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2013-03-12w1: fix oops when w1_search is called from netlink connectorMarcin Jurkowski1-1/+2
On Sat, Mar 02, 2013 at 10:45:10AM +0100, Sven Geggus wrote: > This is the bad commit I found doing git bisect: > 04f482faf50535229a5a5c8d629cf963899f857c is the first bad commit > commit 04f482faf50535229a5a5c8d629cf963899f857c > Author: Patrick McHardy <kaber@trash.net> > Date: Mon Mar 28 08:39:36 2011 +0000 Good job. I was too lazy to bisect for bad commit;) Reading the code I found problematic kthread_should_stop call from netlink connector which causes the oops. After applying a patch, I've been testing owfs+w1 setup for nearly two days and it seems to work very reliable (no hangs, no memleaks etc). More detailed description and possible fix is given below: Function w1_search can be called from either kthread or netlink callback. While the former works fine, the latter causes oops due to kthread_should_stop invocation. This patch adds a check if w1_search is serving netlink command, skipping kthread_should_stop invocation if so. Signed-off-by: Marcin Jurkowski <marcin1j@gmail.com> Acked-by: Evgeniy Polyakov <zbr@ioremap.net> Cc: Josh Boyer <jwboyer@gmail.com> Tested-by: Sven Geggus <lists@fuchsschwanzdomain.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: stable <stable@vger.kernel.org> # 3.0+
2013-03-12w1-gpio: fix unused variable warningJohan Hovold1-0/+2
Commit 8a1861d997 ("w1-gpio: Simplify & get rid of defines") removed the compile guards from the device-tree id table, thereby generating a warning when building without device-tree support. Signed-off-by: Johan Hovold <jhovold@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-03-12w1-gpio: remove erroneous __exit and __exit_p()Johan Hovold1-2/+2
Commit 8a1861d997 ("w1-gpio: Simplify & get rid of defines") changed (apparently unknowingly) the driver to a hotpluggable platform-device driver but did not not update the section markers for probe and remove (to __devinit/exit, which have since been removed). A later commit fixed the section mismatch for probe, but left remove marked with __exit. Signed-off-by: Johan Hovold <jhovold@gmail.com> Cc: stable <stable@vger.kernel.org> # 3.8 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-02-28Merge tag 'late-dt' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-socLinus Torvalds1-1/+8
Pull ARM SoC i.MX DT changes from Olof Johansson: "This branch contains of devicetree changes for the Freescale i.MX platform. The base patch of the branch changes the format of the dts files to a slightly different format that makes it easier to do derivative board definitions, but it also introduces a lot of churn in the process since every line of the file is touched. On top of that are a handful of the regular changes; enabling more boards as DT-based instead of legacy board files (mx25pdk), enabling another driver for devicetree and thus adding bindings (onewire), etc. I'm not happy about the churn, and will likely not take it for other platforms in the future." * tag 'late-dt' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (21 commits) ARM: dts: add dtsi for imx6q and imx6dl ARM: dts: rename imx6q.dtsi to imx6qdl.dtsi ARM: dts: i.MX6: Add regulator delay support ARM: dts: Add device tree entry for onewire master on i.MX53 ARM: i.MX53: Add clocks for i.mx53 onewire master. W1: Add device tree support to MXC onewire master. ARM: imx: enable imx6q-cpufreq support ARM: dts: Add apf51 basic support ARM i.MX6: change mxs usbphy clock usage ARM: dts: imx6q: Remove silicon version from SDMA firmware ARM i.MX53: dts: add oftree for MBa53 baseboard ARM i.MX53: add dts for the TQ tqma53 module ARM: dts: imx53: pinctrl update ARM i.MX51 babbage: Add keypad support ARM: dts: imx: Add imx51 KPP entry ARM: dts: imx25-karo-tx25: Put status entry in the end ARM: mx25pdk: Add device tree support ARM: dts: imx: use nodes label in board dts ARM: dts: add missing imx dtb targets ARM: boot: dts: Add an entry for imx27-pdk.dtb ...
