parent, *sk = NULL; int result, status = L2CAP_CS_NO_INFO; u16 dcid = 0, scid = __le16_to_cpu(req->scid); @@ -3000,7 +3000,7 @@ sendresp: L2CAP_INFO_REQ, sizeof(info), &info); } - if (!(l2cap_pi(sk)->conf_state & L2CAP_CONF_REQ_SENT) && + if (sk && !(l2cap_pi(sk)->conf_state & L2CAP_CONF_REQ_SENT) && result == L2CAP_CR_SUCCESS) { u8 buf[128]; l2cap_pi(sk)->conf_state |= L2CAP_CONF_REQ_SENT; -- cgit v1.2.3 From c5b4afec8e669bbe265daea24037fccfc42c4fe3 Mon Sep 17 00:00:00 2001 From: Jon Povey Date: Tue, 12 Oct 2010 13:47:05 +0900 Subject: i2c-davinci: Fix TX setup for more SoCs This patch is an improvement to 4bba0fd8d1c6d405df666e2573e1a1f917098be0 which got to mainline a little early. Sudhakar Rajashekhara explains that at least OMAP-L138 requires MDR mode settings before DXR for correct behaviour, so load MDR first with STT cleared and later load again with STT set. Tested on DM355 connected to Techwell TW2836 and Wolfson WM8985 Signed-off-by: Jon Povey Acked-by: Troy Kisky Tested-by: Sudhakar Rajashekhara Acked-by: Kevin Hilman Signed-off-by: Ben Dooks --- drivers/i2c/busses/i2c-davinci.c | 24 +++++++++++++++--------- 1 file changed, 15 insertions(+), 9 deletions(-) diff --git a/drivers/i2c/busses/i2c-davinci.c b/drivers/i2c/busses/i2c-davinci.c index b8feac5f2ef..5795c8398c7 100644 --- a/drivers/i2c/busses/i2c-davinci.c +++ b/drivers/i2c/busses/i2c-davinci.c @@ -331,21 +331,16 @@ i2c_davinci_xfer_msg(struct i2c_adapter *adap, struct i2c_msg *msg, int stop) INIT_COMPLETION(dev->cmd_complete); dev->cmd_err = 0; - /* Take I2C out of reset, configure it as master and set the - * start bit */ - flag = DAVINCI_I2C_MDR_IRS | DAVINCI_I2C_MDR_MST | DAVINCI_I2C_MDR_STT; + /* Take I2C out of reset and configure it as master */ + flag = DAVINCI_I2C_MDR_IRS | DAVINCI_I2C_MDR_MST; /* if the slave address is ten bit address, enable XA bit */ if (msg->flags & I2C_M_TEN) flag |= DAVINCI_I2C_MDR_XA; if (!(msg->flags & I2C_M_RD)) flag |= DAVINCI_I2C_MDR_TRX; - if (stop) - flag |= DAVINCI_I2C_MDR_STP; - if (msg->len == 0) { + if (msg->len == 0) flag |= DAVINCI_I2C_MDR_RM; - flag &= ~DAVINCI_I2C_MDR_STP; - } /* Enable receive or transmit interrupts */ w = davinci_i2c_read_reg(dev, DAVINCI_I2C_IMR_REG); @@ -357,18 +352,29 @@ i2c_davinci_xfer_msg(struct i2c_adapter *adap, struct i2c_msg *msg, int stop) dev->terminate = 0; + /* + * Write mode register first as needed for correct behaviour + * on OMAP-L138, but don't set STT yet to avoid a race with XRDY + * occuring before we have loaded DXR + */ + davinci_i2c_write_reg(dev, DAVINCI_I2C_MDR_REG, flag); + /* * First byte should be set here, not after interrupt, * because transmit-data-ready interrupt can come before * NACK-interrupt during sending of previous message and * ICDXR may have wrong data + * It also saves us one interrupt, slightly faster */ if ((!(msg->flags & I2C_M_RD)) && dev->buf_len) { davinci_i2c_write_reg(dev, DAVINCI_I2C_DXR_REG, *dev->buf++); dev->buf_len--; } - /* write the data into mode register; start transmitting */ + /* Set STT to begin transmit now DXR is loaded */ + flag |= DAVINCI_I2C_MDR_STT; + if (stop && msg->len != 0) + flag |= DAVINCI_I2C_MDR_STP; davinci_i2c_write_reg(dev, DAVINCI_I2C_MDR_REG, flag); r = wait_for_completion_interruptible_timeout(&dev->cmd_complete, -- cgit v1.2.3 From e39428d53d080ad2615b772d7f99d2a70c2aaab2 Mon Sep 17 00:00:00 2001 From: Marc Kleine-Budde Date: Mon, 21 Jun 2010 09:27:05 +0200 Subject: i2c-imx: do not allow interruptions when waiting for I2C to complete The i2c_imx_trx_complete() function is using wait_event_interruptible_timeout() to wait for the I2C controller to signal that it has completed an I2C bus operation. If the process that causes the I2C operation receives a signal, the wait will be interrupted, returning an error. It is better to let the I2C operation finished before handling the signal (i.e. returning into userspace). It is safe to use wait_event_timeout() instead, because the timeout will allow the process to exit if the I2C bus hangs. It's also better to allow the I2C operation to finish, because unacknowledged I2C operations can cause the I2C bus to hang. Signed-off-by: Marc Kleine-Budde Reviewed-by: Wolfram Sang Signed-off-by: Ben Dooks --- drivers/i2c/busses/i2c-imx.c | 12 +++--------- 1 file changed, 3 insertions(+), 9 deletions(-) diff --git a/drivers/i2c/busses/i2c-imx.c b/drivers/i2c/busses/i2c-imx.c index d1ff9408dc1..4c2a62b75b5 100644 --- a/drivers/i2c/busses/i2c-imx.c +++ b/drivers/i2c/busses/i2c-imx.c @@ -159,15 +159,9 @@ static int i2c_imx_bus_busy(struct imx_i2c_struct *i2c_imx, int for_busy) static int i2c_imx_trx_complete(struct imx_i2c_struct *i2c_imx) { - int result; - - result = wait_event_interruptible_timeout(i2c_imx->queue, - i2c_imx->i2csr & I2SR_IIF, HZ / 10); + wait_event_timeout(i2c_imx->queue, i2c_imx->i2csr & I2SR_IIF, HZ / 10); - if (unlikely(result < 0)) { - dev_dbg(&i2c_imx->adapter.dev, "<%s> result < 0\n", __func__); - return result; - } else if (unlikely(!(i2c_imx->i2csr & I2SR_IIF))) { + if (unlikely(!(i2c_imx->i2csr & I2SR_IIF))) { dev_dbg(&i2c_imx->adapter.dev, "<%s> Timeout\n", __func__); return -ETIMEDOUT; } @@ -295,7 +289,7 @@ static irqreturn_t i2c_imx_isr(int irq, void *dev_id) i2c_imx->i2csr = temp; temp &= ~I2SR_IIF; writeb(temp, i2c_imx->base + IMX_I2C_I2SR); - wake_up_interruptible(&i2c_imx->queue); + wake_up(&i2c_imx->queue); return IRQ_HANDLED; } -- cgit v1.2.3 From 9756403b16cfeda85efe77e62832a2f6b5752fdf Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Wed, 13 Oct 2010 09:19:55 +0000 Subject: gianfar: fix double lock typo This should be a _restore() instead of a _save(). Signed-off-by: Dan Carpenter Signed-off-by: David S. Miller --- drivers/net/gianfar_ethtool.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/gianfar_ethtool.c b/drivers/net/gianfar_ethtool.c index 9bda023c023..ddab7036e37 100644 --- a/drivers/net/gianfar_ethtool.c +++ b/drivers/net/gianfar_ethtool.c @@ -538,7 +538,7 @@ static int gfar_set_rx_csum(struct net_device *dev, uint32_t data) unlock_tx_qs(priv); unlock_rx_qs(priv); - local_irq_save(flags); + local_irq_restore(flags); for (i = 0; i < priv->num_rx_queues; i++) gfar_clean_rx_ring(priv->rx_queue[i], -- cgit v1.2.3 From 0a74a1df3c13655b66b1908d76f2159654216326 Mon Sep 17 00:00:00 2001 From: Daniel Mack Date: Mon, 18 Oct 2010 08:43:30 -0700 Subject: Input: evdev - fix Ooops in EVIOCGABS/EVIOCSABS This fixes a regression introduced by the dynamic allocation of absinfo for input devices. We need to bail out early for input devices which don't have absolute axis. [ 929.664303] Pid: 2989, comm: input Not tainted 2.6.36-rc8+ #14 MS-7260/MS-7260 [ 929.664318] EIP: 0060:[] EFLAGS: 00010246 CPU: 0 [ 929.664331] EIP is at evdev_ioctl+0x4f8/0x59f [ 929.664341] EAX: 00000040 EBX: 00000000 ECX: 00000006 EDX: f45a1efc [ 929.664355] ESI: 00000000 EDI: f45a1efc EBP: f45a1f24 ESP: f45a1eb8 [ 929.664369] DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068 [ 929.664402] f470da74 f6a30e78 f462c240 00000018 bfe4a260 00000000 f45b06fc 00000000 [ 929.664429] <0> 000000c4 b769d000 c3544620 f470da74 f45b06fc f45b06fc f45a1f38 c107dd1f [ 929.664458] <0> f4710b74 000000c4 00000000 00000000 00000000 0000029d 00000a74 f4710b74 [ 929.664500] [] ? handle_mm_fault+0x2be/0x59a [ 929.664513] [] ? evdev_ioctl+0x0/0x59f [ 929.664524] [] ? do_vfs_ioctl+0x494/0x4d9 [ 929.664538] [] ? up_read+0x16/0x29 [ 929.664550] [] ? do_page_fault+0x2ff/0x32d [ 929.664564] [] ? do_sys_open+0xc5/0xcf [ 929.664575] [] ? sys_ioctl+0x41/0x61 [ 929.664587] [] ? sysenter_do_call+0x12/0x36 [ 929.684570] ---[ end trace 11b83e923bd8f2bb ]--- Signed-off-by: Daniel Mack Signed-off-by: Dmitry Torokhov --- drivers/input/evdev.