diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/ata/ahci.c | 3 | ||||
| -rw-r--r-- | drivers/ata/libata-acpi.c | 10 | ||||
| -rw-r--r-- | drivers/ata/libata-core.c | 80 | ||||
| -rw-r--r-- | drivers/ata/libata-scsi.c | 44 | ||||
| -rw-r--r-- | drivers/ata/libata.h | 3 | ||||
| -rw-r--r-- | drivers/ata/pata_scc.c | 4 | ||||
| -rw-r--r-- | drivers/ata/sata_sil24.c | 3 | ||||
| -rw-r--r-- | drivers/parport/parport_pc.c | 1 | ||||
| -rw-r--r-- | drivers/serial/sunhv.c | 276 | ||||
| -rw-r--r-- | drivers/spi/spidev.c | 2 |
10 files changed, 305 insertions, 121 deletions
diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c index 1ae443d7ab9..e00e1b913d2 100644 --- a/drivers/ata/ahci.c +++ b/drivers/ata/ahci.c @@ -173,7 +173,8 @@ enum { AHCI_FLAG_COMMON = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY | ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA | - ATA_FLAG_SKIP_D2H_BSY, + ATA_FLAG_SKIP_D2H_BSY | + ATA_FLAG_ACPI_SATA, }; struct ahci_cmd_hdr { diff --git a/drivers/ata/libata-acpi.c b/drivers/ata/libata-acpi.c index ed4138e24b0..02236739b40 100644 --- a/drivers/ata/libata-acpi.c +++ b/drivers/ata/libata-acpi.c @@ -321,7 +321,7 @@ static int do_drive_get_GTF(struct ata_device *dev, unsigned int *gtf_length, /* Don't continue if device has no _ADR method. * _GTF is intended for known motherboard devices. */ - if (!(ap->cbl == ATA_CBL_SATA)) { + if (!(ap->flags & ATA_FLAG_ACPI_SATA)) { err = pata_get_dev_handle(gdev, &dev_handle, &pcidevfn); if (err < 0) { if (ata_msg_probe(ap)) @@ -343,7 +343,7 @@ static int do_drive_get_GTF(struct ata_device *dev, unsigned int *gtf_length, /* Get this drive's _ADR info. if not already known. */ if (!dev->obj_handle) { - if (!(ap->cbl == ATA_CBL_SATA)) { + if (!(ap->flags & ATA_FLAG_ACPI_SATA)) { /* get child objects of dev_handle == channel objects, * + _their_ children == drive objects */ /* channel is ap->port_no */ @@ -528,7 +528,7 @@ static int do_drive_set_taskfiles(struct ata_device *dev, ata_dev_printk(dev, KERN_DEBUG, "%s: ENTER: port#: %d\n", __FUNCTION__, ap->port_no); - if (libata_noacpi || !(ap->cbl == ATA_CBL_SATA)) + if (libata_noacpi || !(ap->flags & ATA_FLAG_ACPI_SATA)) return 0; if (!ata_dev_enabled(dev) || (ap->flags & ATA_FLAG_DISABLED)) @@ -578,7 +578,7 @@ int ata_acpi_exec_tfs(struct ata_port *ap) * we should not run GTF on PATA devices since some * PATA require execution of GTM/STM before GTF. */ - if (!(ap->cbl == ATA_CBL_SATA)) + if (!(ap->flags & ATA_FLAG_ACPI_SATA)) return 0; for (ix = 0; ix < ATA_MAX_DEVICES; ix++) { @@ -641,7 +641,7 @@ int ata_acpi_push_id(struct ata_device *dev) __FUNCTION__, dev->devno, ap->port_no); /* Don't continue if not a SATA device. */ - if (!(ap->cbl == ATA_CBL_SATA)) { + if (!(ap->flags & ATA_FLAG_ACPI_SATA)) { if (ata_msg_probe(ap)) ata_dev_printk(dev, KERN_DEBUG, "%s: Not a SATA device\n", __FUNCTION__); diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index 4166407eb47..d5939e659cb 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -1919,7 +1919,6 @@ int ata_dev_configure(struct ata_device *dev) snprintf(revbuf, 7, "ATA-%d", ata_id_major_version(id)); dev->n_sectors = ata_id_n_sectors(id); - dev->n_sectors_boot = dev->n_sectors; /* SCSI only uses 4-char revisions, dump full 8 chars from ATA */ ata_id_c_string(dev->id, fwrevbuf, ATA_ID_FW_REV, @@ -3632,7 +3631,6 @@ static int ata_dev_same_device(struct ata_device *dev, unsigned int new_class, const u16 *old_id = dev->id; unsigned char model[2][ATA_ID_PROD_LEN + 1]; unsigned char serial[2][ATA_ID_SERNO_LEN + 1]; - u64 