2013-02-27w1: add support for DS2413 Dual Channel Addressable SwitchMariusz Bialonczyk4-5/+189
Also fixes some whitespace inconsistency in Kconfig and w1_family.h when DS2408 chip support was added. Signed-off-by: Mariusz Bialonczyk <manio@skyboo.net> Acked-by: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-02-21Merge tag 'char-misc-3.9-rc1' of ↵Linus Torvalds5-100/+90
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc Pull char/misc driver patches from Greg Kroah-Hartman: "Here's the big char/misc driver patches for 3.9-rc1. Nothing major here, just lots of different driver updates (mei, hyperv, ipack, extcon, vmci, etc.). All of these have been in the linux-next tree for a while." * tag 'char-misc-3.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (209 commits) w1: w1_therm: Add force-pullup option for "broken" sensors w1: ds2482: Added 1-Wire pull-up support to the driver vme: add missing put_device() after device_register() fails extcon: max8997: Use workqueue to check cable state after completing boot of platform extcon: max8997: Set default UART/USB path on probe extcon: max8997: Consolidate duplicate code for checking ADC/CHG cable type extcon: max8997: Set default of ADC debounce time during initialization extcon: max8997: Remove duplicate code related to set H/W line path extcon: max8997: Move defined constant to header file extcon: max77693: Make max77693_extcon_cable static extcon: max8997: Remove unreachable code extcon: max8997: Make max8997_extcon_cable static extcon: max77693: Remove unnecessary goto statement to improve readability extcon: max77693: Convert to devm_input_allocate_device() extcon: gpio: Rename filename of extcon-gpio.c according to kernel naming style CREDITS: update email and address of Harald Hoyer extcon: arizona: Use MICDET for final microphone identification extcon: arizona: Always take the first HPDET reading as the final one extcon: arizona: Clear _trig_sts bits after jack detection extcon: arizona: Don't HPDET magic when headphones are enabled ...
2013-02-18w1: w1_therm: Add force-pullup option for "broken" sensorsMichael Arndt1-1/+10
Signed-off-by: Michael Arndt <michael@scriptkiller.de> Acked-by: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-02-18w1: ds2482: Added 1-Wire pull-up support to the driverMichael Arndt1-6/+45
Signed-off-by: Michael Arndt <michael@scriptkiller.de> Acked-by: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-02-10W1: Add device tree support to MXC onewire master.Martin Fuzzey1-1/+8
Signed-off-by: Martin Fuzzey <mfuzzey@parkeon.com> Acked-by: Sascha Hauer <s.hauer@pengutronix.de> Acked-by: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2013-01-30w1-gpio: fix section mismatchHauke Mehrtens1-1/+1
This fixes the following section mismatch: WARNING: drivers/w1/masters/w1-gpio.o(.data+0x188): Section mismatch in reference from the variable w1_gpio_driver to the function .init.text:w1_gpio_probe() The variable w1_gpio_driver references the function __init w1_gpio_probe() If the reference is valid then annotate the variable with __init* or __refdata (see linux/init.h) or name the variable: *_template, *_timer, *_sht, *_ops, *_probe, *_probe_one, *_console Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Acked-by: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-22w1: Convert to devm_ioremap_resource()Thierry Reding1-5/+3
Convert all uses of devm_request_and_ioremap() to the newly introduced devm_ioremap_resource() which provides more consistent error handling. devm_ioremap_resource() provides its own error messages so all explicit error messages can be removed from the failure code paths. Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de> Acked-by: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-15w1_therm: Retries: remove old code add CRCDavid Stevenson1-19/+6
w1_therm includes some obsolete code to detect bad_roms, this is no longer relevant. The retry code is only used for this bad_rom test, however there is a CRC check that detects a bad read, but does not trigger a retry. This patch removes all the bad_rom code and uses the CRC check to trigger retries. Signed-off-by: David Stevenson <david@avoncliff.com> Acked-by: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-15drivers/w1/masters/mxc_w1.c: use devm_ functionsJulia Lawall1-39/+10