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/input/evdev.c b/drivers/input/evdev.c index c908c5f8364..afb64cf3748 100644 --- a/drivers/input/evdev.c +++ b/drivers/input/evdev.c @@ -669,6 +669,9 @@ static long evdev_do_ioctl(struct file *file, unsigned int cmd, if ((_IOC_NR(cmd) & ~ABS_MAX) == _IOC_NR(EVIOCGABS(0))) { + if (!dev->absinfo) + return -EINVAL; + t = _IOC_NR(cmd) & ABS_MAX; abs = dev->absinfo[t]; @@ -684,6 +687,9 @@ static long evdev_do_ioctl(struct file *file, unsigned int cmd, if ((_IOC_NR(cmd) & ~ABS_MAX) == _IOC_NR(EVIOCSABS(0))) { + if (!dev->absinfo) + return -EINVAL; + t = _IOC_NR(cmd) & ABS_MAX; if (copy_from_user(&abs, p, min_t(size_t, -- cgit v1.2.3 From f9ce6eb5b6fa8cbcf0a0fb7c5f4203f94730fc52 Mon Sep 17 00:00:00 2001 From: Daniel Mack Date: Mon, 18 Oct 2010 08:43:50 -0700 Subject: Input: evdev - fix EVIOCSABS regression 448cd16 ("Input: evdev - rearrange ioctl handling") broke EVIOCSABS by checking for the wrong direction bit. Signed-off-by: Daniel Mack Reported-by: Sven Neumann Tested-by: Sven Neumann Signed-off-by: Dmitry Torokhov --- drivers/input/evdev.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/input/evdev.c b/drivers/input/evdev.c index afb64cf3748..9ddafc30f43 100644 --- a/drivers/input/evdev.c +++ b/drivers/input/evdev.c @@ -683,7 +683,7 @@ static long evdev_do_ioctl(struct file *file, unsigned int cmd, } } - if (_IOC_DIR(cmd) == _IOC_READ) { + if (_IOC_DIR(cmd) == _IOC_WRITE) { if ((_IOC_NR(cmd) & ~ABS_MAX) == _IOC_NR(EVIOCSABS(0))) { -- cgit v1.2.3 From 062ab57b2f8439ab506645cf6f29432e7c61497c Mon Sep 17 00:00:00 2001 From: Al Viro Date: Tue, 28 Sep 2010 18:50:17 +0100 Subject: MIPS: Don't block signals if we'd failed to setup a sigframe Signed-off-by: Al Viro Cc: linux-kernel@vger.kernel.org Cc: linux-arch@vger.kernel.org Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/1696/ Signed-off-by: Ralf Baechle --- arch/mips/kernel/signal.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/mips/kernel/signal.c b/arch/mips/kernel/signal.c index 2099d5a4c4b..b3273aeaeed 100644 --- a/arch/mips/kernel/signal.c +++ b/arch/mips/kernel/signal.c @@ -575,6 +575,9 @@ static int handle_signal(unsigned long sig, siginfo_t *info, ret = abi->setup_frame(vdso + abi->signal_return_offset, ka, regs, sig, oldset); + if (ret) + return ret; + spin_lock_irq(¤t->sighand->siglock); sigorsets(¤t->blocked, ¤t->blocked, &ka->sa.sa_mask); if (!(ka->sa.sa_flags & SA_NODEFER)) -- cgit v1.2.3 From e5b377a8fb7b05f27647698ac739a0504cb2bf80 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Tue, 28 Sep 2010 18:50:27 +0100 Subject: MIPS: secure_computing, syscall audit: syscall number should in r2, not r0. As it is, audit_syscall_entry() and secure_computing() get the bogus value (0, in fact) Signed-off-by: Al Viro Cc: linux-kernel@vger.kernel.org Cc: linux-arch@vger.kernel.org Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/1697/ Signed-off-by: Ralf Baechle --- arch/mips/kernel/ptrace.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/mips/kernel/ptrace.c b/arch/mips/kernel/ptrace.c index c51b95ff864..c8777333e19 100644 --- a/arch/mips/kernel/ptrace.c +++ b/arch/mips/kernel/ptrace.c @@ -536,7 +536,7 @@ asmlinkage void do_syscall_trace(struct pt_regs *regs, int entryexit) { /* do the secure computing check first */ if (!entryexit) - secure_computing(regs->regs[0]); + secure_computing(regs->regs[2]); if (unlikely(current->audit_context) && entryexit) audit_syscall_exit(AUDITSC_RESULT(regs->regs[2]), @@ -565,7 +565,7 @@ asmlinkage void do_syscall_trace(struct pt_regs *regs, int entryexit) out: if (unlikely(current->audit_context) && !entryexit) - audit_syscall_entry(audit_arch(), regs->regs[0], + audit_syscall_entry(audit_arch(), regs->regs[2], regs->regs[4], regs->regs[5], regs->regs[6], regs->regs[7]); } -- cgit v1.2.3 From 8f5a00eb422ed86e77bb8f67e08b9fe6d30f679a Mon Sep 17 00:00:00 2001 From: Al Viro Date: Tue, 28 Sep 2010 18:50:37 +0100 Subject: MIPS: Sanitize restart logics Put the original syscall number into ->regs[0] when we leave syscall with error. Use it in restart logics. Everything else will have it 0 since we pass through SAVE_SOME on all the ways in. Note that in places like bad_stack and inllegal_syscall we leave it 0 - it's not restartable. Signed-off-by: Al Viro Cc: linux-kernel@vger.kernel.org Cc: linux-arch@vger.kernel.org Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/1698/ Signed-off-by: Ralf Baechle --- arch/mips/kernel/branch.c | 1 - arch/mips/kernel/scall32-o32.S | 9 ++++----- arch/mips/kernel/scall64-64.S | 7 ++++--- arch/mips/kernel/scall64-n32.S | 6 ++++-- arch/mips/kernel/scall64-o32.S | 7 ++++--- arch/mips/kernel/signal.c | 37 ++++++++++++++++++------------------- arch/mips/kernel/unaligned.c | 2 -- 7 files changed, 34 insertions(+), 35 deletions(-) diff --git a/arch/mips/kernel/branch.c b/arch/mips/kernel/branch.c index 0176ed015c8..32103cc2a25 100644 --- a/arch/mips/kernel/branch.c +++ b/arch/mips/kernel/branch.c @@ -40,7 +40,6 @@ int __compute_return_epc(struct pt_regs *regs) return -EFAULT; } - regs->regs[0] = 0; switch (insn.i_format.opcode) { /* * jr and jalr are in r_format format. diff --git a/arch/mips/kernel/scall32-o32.S b/arch/mips/kernel/scall32-o32.S index 17202bbe843..73a061e8553 100644 --- a/arch/mips/kernel/scall32-o32.S +++ b/arch/mips/kernel/scall32-o32.S @@ -63,9 +63,9 @@ stack_done: sw t0, PT_R7(sp) # set error flag beqz t0, 1f + lw t1, PT_R2(sp) # syscall number negu v0 # error - sw v0, PT_R0(sp) # set flag for syscall - # restarting + sw t1, PT_R0(sp) # save it for syscall restarting 1: sw v0, PT_R2(sp) # result o32_syscall_exit: @@ -104,9 +104,9 @@ syscall_trace_entry: sw t0, PT_R7(sp) # set error flag beqz t0, 1f + lw t1, PT_R2(sp) # syscall number negu v0 # error - sw v0, PT_R0(sp) # set flag for syscall - # restarting + sw t1, PT_R0(sp) # save it for syscall restarting 1: sw v0, PT_R2(sp) # result j syscall_exit @@ -170,7 +170,6 @@ stackargs: */ bad_stack: negu v0 # error - sw v0, PT_R0(sp) sw v0, PT_R2(sp) li t0, 1 # set error flag sw t0, PT_R7(sp) diff --git a/arch/mips/kernel/scall64-64.S b/arch/mips/kernel/scall64-64.S index a8a6c596eb0..eb0bb73172c 100644 --- a/arch/mips/kernel/scall64-64.S +++ b/arch/mips/kernel/scall64-64.S @@ -66,9 +66,9 @@ NESTED(handle_sys64, PT_SIZE, sp) sd t0, PT_R7(sp) # set error flag beqz t0, 1f + ld t1, PT_R2(sp) # syscall number dnegu v0 # error - sd v0, PT_R0(sp) # set flag for syscall - # restarting + sd t1, PT_R0(sp) # save it for syscall restarting 1: sd v0, PT_R2(sp) # result n64_syscall_exit: @@ -109,8 +109,9 @@ syscall_trace_entry: sd t0, PT_R7(sp) # set error flag beqz t0, 1f + ld t1, PT_R2(sp) # syscall number dnegu v0 # error - sd v0, PT_R0(sp) # set flag for syscall restarting + sd t1, PT_R0(sp) # save it for syscall restarting 1: sd v0, PT_R2(sp) # result j syscall_exit diff --git a/arch/mips/kernel/scall64-n32.S b/arch/mips/kernel/scall64-n32.S index a3d66137731..4da3fafaa31 100644 --- a/arch/mips/kernel/scall64-n32.S +++ b/arch/mips/kernel/scall64-n32.S @@ -65,8 +65,9 @@ NESTED(handle_sysn32, PT_SIZE, sp) sd t0, PT_R7(sp) # set error flag beqz t0, 1f + ld t1, PT_R2(sp) # syscall number dnegu v0 # error - sd v0, PT_R0(sp) # set flag for syscall restarting + sd t1, PT_R0(sp) # save it for syscall restarting 1: sd v0, PT_R2(sp) # result local_irq_disable # make sure need_resched and @@ -106,8 +107,9 @@ n32_syscall_trace_entry: sd t0, PT_R7(sp) # set error flag beqz t0, 1f + ld t1, PT_R2(sp) # syscall number dnegu v0 # error - sd v0, PT_R0(sp) # set flag for syscall restarting + sd t1, PT_R0(sp) # save it for syscall restarting 1: sd v0, PT_R2(sp) # result j syscall_exit diff --git a/arch/mips/kernel/scall64-o32.S b/arch/mips/kernel/scall64-o32.S index 813689ef238..7ce0a368562 100644 --- a/arch/mips/kernel/scall64-o32.S +++ b/arch/mips/kernel/scall64-o32.S @@ -93,8 +93,9 @@ NESTED(handle_sys, PT_SIZE, sp) sd t0, PT_R7(sp) # set error flag beqz t0, 1f + ld t1, PT_R2(sp) # syscall number dnegu v0 # error - sd v0, PT_R0(sp) # flag for syscall restarting + sd t1, PT_R0(sp) # save it for syscall restarting 1: sd v0, PT_R2(sp) # result o32_syscall_exit: @@ -142,8 +143,9 @@ trace_a_syscall: sd t0, PT_R7(sp) # set error flag beqz t0, 1f + ld t1, PT_R2(sp) # syscall number dnegu v0 # error - sd v0, PT_R0(sp) # set flag for syscall restarting + sd t1, PT_R0(sp) # save it for syscall restarting 1: sd v0, PT_R2(sp) # result j syscall_exit @@ -155,7 +157,6 @@ trace_a_syscall: */ bad_stack: dnegu v0 # error - sd v0, PT_R0(sp) sd v0, PT_R2(sp) li t0, 1 # set error flag sd t0, PT_R7(sp) diff --git a/arch/mips/kernel/signal.c b/arch/mips/kernel/signal.c index b3273aeaeed..604f077bb5b 100644 --- a/arch/mips/kernel/signal.c +++ b/arch/mips/kernel/signal.c @@ -550,23 +550,26 @@ static int handle_signal(unsigned long sig, siginfo_t *info, struct mips_abi *abi = current->thread.abi; void *vdso = current->mm->context.vdso; - switch(regs->regs[0]) { - case ERESTART_RESTARTBLOCK: - case ERESTARTNOHAND: - regs->regs[2] = EINTR; - break; - case ERESTARTSYS: - if (!(ka->sa.sa_flags & SA_RESTART)) { + if (regs->regs[0]) { + switch(regs->regs[2]) { + case ERESTART_RESTARTBLOCK: + case ERESTARTNOHAND: regs->regs[2] = EINTR; break; + case ERESTARTSYS: + if (!(ka->sa.sa_flags & SA_RESTART)) { + regs->regs[2] = EINTR; + break; + } + /* fallthrough */ + case ERESTARTNOINTR: + regs->regs[7] = regs->regs[26]; + regs->regs[2] = regs->regs[0]; + regs->cp0_epc -= 4; } - /* fallthrough */ - case ERESTARTNOINTR: /* Userland will reload $v0. */ - regs->regs[7] = regs->regs[26]; - regs->cp0_epc -= 8; - } - regs->regs[0] = 0; /* Don't deal with this again. */ + regs->regs[0] = 0; /* Don't deal with this again. */ + } if (sig_uses_siginfo(ka)) ret = abi->setup_rt_frame(vdso + abi->rt_signal_return_offset, @@ -625,17 +628,13 @@ static void do_signal(struct pt_regs *regs) return; } - /* - * Who's code doesn't conform to the restartable syscall convention - * dies here!!! The li instruction, a single machine instruction, - * must directly be followed by the syscall instruction. - */ if (regs->regs[0]) { if (regs->regs[2] == ERESTARTNOHAND || regs->regs[2] == ERESTARTSYS || regs->regs[2] == ERESTARTNOINTR) { + regs->regs[2] = regs->regs[0]; regs->regs[7] = regs->regs[26]; - regs->cp0_epc -= 8; + regs->cp0_epc -= 4; } if (regs->regs[2] == ERESTART_RESTARTBLOCK) { regs->regs[2] = current->thread.abi->restart; diff --git a/arch/mips/kernel/unaligned.c b/arch/mips/kernel/unaligned.c index 69b039ca8d8..33d5a5ce4a2 100644 --- a/arch/mips/kernel/unaligned.c +++ b/arch/mips/kernel/unaligned.c @@ -109,8 +109,6 @@ static void emulate_load_store_insn(struct pt_regs *regs, unsigned long value; unsigned int res; - regs->regs[0] = 0; - /* * This load never faults. */ -- cgit v1.2.3 From 5b89c0044e048842245193b200b61e5f998abd9a Mon Sep 17 00:00:00 2001 From: Al Viro Date: Tue, 28 Sep 2010 18:50:47 +0100 Subject: MIPS: Fix error values in case of bad_stack We want EFAULT, not - Signed-off-by: Al Viro Cc: linux-kernel@vger.kernel.org Cc: linux-arch@vger.kernel.org Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/1699/ Signed-off-by: Ralf Baechle --- arch/mips/kernel/scall32-o32.S | 2 +- arch/mips/kernel/scall64-o32.S | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/mips/kernel/scall32-o32.S b/arch/mips/kernel/scall32-o32.S index 73a061e8553..84b41797fae 100644 --- a/arch/mips/kernel/scall32-o32.S +++ b/arch/mips/kernel/scall32-o32.S @@ -169,7 +169,7 @@ stackargs: * We probably should handle this case a bit more drastic. */ bad_stack: - negu v0 # error + li v0, EFAULT sw v0, PT_R2(sp) li t0, 1 # set error flag sw t0, PT_R7(sp) diff --git a/arch/mips/kernel/scall64-o32.S b/arch/mips/kernel/scall64-o32.S index 7ce0a368562..d2bc285413d 100644 --- a/arch/mips/kernel/scall64-o32.S +++ b/arch/mips/kernel/scall64-o32.S @@ -156,7 +156,7 @@ trace_a_syscall: * The stackpointer for a call with more than 4 arguments is bad. */ bad_stack: - dnegu v0 # error + li v0, EFAULT sd v0, PT_R2(sp) li t0, 1 # set error flag sd t0, PT_R7(sp) -- cgit v1.2.3 From 4bfb8c5c87bd167640ef5789b22e058e339df804 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Tue, 28 Sep 2010 18:50:57 +0100 Subject: MIPS: do_sigaltstack() expects userland pointers o32 compat does the right thing, native and n32 compat do not... Signed-off-by: Al Viro Cc: linux-kernel@vger.kernel.org Cc: linux-arch@vger.kernel.org Cc: linux-mips@linux-mips.org Patchwork: http://patchwork.linux-mips.org/patch/1700/ Signed-off-by: Ralf Baechle --- arch/mips/kernel/signal.c | 5 +---- arch/mips/kernel/signal_n32.c | 5 +++++ 2 files changed, 6 insertions(+), 4 deletions(-) diff --git a/arch/mips/kernel/signal.c b/arch/mips/kernel/signal.c index 604f077bb5b..5922342bca3 100644 --- a/arch/mips/kernel/signal.c +++ b/arch/mips/kernel/signal.c @@ -390,7 +390,6 @@ asmlinkage void sys_rt_sigreturn(nabi_no_regargs struct pt_regs regs) { struct rt_sigframe __user *frame; sigset_t set; - stack_t st; int sig; frame = (struct rt_sigframe __user *) regs.regs[29]; @@ -411,11 +410,9 @@ asmlinkage void sys_rt_sigreturn(nabi_no_regargs struct pt_regs regs) else if (sig) force_sig(sig, current); - if (__copy_from_user(&st, &frame->rs_uc.uc_stack, sizeof(st))) - goto badframe; /* It is more difficult to avoid calling this function than to call it and ignore errors. */ - do_sigaltstack((stack_t __user *)&st, NULL, regs.regs[29]); + do_sigaltstack(&frame->rs_uc.uc_stack, NULL, regs.regs[29]); /* * Don't let your children do this ... diff --git a/arch/mips/kernel/signal_n32.c b/arch/mips/kernel/signal_n32.c index 2c5df818c65..ee24d814d5b 100644 --- a/arch/mips/kernel/signal_n32.c +++ b/arch/mips/kernel/signal_n32.c @@ -109,6 +109,7 @@ asmlinkage int sysn32_rt_sigsuspend(nabi_no_regargs struct pt_regs regs) asmlinkage void sysn32_rt_sigreturn(nabi_no_regargs struct pt_regs regs) { struct rt_sigframe_n32 __user *frame; + mm_segment_t old_fs; sigset_t set; stack_t st; s32 sp; @@ -143,7 +144,11 @@ asmlinkage void sysn32_rt_sigreturn(nabi_no_regargs struct pt_regs regs) /* It is more difficult to avoid calling this function than to call it and ignore errors. */ + old_fs = get_fs(); + set_fs(KERNEL_DS); do_sigaltstack((stack_t __user *)&st, NULL, regs.regs[29]); + set_fs(old_fs); + /* * Don't let your children do this ... -- cgit v1.2.3 From ec3352925b74df8043131b535794f39e2516f614 Mon Sep 17 00:00:00 2001 From: Wu Zhangjin Date: Wed, 22 Sep 2010 14:03:57 +0800 Subject: MIPS: Remove all generated vmlinuz* files on "make clean" [Ralf: I changed the patch to explicitly list all files to be deleted out of paranoia.] Signed-off-by: Wu Zhangjin Patchwork: http://patchwork.linux-mips.org/patch/1590/ Signed-off-by: Ralf Baechle --- arch/mips/boot/compressed/Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/mips/boot/compressed/Makefile b/arch/mips/boot/compressed/Makefile index ed9bb709c9a..4df4c77d272 100644 --- a/arch/mips/boot/compressed/Makefile +++ b/arch/mips/boot/compressed/Makefile @@ -105,4 +105,4 @@ OBJCOPYFLAGS_vmlinuz.srec := $(OBJCOPYFLAGS) -S -O srec vmlinuz.srec: vmlinuz $(call cmd,objcopy) -clean-files := $(objtree)/vmlinuz.