new_n_sectors; if (dev->class != new_class) { ata_dev_printk(dev, KERN_INFO, "class mismatch %d != %d\n", @@ -3644,7 +3642,6 @@ static int ata_dev_same_device(struct ata_device *dev, unsigned int new_class, ata_id_c_string(new_id, model[1], ATA_ID_PROD, sizeof(model[1])); ata_id_c_string(old_id, serial[0], ATA_ID_SERNO, sizeof(serial[0])); ata_id_c_string(new_id, serial[1], ATA_ID_SERNO, sizeof(serial[1])); - new_n_sectors = ata_id_n_sectors(new_id); if (strcmp(model[0], model[1])) { ata_dev_printk(dev, KERN_INFO, "model number mismatch " @@ -3658,25 +3655,12 @@ static int ata_dev_same_device(struct ata_device *dev, unsigned int new_class, return 0; } - if (dev->class == ATA_DEV_ATA && dev->n_sectors != new_n_sectors) { - ata_dev_printk(dev, KERN_INFO, "n_sectors mismatch " - "%llu != %llu\n", - (unsigned long long)dev->n_sectors, - (unsigned long long)new_n_sectors); - /* Are we the boot time size - if so we appear to be the - same disk at this point and our HPA got reapplied */ - if (ata_ignore_hpa && dev->n_sectors_boot == new_n_sectors - && ata_id_hpa_enabled(new_id)) - return 1; - return 0; - } - return 1; } /** - * ata_dev_revalidate - Revalidate ATA device - * @dev: device to revalidate + * ata_dev_reread_id - Re-read IDENTIFY data + * @adev: target ATA device * @readid_flags: read ID flags * * Re-read IDENTIFY page and make sure @dev is still attached to @@ -3688,34 +3672,68 @@ static int ata_dev_same_device(struct ata_device *dev, unsigned int new_class, * RETURNS: * 0 on success, negative errno otherwise */ -int ata_dev_revalidate(struct ata_device *dev, unsigned int readid_flags) +int ata_dev_reread_id(struct ata_device *dev, unsigned int readid_flags) { unsigned int class = dev->class; u16 *id = (void *)dev->ap->sector_buf; int rc; - if (!ata_dev_enabled(dev)) { - rc = -ENODEV; - goto fail; - } - /* read ID data */ rc = ata_dev_read_id(dev, &class, readid_flags, id); if (rc) - goto fail; + return rc; /* is the device still there? */ - if (!ata_dev_same_device(dev, class, id)) { - rc = -ENODEV; - goto fail; - } + if (!ata_dev_same_device(dev, class, id)) + return -ENODEV; memcpy(dev->id, id, sizeof(id[0]) * ATA_ID_WORDS); + return 0; +} + +/** + * ata_dev_revalidate - Revalidate ATA device + * @dev: device to revalidate + * @readid_flags: read ID flags + * + * Re-read IDENTIFY page, make sure @dev is still attached to the + * port and reconfigure it according to the new IDENTIFY page. + * + * LOCKING: + * Kernel thread context (may sleep) + * + * RETURNS: + * 0 on success, negative errno otherwise + */ +int ata_dev_revalidate(struct ata_device *dev, unsigned int readid_flags) +{ + u64 n_sectors = dev->n_sectors; + int rc; + + if (!ata_dev_enabled(dev)) + return -ENODEV; + + /* re-read ID */ + rc = ata_dev_reread_id(dev, readid_flags); + if (rc) + goto fail; /* configure device according to the new ID */ rc = ata_dev_configure(dev); - if (rc == 0) - return 0; + if (rc) + goto fail; + + /* verify n_sectors hasn't changed */ + if (dev->class == ATA_DEV_ATA && dev->n_sectors != n_sectors) { + ata_dev_printk(dev, KERN_INFO, "n_sectors mismatch " + "%llu != %llu\n", + (unsigned long long)n_sectors, + (unsigned long long)dev->n_sectors); + rc = -ENODEV; + goto fail; + } + + return 0; fail: ata_dev_printk(dev, KERN_ERR, "revalidation failed (errno=%d)\n", rc); diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c index dd81fa78cdc..b6a1de8fad5 100644 --- a/drivers/ata/libata-scsi.c +++ b/drivers/ata/libata-scsi.c @@ -893,6 +893,23 @@ int ata_scsi_change_queue_depth(struct scsi_device *sdev, int