The various devm_ functions allocate memory that is released when a driver detaches. This patch uses these functions for data that is allocated in the probe function of a platform device and is only freed in the remove function. At the same time, this fixes two faults. First, mdev, the result of kzalloc, was never freed. Second, on failure of ioremap, 0 was returned. This has been replaced by -EBUSY, which was the failure value for the call to request_mem_region, with which the call to ioremap has been combined. The warning message on failure of ioremap is dropped, because devm_request_and_ioremap already gives such messages on failure. Finally, the initial call to platform_get_resource is moved closer to the call to devm_request_and_ioremap, which takes care of checking whether its result is NULL, implying that a test on the result of this call to platform_get_resource is not needed. Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Acked-by: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-15drivers/w1/masters/ds1wm.c: use devm_ functionsJulia Lawall1-34/+18
The various devm_ functions allocate memory that is released when a driver detaches. This patch uses these functions for data that is allocated in the probe function of a platform device and is only freed in the remove function. Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Acked-by: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-03Drivers: w1: remove last __devexit_p() instanceGreg Kroah-Hartman1-1/+1
This slipped in through the merging of different trees. Remove __devexit_p() use in the mxc_w1 driver. Cc: Evgeniy Polyakov <zbr@ioremap.net> Cc: Fabio Estevam <fabio.estevam@freescale.com> Cc: Bill Pemberton <wfp5p@virginia.edu> Cc: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-12-16ARM: OMAP: Fix drivers to depend on omap for internal devicesTony Lindgren1-0/+1
These devices are not available on other architectures, so let's limit them to omap. If the driver subsystem maintainers want to build test system wide changes without building for each target, it's easy to carry a test patch that just strips out the depends entries from Kconfig files. Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-11-26w1-gpio: Simplify & get rid of definesPantelis Antoniou1-32/+26
There's no reason to have the OF defines; it complicates the driver. There's also no need for the funky platform_driver_probe. Add a few warnings in case there's a failure; helps us find out what went wrong. Signed-off-by: Pantelis Antoniou <panto@antoniou-consulting.com> Signed-off-by: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-11-26w1-gpio: Pinctrl-fyPantelis Antoniou1-0/+7
Enable pinctrl for w1-gpio. Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Pantelis Antoniou <panto@antoniou-consulting.com> Signed-off-by: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-11-21w1: remove CONFIG_HOTPLUG ifdefsBill Pemberton1-7/+0
Remove conditional code based on CONFIG_HOTPLUG being false. It's always on now in preparation of it going away as an option. Signed-off-by: Bill Pemberton <wfp5p@virginia.edu> Cc: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-11-21w1: remove use of __devexitBill Pemberton3-5/+5
CONFIG_HOTPLUG is going away as an option so __devexit is no longer needed. Signed-off-by: Bill Pemberton <wfp5p@virginia.edu> Cc: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-11-21w1: remove use of __devinitBill Pemberton3-5/+5
CONFIG_HOTPLUG is going away as an option so __devinit is no longer needed. Signed-off-by: Bill Pemberton <wfp5p@virginia.edu> Cc: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-11-21w1: remove use of __devexit_pBill Pemberton2-2/+2
CONFIG_HOTPLUG is going away as an option so __devexit_p is no longer needed. Signed-off-by: Bill Pemberton <wfp5p@virginia.edu> Cc: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-11-21w1: mxc_w1: Fix commentFabio Estevam1-1/+1
We are dealing with mxc_w1 registers. While at it use dev_err() instead. Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-11-21w1: mxc_w1: Convert to platform driverFabio Estevam1-14/+2
Using module_platform_driver() makes the code smaller and cleaner. Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-11-21w1: mxc_w1: Adapt the clock name to the new clock frameworkFabio Estevam1-3/+3