* +clean-files := $(objtree)/vmlinuz $(objtree)/vmlinuz.{32,ecoff,bin,srec} -- cgit v1.2.3 From 063c13a5adbd0ab3110cbefcf9ba5aeb103a84ac Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Mon, 18 Oct 2010 01:41:39 +0900 Subject: MIPS: 32-bit: Fix build failure in asm/fcntl.h CC security/integrity/ima/ima_fs.o In file included from linux/include/linux/fcntl.h:4:0, from linux/security/integrity/ima/ima_fs.c:18: linux/arch/mips/include/asm/fcntl.h:63:2: error: expected specifier-qualifier-list before 'off_t' make[3]: *** [security/integrity/ima/ima_fs.o] Error 1 make[2]: *** [security/integrity/ima/ima_fs.o] Error 2 make[1]: *** [sub-make] Error 2 make: *** [all] Error 2 Signed-off-by: Namhyung Kim Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/1715/ Signed-off-by: Ralf Baechle --- arch/mips/include/asm/fcntl.h | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/mips/include/asm/fcntl.h b/arch/mips/include/asm/fcntl.h index e482fe90fe8..75eddedcfc3 100644 --- a/arch/mips/include/asm/fcntl.h +++ b/arch/mips/include/asm/fcntl.h @@ -56,6 +56,7 @@ */ #ifdef CONFIG_32BIT +#include struct flock { short l_type; -- cgit v1.2.3 From a35bee8a2748abe9a40865f477aba0a9b85965fd Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Mon, 18 Oct 2010 12:55:21 +0900 Subject: MIPS: Enable ISA_DMA_API config to fix build failure Add ISA_DMA_API config item and select it when GENERIC_ISA_DMA enabled. This fixes build failure on allmodconfig like following: CC sound/isa/es18xx.o sound/isa/es18xx.c: In function 'snd_es18xx_playback1_prepare': sound/isa/es18xx.c:501:9: error: implicit declaration of function 'snd_dma_program' sound/isa/es18xx.c: In function 'snd_es18xx_playback_pointer': sound/isa/es18xx.c:818:3: error: implicit declaration of function 'snd_dma_pointer' make[3]: *** [sound/isa/es18xx.o] Error 1 make[2]: *** [sound/isa/es18xx.o] Error 2 make[1]: *** [sub-make] Error 2 make: *** [all] Error 2 Signed-off-by: Namhyung Kim Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/1717/ Signed-off-by: Ralf Baechle --- arch/mips/Kconfig | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index 3ad59dde485..2d3cf389090 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -880,11 +880,15 @@ config NO_IOPORT config GENERIC_ISA_DMA bool select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n + select ISA_DMA_API config GENERIC_ISA_DMA_SUPPORT_BROKEN bool select GENERIC_ISA_DMA +config ISA_DMA_API + bool + config GENERIC_GPIO bool -- cgit v1.2.3 From 63f1474c69c061f923068a25f136dca0c49cd478 Mon Sep 17 00:00:00 2001 From: Sascha Hauer Date: Mon, 18 Oct 2010 10:16:26 +0200 Subject: mxc_nand: do not depend on disabling the irq in the interrupt handler This patch reverts the driver to enabling/disabling the NFC interrupt mask rather than enabling/disabling the system interrupt. This cleans up the driver so that it doesn't rely on interrupts being disabled within the interrupt handler. For i.MX21 we keep the current behaviour, that is calling enable_irq/disable_irq_nosync to enable/disable interrupts. This patch is based on earlier work by John Ogness. Signed-off-by: Sascha Hauer Acked-by: John Ogness Tested-by: John Ogness Signed-off-by: David Woodhouse Signed-off-by: Linus Torvalds --- drivers/mtd/nand/mxc_nand.c | 92 ++++++++++++++++++++++++++++++++++++++++----- 1 file changed, 83 insertions(+), 9 deletions(-) diff --git a/drivers/mtd/nand/mxc_nand.c b/drivers/mtd/nand/mxc_nand.c index b2828e84d24..214b03afdd4 100644 --- a/drivers/mtd/nand/mxc_nand.c +++ b/drivers/mtd/nand/mxc_nand.c @@ -30,6 +30,8 @@ #include #include #include +#include +#include #include #include @@ -151,7 +153,7 @@ struct mxc_nand_host { int irq; int eccsize; - wait_queue_head_t irq_waitq; + struct completion op_completion; uint8_t *data_buf; unsigned int buf_start; @@ -164,6 +166,7 @@ struct mxc_nand_host { void (*send_read_id)(struct mxc_nand_host *); uint16_t (*get_dev_status)(struct mxc_nand_host *); int (*check_int)(struct mxc_nand_host *); + void (*irq_control)(struct mxc_nand_host *, int); }; /* OOB placement block for use with hardware ecc generation */ @@ -216,9 +219,12 @@ static irqreturn_t mxc_nfc_irq(int irq, void *dev_id) { struct mxc_nand_host *host = dev_id; - disable_irq_nosync(irq); + if (!host->check_int(host)) + return IRQ_NONE; - wake_up(&host->irq_waitq); + host->irq_control(host, 0); + + complete(&host->op_completion); return IRQ_HANDLED; } @@ -245,11 +251,54 @@ static int check_int_v1_v2(struct mxc_nand_host *host) if (!(tmp & NFC_V1_V2_CONFIG2_INT)) return 0; - writew(tmp & ~NFC_V1_V2_CONFIG2_INT, NFC_V1_V2_CONFIG2); + if (!cpu_is_mx21()) + writew(tmp & ~NFC_V1_V2_CONFIG2_INT, NFC_V1_V2_CONFIG2); return 1; } +/* + * It has been observed that the i.MX21 cannot read the CONFIG2:INT bit + * if interrupts are masked (CONFIG1:INT_MSK is set). To handle this, the + * driver can enable/disable the irq line rather than simply masking the + * interrupts. + */ +static void irq_control_mx21(struct mxc_nand_host *host, int activate) +{ + if (activate) + enable_irq(host->irq); + else + disable_irq_nosync(host->irq); +} + +static void irq_control_v1_v2(struct mxc_nand_host *host, int activate) +{ + uint16_t tmp; + + tmp = readw(NFC_V1_V2_CONFIG1); + + if (activate) + tmp &= ~NFC_V1_V2_CONFIG1_INT_MSK; + else + tmp |= NFC_V1_V2_CONFIG1_INT_MSK; + + writew(tmp, NFC_V1_V2_CONFIG1); +} + +static void irq_control_v3(struct mxc_nand_host *host, int activate) +{ + uint32_t tmp; + + tmp = readl(NFC_V3_CONFIG2); + + if (activate) + tmp &= ~NFC_V3_CONFIG2_INT_MSK; + else + tmp |= NFC_V3_CONFIG2_INT_MSK; + + writel(tmp, NFC_V3_CONFIG2); +} + /* This function polls the NANDFC to wait for the basic operation to * complete by checking the INT bit of config2 register. */ @@ -259,10 +308,9 @@ static void wait_op_done(struct mxc_nand_host *host, int useirq) if (useirq) { if (!host->check_int(host)) { - - enable_irq(host->irq); - - wait_event(host->irq_waitq, host->check_int(host)); + INIT_COMPLETION(host->op_completion); + host->irq_control(host, 1); + wait_for_completion(&host->op_completion); } } else { while (max_retries-- > 0) { @@ -799,6 +847,7 @@ static void preset_v3(struct mtd_info *mtd) NFC_V3_CONFIG2_2CMD_PHASES | NFC_V3_CONFIG2_SPAS(mtd->oobsize >> 1) | NFC_V3_CONFIG2_ST_CMD(0x70) | + NFC_V3_CONFIG2_INT_MSK | NFC_V3_CONFIG2_NUM_ADDR_PHASE0; if (chip->ecc.mode == NAND_ECC_HW) @@ -1024,6 +1073,10 @@ static int __init mxcnd_probe(struct platform_device *pdev) host->send_read_id = send_read_id_v1_v2; host->get_dev_status = get_dev_status_v1_v2; host->check_int = check_int_v1_v2; + if (cpu_is_mx21()) + host->irq_control = irq_control_mx21; + else + host->irq_control = irq_control_v1_v2; } if (nfc_is_v21()) { @@ -1062,6 +1115,7 @@ static int __init mxcnd_probe(struct platform_device *pdev) host->send_read_id = send_read_id_v3; host->check_int = check_int_v3; host->get_dev_status = get_dev_status_v3; + host->irq_control = irq_control_v3; oob_smallpage = &nandv2_hw_eccoob_smallpage; oob_largepage = &nandv2_hw_eccoob_largepage; } else @@ -1093,14 +1147,34 @@ static int __init mxcnd_probe(struct platform_device *pdev) this->options |= NAND_USE_FLASH_BBT; } - init_waitqueue_head(&host->irq_waitq); + init_completion(&host->op_completion); host->irq = platform_get_irq(pdev, 0); + /* + * mask the interrupt. For i.MX21 explicitely call + * irq_control_v1_v2 to use the mask bit. We can't call + * disable_irq_nosync() for an interrupt we do not own yet. + */ + if (cpu_is_mx21()) + irq_control_v1_v2(host, 0); + else + host->irq_control(host, 0); + err = request_irq(host->irq, mxc_nfc_irq, IRQF_DISABLED, DRIVER_NAME, host); if (err) goto eirq; + host->irq_control(host, 0); + + /* + * Now that the interrupt is disabled make sure the interrupt + * mask bit is cleared on i.MX21. Otherwise we can't read + * the interrupt status bit on this machine. + */ + if (cpu_is_mx21()) + irq_control_v1_v2(host, 1); + /* first scan to find the device and get the page size */ if (nand_scan_ident(mtd, 1, NULL)) { err = -ENXIO; -- cgit v1.2.3 From e2269308359d5863b6aa1fcb95a425a2ab255f1f Mon Sep 17 00:00:00 2001 From: Ben Hutchings Date: Thu, 14 Oct 2010 17:41:53 +0000 Subject: r6040: Fix multicast filter some more This code has been broken forever, but in several different and creative ways. So far as I can work out, the R6040 MAC filter has 4 exact-match entries, the first of which the driver uses for its assigned unicast address, plus a 64-entry hash-based filter for multicast addresses (maybe unicast as well?). The original version of this code would write the first 4 multicast addresses as exact-match entries from offset 1 (bug #1: there is no entry 4 so this could write to some PHY registers). It would fill the remainder of the exact-match entries with the broadcast address (bug #2: this would overwrite the last used entry). If more than 4 multicast addresses were configured, it would set up the hash table, write some random crap to the MAC control register (bug #3) and finally walk off the end of the list when filling the exact-match entries (bug #4). All of this seems to be pointless, since it sets the promiscuous bit when the interface is made promiscuous or if >4 multicast addresses are enabled, and never clears it (bug #5, masking bug #2). The recent(ish) changes to the multicast list fixed bug #4, but completely removed the limit on iteration over the exact-match entries (bug #6). Bug #4 was reported as and more recently as . Florian Fainelli attempted to fix these in commit 3bcf8229a8c49769e48d3e0bd1e20d8e003f8106, but that actually dealt with bugs #1-3, bug #4 having been fixed in mainline at that point. That commit fixes the most important current bug #6. Signed-off-by: Ben Hutchings Cc: stable@kernel.org [2.6.35 only] Signed-off-by: David S. Miller --- drivers/net/r6040.c | 22 ++++++++++++---------- 1 file changed, 12 insertions(+), 10 deletions(-) diff --git a/drivers/net/r6040.c b/drivers/net/r6040.c index 142c381e1d7..80666f097ce 100644 --- a/drivers/net/r6040.c +++ b/drivers/net/r6040.c @@ -893,16 +893,18 @@ static void r6040_multicast_list(struct net_device *dev) /* Multicast Address 1~4 case */ i = 0; netdev_for_each_mc_addr(ha, dev) { - if (i < MCAST_MAX) { - adrp = (u16 *) ha->addr; - iowrite16(adrp[0], ioaddr + MID_1L + 8 * i); - iowrite16(adrp[1], ioaddr + MID_1M + 8 * i); - iowrite16(adrp[2], ioaddr + MID_1H + 8 * i); - } else { - iowrite16(0xffff, ioaddr + MID_1L + 8 * i); - iowrite16(0xffff, ioaddr + MID_1M + 8 * i); - iowrite16(0xffff, ioaddr + MID_1H + 8 * i); - } + if (i >= MCAST_MAX) + break; + adrp = (u16 *) ha->addr; + iowrite16(adrp[0], ioaddr + MID_1L + 8 * i); + iowrite16(adrp[1], ioaddr + MID_1M + 8 * i); + iowrite16(adrp[2], ioaddr + MID_1H + 8 * i); + i++; + } + while (i < MCAST_MAX) { + iowrite16(0xffff, ioaddr + MID_1L + 8 * i); + iowrite16(0xffff, ioaddr + MID_1M + 8 * i); + iowrite16(0xffff, ioaddr + MID_1H + 8 * i); i++; } } -- cgit v1.2.3 From 9581d442b9058d3699b4be568b6e5eae38a41493 Mon Sep 17 00:00:00 2001 From: Avi Kivity Date: Tue, 19 Oct 2010 16:46:55 +0200 Subject: KVM: Fix fs/gs reload oops with invalid ldt kvm reloads the host's fs and gs blindly, however the underlying segment descriptors may be invalid due to the user modifying the ldt after loading them. Fix by using the safe accessors (loadsegment() and load_gs_index()) instead of home grown unsafe versions. This is CVE-2010-3698. KVM-Stable-Tag. Signed-off-by: Avi Kivity Signed-off-by: Marcelo Tosatti --- arch/x86/include/asm/kvm_host.h | 24 ------------------------ arch/x86/kvm/svm.c | 15 ++++++++++----- arch/x86/kvm/vmx.c | 24 +++++++++--------------- 3 files changed, 19 insertions(+), 44 deletions(-) diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index 502e53f999c..c52e2eb40a1 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -652,20 +652,6 @@ static inline struct kvm_mmu_page *page_header(hpa_t shadow_page) return (struct kvm_mmu_page *)page_private(page); } -static inline u16 kvm_read_fs(void) -{ - u16 seg; - asm("mov %%fs, %0" : "=g"(seg)); - return seg; -} - -static inline u16 kvm_read_gs(void) -{ - u16 seg; - asm("mov %%gs, %0" : "=g"(seg)); - return seg; -} - static inline u16 kvm_read_ldt(void) { u16 ldt; @@ -673,16 +659,6 @@ static inline u16 kvm_read_ldt(void) return ldt; } -static inline void kvm_load_fs(u16 sel) -{ - asm("mov %0, %%fs" : : "rm"(sel)); -} - -static inline void kvm_load_gs(u16 sel) -{ - asm("mov %0, %%gs" : : "rm"(sel)); -} - static inline void kvm_load_ldt(u16 sel) { asm("lldt %0" : : "rm"(sel)); diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c index 81ed28cb36e..8a3f9f64f86 100644 --- a/arch/x86/kvm/svm.c +++ b/arch/x86/kvm/svm.c @@ -3163,8 +3163,8 @@ static void svm_vcpu_run(struct kvm_vcpu *vcpu) sync_lapic_to_cr8(vcpu); save_host_msrs(vcpu); - fs_selector = kvm_read_fs(); - gs_selector = kvm_read_gs(); + savesegment(fs, fs_selector); + savesegment(gs, gs_selector); ldt_selector = kvm_read_ldt(); svm->vmcb->save.cr2 = vcpu->arch.cr2; /* required for live migration with NPT */ @@ -3251,10 +3251,15 @@ static void svm_vcpu_run(struct kvm_vcpu *vcpu) vcpu->arch.regs[VCPU_REGS_RSP] = svm->vmcb->save.rsp; vcpu->arch.regs[VCPU_REGS_RIP] = svm->vmcb->save.rip; - kvm_load_fs(fs_selector); - kvm_load_gs(gs_selector); - kvm_load_ldt(ldt_selector); load_host_msrs(vcpu); + loadsegment(fs, fs_selector); +#ifdef CONFIG_X86_64 + load_gs_index(gs_selector); + wrmsrl(MSR_KERNEL_GS_BASE, current->thread.gs); +#else + loadsegment(gs, gs_selector); +#endif + kvm_load_ldt(ldt_selector); reload_tss(vcpu); diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index 49b25eee25a..7bddfab1201 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -803,7 +803,7 @@ static void vmx_save_host_state(struct kvm_vcpu *vcpu) */ vmx->host_state.ldt_sel = kvm_read_ldt(); vmx->host_state.gs_ldt_reload_needed = vmx->host_state.ldt_sel; - vmx->host_state.fs_sel = kvm_read_fs(); + savesegment(fs, vmx->host_state.fs_sel); if (!