With the new i.mx clock framework the mxc_w1 clock is registered as: clk_register_clkdev(clk[owire_gate], NULL, "mxc_w1.0"); So we do not need to pass "owire" string and can use NULL instead. While at it, also fix the clock error handling code. Acked-by: Sascha Hauer <s.hauer@pengutronix.de> Acked-by: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> ----- Changes since v2: - Add Ack's Changes since v1: - Fix clock error handling drivers/w1/masters/mxc_w1.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-10-24w1/ds2482: use module_i2c_driver to simplify the codeWei Yongjun1-12/+1
Use the module_i2c_driver() macro to make the code smaller and a bit simpler. dpatch engine is used to auto generate this patch. (https://github.com/weiyj/dpatch) Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Acked-by: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-10-24drivers/w1/masters: remove CONFIG_EXPERIMENTALKees Cook1-1/+1
This config item has not carried much meaning for a while now and is almost always enabled by default. As agreed during the Linux kernel summit, remove it. CC: Andrew Morton <akpm@linux-foundation.org> CC: Paul Walmsley <paul@pwsan.com> CC: Felipe Balbi <balbi@ti.com> Signed-off-by: Kees Cook <keescook@chromium.org> Acked-by: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-10-01Merge tag 'char-misc-3.6' of ↵Linus Torvalds3-47/+77
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc Pull char/misc driver merge from Greg Kroah-Hartman: "Here is the "big" char/misc driver tree update for the 3.7-rc1 merge window. Nothing major, just a number of driver updates and fixes, all of which have been in the linux-next releases for a while now either in my tree, or in Andrew's (the lis3l driver changes came from his tree last week). Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>" * tag 'char-misc-3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (52 commits) drivers/misc/lis3lv02d/lis3lv02d_i2c.c: add lis3lv02d device tree init drivers/misc/lis3lv02d/lis3lv02d_spi.c: add lis3lv02d device tree init drivers/misc/lis3lv02d: remove lis3lv02d driver DT init drivers/misc/lis3lv02d/lis3lv02d_spi.c: add DT matching table passthru code drivers/misc/lis3lv02d: add generic DT matching code lis3lv02d: fix some comments specific to lis331dlh driver MISC: hpilo, remove pci_disable_device pcmcia: synclink_cs: fix potential tty NULL dereference drivers/char/mmtimer.c: Remove useless kfree drivers/char: removes unnecessary semicolon char/misc: remove CONFIG_EXPERIMENTAL dependencies mei: don't print buffer as a string mei: struct mei_message_data doesn't have to be packed mei: add error messages for open count errors misc: use module_spi_driver tifm: use module_pci_driver misc/at25, dt: Improve at25 SPI eeprom device tree bindings. mei: add lynx point pci device ids mei: fix max number of open handles mei: rename struct pci_dev *mei_device to mei_pdev ...
2012-10-01Merge branch 'for-linus' of ↵Linus Torvalds1-1/+1
git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial Pull the trivial tree from Jiri Kosina: "Tiny usual fixes all over the place" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (34 commits) doc: fix old config name of kprobetrace fs/fs-writeback.c: cleanup riteback_sb_inodes kerneldoc btrfs: fix the commment for the action flags in delayed-ref.h btrfs: fix trivial typo for the comment of BTRFS_FREE_INO_OBJECTID vfs: fix kerneldoc for generic_fh_to_parent() treewide: fix comment/printk/variable typos ipr: fix small coding style issues doc: fix broken utf8 encoding nfs: comment fix platform/x86: fix asus_laptop.wled_type module parameter mfd: printk/comment fixes doc: getdelays.c: remember to close() socket on error in create_nl_socket() doc: aliasing-test: close fd on write error mmc: fix comment typos dma: fix comments spi: fix comment/printk typos in spi Coccinelle: fix typo in memdup_user.cocci tmiofb: missing NULL pointer checks tools: perf: Fix typo in tools/perf tools/testing: fix comment / output typos ...
2012-09-01treewide: fix comment/printk/variable typosAnatol Pomozov1-1/+1
Signed-off-by: Anatol Pomozov <anatol.pomozov@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2012-08-27Merge v3.6-rc3 into 'char-misc-next'Greg Kroah-Hartman3-47/+77
This resolves a conflict in: drivers/misc/mei/interrupt.c Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-08-161-Wire: Add support for the maxim ds1825 temperature sensorRaphael Assenat2-0/+10
This patch adds support for maxim ds1825 based 1-wire temperature sensors. Signed-off-by: Raphael Assenat <raph@8d.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-08-16onewire: w1-gpio: add ext_pullup_enable pin in platform dataDaniel Mack1-1/+17
In the process of porting boards to devicetree implemenation, we should keep information about external circuitry where they belong - the individual drivers. This patch adds a way to specify a GPIO to drive the (optional) external pull-up logic, rather than using a function pointer for that. Signed-off-by: Daniel Mack <zonque@gmail.com> Acked-by: Evgeniy Polyakov <zbr@ioremap.net> Acked-by: Ville Syrjälä <syrjala@sci.fi> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-08-16onewire: w1-gpio: add DT bindingsDaniel Mack1-1/+47
This patch add DT bindings to the w1-gpio driver, along with some documentation on how to use them. Signed-off-by: Daniel Mack <zonque@gmail.com> Acked-by: Evgeniy Polyakov <zbr@ioremap.net> Acked-by: Ville Syrjälä <syrjala@sci.fi> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-08-16w1: omap-hdq: drop ARCH dependencyFelipe Balbi2-4/+0
Let the driver compile everywhere while also removing unnecessary headers. Signed-off-by: Felipe Balbi <balbi@ti.com> Acked-by: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-08-16w1: omap-hdq: remove unnecessary returnFelipe Balbi1-2/+0
trivial patch, no functional changes. Signed-off-by: Felipe Balbi <balbi@ti.com> Acked-by: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-08-16w1: omap-hdq: convert to devm_* functionsFelipe Balbi1-23/+9
this lets us remove a bit of boilerplate code. Signed-off-by: Felipe Balbi <balbi@ti.com> Acked-by: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-08-16w1: omap-hdq: convert to module_platform_driverFelipe Balbi1-13/+1
trivial patch, no functional changes. Signed-off-by: Felipe Balbi <balbi@ti.com> Acked-by: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-08-16w1: omap-hdq: don't hardcode resource sizeFelipe Balbi1-1/+1
we have the helpful resource_size() macro to calculate the size of the memory resource for us, let's use it. Signed-off-by: Felipe Balbi <balbi@ti.com> Acked-by: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-08-16w1: omap-hdq: add section annotation to removeFelipe Balbi1-3/+3
trivial patch, no functional changes. Signed-off-by: Felipe Balbi <balbi@ti.com> Acked-by: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-26Merge tag 'driver-core-3.6-rc1' of ↵Linus Torvalds20-99/+560
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core Pull driver core changes from Greg Kroah-Hartman: "Here's the big driver core pull request for 3.6-rc1. Unlike 3.5, this kernel should be a lot tamer, with the printk changes now settled down. All we have here is some extcon driver updates, w1 driver updates, a few printk cleanups that weren't needed for 3.5, but are good to have now, and some other minor fixes/changes in the driver core. All of these have been in the linux-next releases for a while now. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>" * tag 'driver-core-3.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (38 commits) printk: Export struct log size and member offsets through vmcoreinfo Drivers: hv: Change the hex constant to a decimal constant driver core: don't trigger uevent after failure extcon: MAX77693: Add extcon-max77693 driver to support Maxim MAX77693 MUIC device sysfs: fail dentry revalidation after namespace change fix sysfs: fail dentry revalidation after namespace change extcon: spelling of detach in function doc extcon: arizona: Stop microphone detection if we give up on it extcon: arizona: Update cable reporting calls and split headset PM / Runtime: Do not increment device usage counts before probing kmsg - do not flush partial lines when the console is busy kmsg - export "continuation record" flag to /dev/kmsg kmsg - avoid warning for CONFIG_PRINTK=n compilations kmsg - properly print over-long continuation lines driver-core: Use kobj_to_dev instead of re-implementing it driver-core: Move kobj_to_dev from genhd.h to device.h driver core: Move deferred devices to the end of dpm_list before probing driver core: move uevent call to driver_register driver core: fix shutdown races with probe/remove(v3) Extcon: Arizona: Add driver for Wolfson Arizona class devices ...