(vmx->host_state.fs_sel & 7)) { vmcs_write16(HOST_FS_SELECTOR, vmx->host_state.fs_sel); vmx->host_state.fs_reload_needed = 0; @@ -811,7 +811,7 @@ static void vmx_save_host_state(struct kvm_vcpu *vcpu) vmcs_write16(HOST_FS_SELECTOR, 0); vmx->host_state.fs_reload_needed = 1; } - vmx->host_state.gs_sel = kvm_read_gs(); + savesegment(gs, vmx->host_state.gs_sel); if (!(vmx->host_state.gs_sel & 7)) vmcs_write16(HOST_GS_SELECTOR, vmx->host_state.gs_sel); else { @@ -841,27 +841,21 @@ static void vmx_save_host_state(struct kvm_vcpu *vcpu) static void __vmx_load_host_state(struct vcpu_vmx *vmx) { - unsigned long flags; - if (!vmx->host_state.loaded) return; ++vmx->vcpu.stat.host_state_reload; vmx->host_state.loaded = 0; if (vmx->host_state.fs_reload_needed) - kvm_load_fs(vmx->host_state.fs_sel); + loadsegment(fs, vmx->host_state.fs_sel); if (vmx->host_state.gs_ldt_reload_needed) { kvm_load_ldt(vmx->host_state.ldt_sel); - /* - * If we have to reload gs, we must take care to - * preserve our gs base. - */ - local_irq_save(flags); - kvm_load_gs(vmx->host_state.gs_sel); #ifdef CONFIG_X86_64 - wrmsrl(MSR_GS_BASE, vmcs_readl(HOST_GS_BASE)); + load_gs_index(vmx->host_state.gs_sel); + wrmsrl(MSR_KERNEL_GS_BASE, current->thread.gs); +#else + loadsegment(gs, vmx->host_state.gs_sel); #endif - local_irq_restore(flags); } reload_tss(); #ifdef CONFIG_X86_64 @@ -2589,8 +2583,8 @@ static int vmx_vcpu_setup(struct vcpu_vmx *vmx) vmcs_write16(HOST_CS_SELECTOR, __KERNEL_CS); /* 22.2.4 */ vmcs_write16(HOST_DS_SELECTOR, __KERNEL_DS); /* 22.2.4 */ vmcs_write16(HOST_ES_SELECTOR, __KERNEL_DS); /* 22.2.4 */ - vmcs_write16(HOST_FS_SELECTOR, kvm_read_fs()); /* 22.2.4 */ - vmcs_write16(HOST_GS_SELECTOR, kvm_read_gs()); /* 22.2.4 */ + vmcs_write16(HOST_FS_SELECTOR, 0); /* 22.2.4 */ + vmcs_write16(HOST_GS_SELECTOR, 0); /* 22.2.4 */ vmcs_write16(HOST_SS_SELECTOR, __KERNEL_DS); /* 22.2.4 */ #ifdef CONFIG_X86_64 rdmsrl(MSR_FS_BASE, a); -- cgit v1.2.3 From ad4b2b627c8ac479e842bf586108c7a7fd63264b Mon Sep 17 00:00:00 2001 From: David Daney Date: Mon, 18 Oct 2010 17:51:26 -0700 Subject: MIPS: Repair Kbuild make clean breakage. When running make clean, Kbuild doesn't process the .config file, so nothing generates a platform-y variable. We can get it to descend into the platform directories by setting $(obj-). The dec Platform file was unconditionally setting platform-, obliterating its previous contents and preventing some directories from being cleaned. This is change to an append operation '+=' to allow cavium-octeon to be cleaned. Signed-off-by: David Daney Cc: Sam Ravnborg Patchwork: https://patchwork.linux-mips.org/patch/1718/ Signed-off-by: Ralf Baechle --- arch/mips/Kbuild | 4 ++++ arch/mips/dec/Platform | 2 +- 2 files changed, 5 insertions(+), 1 deletion(-) diff --git a/arch/mips/Kbuild b/arch/mips/Kbuild index e322d65f33a..7dd65cfae83 100644 --- a/arch/mips/Kbuild +++ b/arch/mips/Kbuild @@ -7,6 +7,10 @@ subdir-ccflags-y := -Werror include arch/mips/Kbuild.platforms obj-y := $(platform-y) +# make clean traverses $(obj-) without having included .config, so +# everything ends up here +obj- := $(platform-) + # mips object files # The object files are linked as core-y files would be linked diff --git a/arch/mips/dec/Platform b/arch/mips/dec/Platform index 3adbcbd95db..cf55a6f4e72 100644 --- a/arch/mips/dec/Platform +++ b/arch/mips/dec/Platform @@ -1,7 +1,7 @@ # # DECstation family # -platform-$(CONFIG_MACH_DECSTATION) = dec/ +platform-$(CONFIG_MACH_DECSTATION) += dec/ cflags-$(CONFIG_MACH_DECSTATION) += \ -I$(srctree)/arch/mips/include/asm/mach-dec libs-$(CONFIG_MACH_DECSTATION) += arch/mips/dec/prom/ -- cgit v1.2.3 From 08be7b2bc7393d5cf4beb00aecb5eb9e5cde5f85 Mon Sep 17 00:00:00 2001 From: David Daney Date: Mon, 18 Oct 2010 18:05:49 -0700 Subject: MIPS: jz4740: Fix Kbuild Platform file. The platform specific files should be included via the platform-y variable. Signed-off-by: David Daney Cc: Lars-Peter Clausen Patchwork: https://patchwork.linux-mips.org/patch/1719/ Signed-off-by: Ralf Baechle --- arch/mips/jz4740/Platform | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/mips/jz4740/Platform b/arch/mips/jz4740/Platform index 6a97230e3d0..ba91be9c21e 100644 --- a/arch/mips/jz4740/Platform +++ b/arch/mips/jz4740/Platform @@ -1,3 +1,3 @@ -core-$(CONFIG_MACH_JZ4740) += arch/mips/jz4740/ +platform-$(CONFIG_MACH_JZ4740) += jz4740/ cflags-$(CONFIG_MACH_JZ4740) += -I$(srctree)/arch/mips/include/asm/mach-jz4740 load-$(CONFIG_MACH_JZ4740) += 0xffffffff80010000 -- cgit v1.2.3 From 6cc0cc4a35337b48e09c82c5f3fb83534884fca8 Mon Sep 17 00:00:00 2001 From: Julia Lawall Date: Fri, 15 Oct 2010 15:00:09 +0200 Subject: SERIAL: ioc3_serial: Return -ENOMEM on memory allocation failure In this code, 0 is returned on memory allocation failure, even though other failures return -ENOMEM or other similar values. A simplified version of the semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // @@ expression ret; expression x,e1,e2,e3; @@ ret = 0 ... when != ret = e1 *x = \(kmalloc\|kcalloc\|kzalloc\)(...) ... when != ret = e2 if (x == NULL) { ... when != ret = e3 return ret; } // Signed-off-by: Julia Lawall To: Pat Gefre Cc: kernel-janitors@vger.kernel.org Cc: linux-ia64@vger.kernel.org Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/1704/ Signed-off-by: Ralf Baechle --- drivers/serial/ioc3_serial.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/serial/ioc3_serial.c b/drivers/serial/ioc3_serial.c index 93de907b120..800c5460233 100644 --- a/drivers/serial/ioc3_serial.c +++ b/drivers/serial/ioc3_serial.c @@ -2044,6 +2044,7 @@ ioc3uart_probe(struct ioc3_submodule *is, struct ioc3_driver_data *idd) if (!port) { printk(KERN_WARNING "IOC3 serial memory not available for port\n"); + ret = -ENOMEM; goto out4; } spin_lock_init(&port->ip_lock); -- cgit v1.2.3 From d39e072166493cbae3840ecfcf2b34bea0d2bebe Mon Sep 17 00:00:00 2001 From: Ralf Baechle Date: Tue, 19 Oct 2010 18:32:41 +0100 Subject: MAINTAINERS: Change list for ioc_serial to linux-serial. IOC3 is also being used on SGI MIPS systems but this particular driver is only being used on IA64 systems so linux-mips made no sense as a list. Pat also thinks linux-serial@vger.kernel.org is the better list. Signed-off-by: Ralf Baechle --- MAINTAINERS | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/MAINTAINERS b/MAINTAINERS index f46d8e66333..1117403dba1 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -3140,7 +3140,7 @@ F: drivers/net/ioc3-eth.c IOC3 SERIAL DRIVER M: Pat Gefre -L: linux-mips@linux-mips.org +L: linux-serial@vger.kernel.org S: Maintained F: drivers/serial/ioc3_serial.c -- cgit v1.2.3 From e2cc502c3f71d8de812893527dc435e61b7fe604 Mon Sep 17 00:00:00 2001 From: Michel Thebeau Date: Tue, 28 Sep 2010 14:15:37 -0400 Subject: MIPS: O32 compat/N32: Fix to use compat syscall wrappers for AIO syscalls. [Ralf: Michel's original patch only fixed N32; I replicated the same fix for O32.] Signed-off-by: Michel Thebeau Cc: paul.gortmaker@windriver.com Cc: bruce.ashfield@windriver.com Signed-off-by: Ralf Baechle --- arch/mips/kernel/scall64-n32.S | 6 +++--- arch/mips/kernel/scall64-o32.S | 6 +++--- 2 files changed, 6 insertions(+), 6 deletions(-) diff --git a/arch/mips/kernel/scall64-n32.S