2012-06-21W1: OMAP HDQ1W: use runtime PMPaul Walmsley1-65/+13
Convert the OMAP HDQ driver to use runtime PM. Compile- and boot-tested, but not tested in actual use. Signed-off-by: Paul Walmsley <paul@pwsan.com> Cc: NeilBrown <neilb@suse.de> Cc: Evgeniy Polyakov <zbr@ioremap.net> Acked-by: Evgeniy Polyakov <zbr@ioremap.net> Tested-by: NeilBrown <neilb@suse.de>
2012-06-21W1: OMAP HDQ1W: use 32-bit register accessesPaul Walmsley1-4/+4
HDQ/1-wire registers are 32 bits long, even if the register contents fit into 8 bits, so accesses must be 32-bit aligned. Evidently the OMAP2/3 interconnects allowed the driver to get away with 8 bit accesses, but the OMAP4 puts a stop to that: [ 1.488800] Driver for 1-wire Dallas network protocol. [ 1.495025] Bad mode in data abort handler detected [ 1.500122] Internal error: Oops - bad mode: 0 [#1] SMP [ 1.505615] Modules linked in: [ 1.508819] CPU: 0 Not tainted (3.3.0-rc1-00008-g45030e9 #992) [ 1.515289] PC is at 0xffff0018 [ 1.518615] LR is at omap_hdq_probe+0xd4/0x2cc The OMAP4430 ES2 Rev X TRM does warn about this restriction in section 23.2.6.2 "HDQ/1-Wire Registers". Fixes the crash on OMAP4430 ES2 Pandaboard. Tested also on OMAP34xx and OMAP2420; it seems to work fine on those chips, although due to the lack of boards with HDQ/1-wire devices here, a more indepth test was not possible. Signed-off-by: Paul Walmsley <paul@pwsan.com> Cc: NeilBrown <neilb@suse.de> Cc: Evgeniy Polyakov <zbr@ioremap.net> Acked-by: Evgeniy Polyakov <zbr@ioremap.net>
2012-06-21W1: OMAP HDQ1W: allow driver to be built on all OMAP2+Paul Walmsley1-1/+1
Allow the OMAP HDQ1W driver to be built for all OMAP2+ SoCs by adjusting KConfig dependencies. The previous dependency required either SOC_OMAP2430 or ARCH_OMAP3 to be set, but the HDQ IP block is present on OMAP2420 and OMAP44xx SoCs. The driver was still selectable on multi-OMAP kernel configurations, however; so the previous prohibition was rather pointless. Signed-off-by: Paul Walmsley <paul@pwsan.com> Cc: Evgeniy Polyakov <zbr@ioremap.net> Acked-by: Evgeniy Polyakov <zbr@ioremap.net>
2012-06-18w1: Fix a typo in 'hardware' wordOtavio Salvador1-1/+1
Signed-off-by: Otavio Salvador <otavio@ossystems.com.br> Acked-by: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-06-13w1: Add 1-wire slave device driver for DS28E04-100Markus Franke4-0/+484
Signed-off-by: Markus Franke <franm@hrz.tu-chemnitz.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-06-13W1: split master mutex to avoid deadlocks.NeilBrown15-74/+55
The 'mutex' in struct w1_master is use for two very different purposes. Firstly it protects various data structures such as the list of all slaves. Secondly it protects the w1 buss against concurrent accesses. This can lead to deadlocks when the ->probe code called while adding a slave needs to talk on the bus, as is the case for power_supply devices. ds2780 and ds2781 drivers contain a work around to track which process hold the lock simply to avoid this deadlock. bq27000 doesn't have that work around and so deadlocks. There are other possible deadlocks involving sysfs. When removing a device the sysfs s_active lock is held, so the lock that protects the slave list must take precedence over s_active. However when access power_supply attributes via sysfs, the s_active lock must take precedence over the lock that protects accesses to the bus. So to avoid deadlocks between w1 slaves and sysfs, these must be two separate locks. Making them separate means that the work around in ds2780 and ds2781 can be removed. So this patch: - adds a new mutex: "bus_mutex" which serialises access to the bus. - takes in mutex in w1_search and ds1wm_search while they access the bus for searching. The mutex is dropped before calling the callback which adds the slave. - changes all slaves to use bus_mutex instead of mutex to protect access to the bus - removes w1_ds2790_io_nolock and w1_ds2781_io_nolock, and the related code from drivers/power/ds278[01]_battery.c which calls them. Signed-off-by: NeilBrown <neilb@suse.de> Acked-by: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-06-13w1: omap_hdq: use wait_event_timeout to wait for read to complete.NeilBrown1-9/+6
There is no gain in having a loop - there is no risk of missing the interrupt with wait_event_timeout. Signed-off-by: NeilBrown <neilb@suse.de> Acked-by: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-06-13w1: omap_hdq: Fix some error/debug handling.NeilBrown1-7/+8
- some debug messages missed spaces - sometimes no error was returned when it should have been - sometimes a message is printed when there is no error, rather than when there is one. Acked-by: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: NeilBrown <neilb@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-06-13Revert "w1: introduce a slave mutex for serializing IO"Greg Kroah-Hartman3-4/+2
This reverts commit 59d4467be405316916a4087d5b02d99196eeef04. Turns out it was the wrong version, will apply the correct version after this. Reported-by: NeilBrown <neilb@suse.de> Cc: Evgeniy Polyakov <zbr@ioremap.net> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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