b/arch/mips/kernel/scall64-n32.S index a3d66137731..79c27d1f5f9 100644 --- a/arch/mips/kernel/scall64-n32.S +++ b/arch/mips/kernel/scall64-n32.S @@ -320,10 +320,10 @@ EXPORT(sysn32_call_table) PTR sys_cacheflush PTR sys_cachectl PTR sys_sysmips - PTR sys_io_setup /* 6200 */ + PTR compat_sys_io_setup /* 6200 */ PTR sys_io_destroy - PTR sys_io_getevents - PTR sys_io_submit + PTR compat_sys_io_getevents + PTR compat_sys_io_submit PTR sys_io_cancel PTR sys_exit_group /* 6205 */ PTR sys_lookup_dcookie diff --git a/arch/mips/kernel/scall64-o32.S b/arch/mips/kernel/scall64-o32.S index 813689ef238..c2aa30ad970 100644 --- a/arch/mips/kernel/scall64-o32.S +++ b/arch/mips/kernel/scall64-o32.S @@ -444,10 +444,10 @@ sys_call_table: PTR compat_sys_futex PTR compat_sys_sched_setaffinity PTR compat_sys_sched_getaffinity /* 4240 */ - PTR sys_io_setup + PTR compat_sys_io_setup PTR sys_io_destroy - PTR sys_io_getevents - PTR sys_io_submit + PTR compat_sys_io_getevents + PTR compat_sys_io_submit PTR sys_io_cancel /* 4245 */ PTR sys_exit_group PTR sys32_lookup_dcookie -- cgit v1.2.3 From 531295e63be8c2b8b909d7400739e8b8df60d61f Mon Sep 17 00:00:00 2001 From: Amit Shah Date: Wed, 20 Oct 2010 13:45:43 +1030 Subject: virtio: console: Don't block entire guest if host doesn't read data If the host is slow in reading data or doesn't read data at all, blocking write calls not only blocked the program that called write() but the entire guest itself. To overcome this, let's not block till the host signals it has given back the virtio ring element we passed it. Instead, send the buffer to the host and return to userspace. This operation then becomes similar to how non-blocking writes work, so let's use the existing code for this path as well. This code change also ensures blocking write calls do get blocked if there's not enough room in the virtio ring as well as they don't return -EAGAIN to userspace. Signed-off-by: Amit Shah Acked-by: Hans de Goede CC: stable@kernel.org Signed-off-by: Rusty Russell Signed-off-by: Linus Torvalds --- drivers/char/virtio_console.c | 17 ++++++++++++++--- 1 file changed, 14 insertions(+), 3 deletions(-) diff --git a/drivers/char/virtio_console.c b/drivers/char/virtio_console.c index c810481a5bc..0f69c5ec0ec 100644 --- a/drivers/char/virtio_console.c +++ b/drivers/char/virtio_console.c @@ -459,9 +459,12 @@ static ssize_t send_buf(struct port *port, void *in_buf, size_t in_count, /* * Wait till the host acknowledges it pushed out the data we - * sent. This is done for ports in blocking mode or for data - * from the hvc_console; the tty operations are performed with - * spinlocks held so we can't sleep here. + * sent. This is done for data from the hvc_console; the tty + * operations are performed with spinlocks held so we can't + * sleep here. An alternative would be to copy the data to a + * buffer and relax the spinning requirement. The downside is + * we need to kmalloc a GFP_ATOMIC buffer each time the + * console driver writes something out. */ while (!virtqueue_get_buf(out_vq, &len)) cpu_relax(); @@ -626,6 +629,14 @@ static ssize_t port_fops_write(struct file *filp, const char __user *ubuf, goto free_buf; } + /* + * We now ask send_buf() to not spin for generic ports -- we + * can re-use the same code path that non-blocking file + * descriptors take for blocking file descriptors since the + * wait is already done and we're certain the write will go + * through to the host. + */ + nonblock = true; ret = send_buf(port, buf, count, nonblock); if (nonblock && ret > 0) -- cgit v1.2.3 From f6f94e2ab1b33f0082ac22d71f66385a60d8157f Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Wed, 20 Oct 2010 13:30:22 -0700 Subject: Linux 2.6.36 --- Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Makefile b/Makefile index 7583116e5d9..860c26af52c 100644 --- a/Makefile +++ b/Makefile @@ -1,7 +1,7 @@ VERSION = 2 PATCHLEVEL = 6 SUBLEVEL = 36 -EXTRAVERSION = -rc8 +EXTRAVERSION = NAME = Flesh-Eating Bats with Fangs # *DOCUMENTATION* -- cgit v1.2.3 From d2ed817766987fd05e69b7da65d4861b38f1aa2a Mon Sep 17 00:00:00 2001 From: Ben Greear Date: Thu, 21 Oct 2010 04:06:29 -0700 Subject: net/core: Allow tagged VLAN packets to flow through VETH devices. When there are VLANs on a VETH device, the packets being transmitted through the VETH device may be 4 bytes bigger than MTU. A check in dev_forward_skb did not take this into account and so dropped these packets. This patch is needed at least as far back as 2.6.34.7 and should be considered for -stable. Signed-off-by: Ben Greear Signed-off-by: David S. Miller --- net/core/dev.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/core/dev.c b/net/core/dev.c index 660dd41aaaa..8e07109cc0e 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -1485,7 +1485,7 @@ int dev_forward_skb(struct net_device *dev, struct sk_buff *skb) nf_reset(skb); if (!(dev->flags & IFF_UP) || - (skb->len > (dev->mtu + dev->hard_header_len))) { + (skb->len > (dev->mtu + dev->hard_header_len + VLAN_HLEN))) { kfree_skb(skb); return NET_RX_DROP; } -- cgit v1.2.3 From 8c974438085d2c81b006daeaab8801eedbd19758 Mon Sep 17 00:00:00 2001 From: Neil Horman Date: Thu, 21 Oct 2010 01:06:15 +0000 Subject: Revert c6537d6742985da1fbf12ae26cde6a096fd35b5c Backout the tipc changes to the flags int he subscription message. These changees, while reasonable on the surface, interefere with user space ABI compatibility which is a no-no. This was part of the changes to fix the endianess issues in the TIPC protocol, which would be really nice to do but we need to do so in a way that is backwards compatible with user space. Signed-off-by: Neil Horman Signed-off-by: David S. Miller --- include/linux/tipc.h | 30 ++++++++++++++++++------------ net/tipc/subscr.c | 15 +++++---------- 2 files changed, 23 insertions(+), 22 deletions(-) diff --git a/include/linux/tipc.h b/include/linux/tipc.h index 181c8d0e6f7..d10614b29d5 100644 --- a/include/linux/tipc.h +++ b/include/linux/tipc.h @@ -127,17 +127,23 @@ static inline unsigned int tipc_node(__u32 addr) * TIPC topology subscription service definitions */ -#define TIPC_SUB_SERVICE 0x00 /* Filter for service availability */ -#define TIPC_SUB_PORTS 0x01 /* Filter for port availability */ -#define TIPC_SUB_CANCEL 0x04 /* Cancel a subscription */ +#define TIPC_SUB_PORTS 0x01 /* filter for port availability */ +#define TIPC_SUB_SERVICE 0x02 /* filter for service availability */ +#define TIPC_SUB_CANCEL 0x04 /* cancel a subscription */ +#if 0 +/* The following filter options are not currently implemented */ +#define TIPC_SUB_NO_BIND_EVTS 0x04 /* filter out "publish" events */ +#define TIPC_SUB_NO_UNBIND_EVTS 0x08 /* filter out "withdraw" events */ +#define TIPC_SUB_SINGLE_EVT 0x10 /* expire after first event */ +#endif #define TIPC_WAIT_FOREVER ~0 /* timeout for permanent subscription */ struct tipc_subscr { - struct tipc_name_seq seq; /* NBO. Name sequence of interest */ - __u32 timeout; /* NBO. Subscription duration (in ms) */ - __u32 filter; /* NBO. Bitmask of filter options */ - char usr_handle[8]; /* Opaque. Available for subscriber use */ + struct tipc_name_seq seq; /* name sequence of interest */ + __u32 timeout; /* subscription duration (in ms) */ + __u32 filter; /* bitmask of filter options */ + char usr_handle[8]; /* available for subscriber use */ }; #define TIPC_PUBLISHED 1 /* publication event */ @@ -145,11 +151,11 @@ struct tipc_subscr { #define TIPC_SUBSCR_TIMEOUT 3 /* subscription timeout event */ struct tipc_event { - __u32 event; /* NBO. Event type, as defined above */ - __u32 found_lower; /* NBO. Matching name seq instances */ - __u32 found_upper; /* " " " " " */ - struct tipc_portid port; /* NBO. Associated port */ - struct tipc_subscr s; /* Original, associated subscription */ + __u32 event; /* event type */ + __u32 found_lower; /* matching name seq instances */ + __u32 found_upper; /* " " " " */ + struct tipc_portid port; /* associated port */ + struct tipc_subscr s; /* associated subscription */ }; /* diff --git a/net/tipc/subscr.c b/net/tipc/subscr.c index ab6eab4c45e..ff123e56114 100644 --- a/net/tipc/subscr.c +++ b/net/tipc/subscr.c @@ -274,7 +274,7 @@ static void subscr_cancel(struct tipc_subscr *s, { struct subscription *sub; struct subscription *sub_temp; - __u32 type, lower, upper, timeout, filter; + __u32 type, lower, upper; int found = 0; /* Find first matching subscription, exit if not found */ @@ -282,18 +282,12 @@ static void subscr_cancel(struct tipc_subscr *s, type = ntohl(s->seq.type); lower = ntohl(s->seq.lower); upper = ntohl(s->seq.upper); - timeout = ntohl(s->timeout); - filter = ntohl(s->filter) & ~TIPC_SUB_CANCEL; list_for_each_entry_safe(sub, sub_temp, &subscriber->subscription_list, subscription_list) { if ((type == sub->seq.type) && (lower == sub->seq.lower) && - (upper == sub->seq.upper) && - (timeout == sub->timeout) && - (filter == sub->filter) && - !memcmp(s->usr_handle,sub->evt.s.usr_handle, - sizeof(s->usr_handle)) ){ + (upper == sub->seq.upper)) { found = 1; break; } @@ -310,7 +304,7 @@ static void subscr_cancel(struct tipc_subscr *s, k_term_timer(&sub->timer); spin_lock_bh(subscriber->lock); } - dbg("Cancel: removing sub %u,%u,%u from subscriber %p list\n", + dbg("Cancel: removing sub %u,%u,%u from subscriber %x list\n", sub->seq.type, sub->seq.lower, sub->seq.upper, subscriber); subscr_del(sub); } @@ -358,7 +352,8 @@ static struct subscription *subscr_subscribe(struct tipc_subscr *s, sub->seq.upper = ntohl(s->seq.upper); sub->timeout = ntohl(s->timeout); sub->filter = ntohl(s->filter); - if ((sub->filter && (sub->filter != TIPC_SUB_PORTS)) || + if ((!(sub->filter & TIPC_SUB_PORTS) == + !(sub->filter & TIPC_SUB_SERVICE)) || (sub->seq.lower > sub->seq.upper)) { warn("Subscription rejected, illegal request\n"); kfree(sub); -- cgit v1.2.3 From db5a753bf198ef7a50e17d2ff358adf37efe8648 Mon Sep 17 00:00:00 2001 From: Neil Horman Date: Thu, 21 Oct 2010 01:06:16 +0000 Subject: Revert d88dca79d3852a3623f606f781e013d61486828a TIPC needs to have its endianess issues fixed. Unfortunately, the format of a subscriber message is passed in directly from user space, so requiring this message to be in network byte order breaks user space ABI. Revert this change until such time as we can determine how to do this in a backwards compatible manner. Signed-off-by: Neil Horman Signed-off-by: David S. Miller --- net/tipc/subscr.c | 57 ++++++++++++++++++++++++++++++++++--------------------- net/tipc/subscr.h | 2 ++ 2 files changed, 37 insertions(+), 22 deletions(-) diff --git a/net/tipc/subscr.c b/net/tipc/subscr.c index ff123e56114..ac91f0dfa14 100644 --- a/net/tipc/subscr.c +++ b/net/tipc/subscr.c @@ -75,6 +75,19 @@ struct top_srv { static struct top_srv topsrv = { 0 }; +/** + * htohl - convert value to endianness used by destination + * @in: value to convert + * @swap: non-zero if endianness must be reversed + * + * Returns converted value + */ + +static u32 htohl(u32 in, int swap) +{ + return swap ? swab32(in) : in; +} + /** * subscr_send_event - send a message containing a tipc_event to the subscriber * @@ -94,11 +107,11 @@ static void subscr_send_event(struct subscription *sub, msg_sect.iov_base = (void *)&sub->evt; msg_sect.iov_len = sizeof(struct tipc_event); - sub->evt.event = htonl(event); - sub->evt.found_lower = htonl(found_lower); - sub->evt.found_upper = htonl(found_upper); - sub->evt.port.ref = htonl(port_ref); - sub->evt.port.node = htonl(node); + sub->evt.event = htohl(event, sub->swap); + sub->evt.found_lower = htohl(found_lower, sub->swap); + sub->evt.found_upper = htohl(found_upper, sub->swap); + sub->evt.port.ref = htohl(port_ref, sub->swap); + sub->evt.port.node = htohl(node, sub->swap); tipc_send(sub->server_ref, 1, &msg_sect); } @@ -274,23 +287,16 @@ static void subscr_cancel(struct tipc_subscr *s, { struct subscription *sub; struct subscription *sub_temp; - __u32 type, lower, upper; int found = 0; /* Find first matching subscription, exit if not found */ - type = ntohl(s->seq.type); - lower = ntohl(s->seq.lower); - upper = ntohl(s->seq.upper); - list_for_each_entry_safe(sub, sub_temp, &subscriber->subscription_list, subscription_list) { - if ((type == sub->seq.type) && - (lower == sub->seq.lower) && - (upper == sub->seq.upper)) { - found = 1; - break; - } + if (!memcmp(s, &sub->evt.s, sizeof(struct tipc_subscr))) { + found = 1; + break; + } } if (!found) return; @@ -319,10 +325,16 @@ static struct subscription *subscr_subscribe(struct tipc_subscr *s, struct subscriber *subscriber) { struct subscription *sub; + int swap; + + /* Determine subscriber's endianness */ + + swap = !(s->filter & (TIPC_SUB_PORTS | TIPC_SUB_SERVICE)); /* Detect & process a subscription cancellation request */ - if (ntohl(s->filter) & TIPC_SUB_CANCEL) { + if (s->filter & htohl(TIPC_SUB_CANCEL, swap)) { + s->filter &= ~htohl(TIPC_SUB_CANCEL, swap); subscr_cancel(s, subscriber); return NULL; } @@ -347,11 +359,11 @@ static struct subscription *subscr_subscribe(struct tipc_subscr *s, /* Initialize subscription object */ - sub->seq.type = ntohl(s->seq.type); - sub->seq.lower = ntohl(s->seq.lower); - sub->seq.upper = ntohl(s->seq.upper); - sub->timeout = ntohl(s->timeout); - sub->filter = ntohl(s->filter); + sub->seq.type = htohl(s->seq.type, swap); + sub->seq.lower = htohl(s->seq.lower, swap); + sub->seq.upper = htohl(s->seq.upper, swap); + sub->timeout = htohl(s->timeout, swap); + sub->filter = htohl(s->filter, swap); if ((!(sub->filter & TIPC_SUB_PORTS) == !(sub->filter & TIPC_SUB_SERVICE)) || (sub->seq.lower > sub->seq.upper)) { @@ -364,6 +376,7 @@ static struct subscription *subscr_subscribe(struct tipc_subscr *s, INIT_LIST_HEAD(&sub->nameseq_list); list_add(&sub->subscription_list, &subscriber->subscription_list); sub->server_ref = subscriber->port_ref; + sub->swap = swap; memcpy(&sub->evt.s, s, sizeof(struct tipc_subscr)); atomic_inc(&topsrv.subscription_count); if (sub->timeout != TIPC_WAIT_FOREVER) { diff --git a/net/tipc/subscr.h b/net/tipc/subscr.h index c20f496d95b..45d89bf4d20 100644 --- a/net/tipc/subscr.h +++ b/net/tipc/subscr.h @@ -53,6 +53,7 @@ typedef void (*tipc_subscr_event) (struct subscription *sub, * @nameseq_list: adjacent subscriptions in name sequence's subscription list * @subscription_list: adjacent subscriptions in subscriber's subscription list * @server_ref: object reference of server port associated with subscription + * @swap: indicates if subscriber uses opposite endianness in its messages * @evt: template for events generated by subscription */ @@ -65,6 +66,7 @@ struct subscription { struct list_head nameseq_list; struct list_head subscription_list; u32 server_ref; + int swap; struct tipc_event evt; }; -- cgit v1.2.3