queue_depth) return queue_depth; } +/* XXX: for ata_spindown_compat */ +static void ata_delayed_done_timerfn(unsigned long arg) +{ + struct scsi_cmnd *scmd = (void *)arg; + + scmd->scsi_done(scmd); +} + +/* XXX: for ata_spindown_compat */ +static void ata_delayed_done(struct scsi_cmnd *scmd) +{ + static struct timer_list timer; + + setup_timer(&timer, ata_delayed_done_timerfn, (unsigned long)scmd); + mod_timer(&timer, jiffies + 5 * HZ); +} + /** * ata_scsi_start_stop_xlat - Translate SCSI START STOP UNIT command * @qc: Storage for translated ATA taskfile @@ -950,21 +967,24 @@ static unsigned int ata_scsi_start_stop_xlat(struct ata_queued_cmd *qc) * for more info. */ if (ata_spindown_compat && + (qc->dev->flags & ATA_DFLAG_SPUNDOWN) && (system_state == SYSTEM_HALT || system_state == SYSTEM_POWER_OFF)) { - static int warned = 0; + static unsigned long warned = 0; - if (!warned) { - spin_unlock_irq(qc->ap->lock); + if (!test_and_set_bit(0, &warned)) { ata_dev_printk(qc->dev, KERN_WARNING, "DISK MIGHT NOT BE SPUN DOWN PROPERLY. " "UPDATE SHUTDOWN UTILITY\n"); ata_dev_printk(qc->dev, KERN_WARNING, "For more info, visit " "http://linux-ata.org/shutdown.html\n"); - warned = 1; - ssleep(5); - spin_lock_irq(qc->ap->lock); + + /* ->scsi_done is not used, use it for + * delayed completion. + */ + scmd->scsi_done = qc->scsidone; + qc->scsidone = ata_delayed_done; } scmd->result = SAM_STAT_GOOD; return 1; @@ -1375,6 +1395,14 @@ static void ata_scsi_qc_complete(struct ata_queued_cmd *qc) } } + /* XXX: track spindown state for spindown_compat */ + if (unlikely(qc->tf.command == ATA_CMD_STANDBY || + qc->tf.command == ATA_CMD_STANDBYNOW1)) + qc->dev->flags |= ATA_DFLAG_SPUNDOWN; + else if (likely(system_state != SYSTEM_HALT && + system_state != SYSTEM_POWER_OFF)) + qc->dev->flags &= ~ATA_DFLAG_SPUNDOWN; + if (need_sense && !ap->ops->error_handler) ata_dump_status(ap->print_id, &qc->result_tf); @@ -1488,14 +1516,14 @@ static int ata_scsi_translate(struct ata_device *dev, struct scsi_cmnd *cmd, early_finish: ata_qc_free(qc); - done(cmd); + qc->scsidone(cmd); DPRINTK("EXIT - early finish (good or error)\n"); return 0; err_did: ata_qc_free(qc); cmd->result = (DID_ERROR << 16); - done(cmd); + qc->scsidone(cmd); err_mem: DPRINTK("EXIT - internal\n"); return 0; diff --git a/drivers/ata/libata.h b/drivers/ata/libata.h index 8b71b73a199..13cb0c9af68 100644 --- a/drivers/ata/libata.h +++ b/drivers/ata/libata.h @@ -76,7 +76,8 @@ extern unsigned ata_exec_internal_sg(struct ata_device *dev, extern unsigned int ata_do_simple_cmd(struct ata_device *dev, u8 cmd); extern int ata_dev_read_id(struct ata_device *dev, unsigned int *p_class, unsigned int flags, u16 *id); -extern int ata_dev_revalidate(struct ata_device *dev, unsigned int flags); +extern int ata_dev_reread_id(struct ata_device *dev, unsigned int readid_flags); +extern int ata_dev_revalidate(struct ata_device *dev, unsigned int readid_flags); extern int ata_dev_configure(struct ata_device *dev); extern int sata_down_spd_limit(struct ata_port *ap); extern int sata_set_spd_needed(struct ata_port *ap); diff --git a/drivers/ata/pata_scc.c b/drivers/ata/pata_scc.c index cca3aa225ef..844e53b280c 100644 --- a/drivers/ata/pata_scc.c +++ b/drivers/ata/pata_scc.c @@ -864,10 +864,10 @@ static void scc_bmdma_freeze (struct ata_port *ap) * @ap: ATA port to be reset */ -static int scc_pata_prereset (struct ata_port *ap) +static int scc_pata_prereset (struct ata_port *ap, unsigned long deadline) { ap->cbl = ATA_CBL_PATA80; - return ata_std_prereset(ap); + return ata_std_prereset(ap, deadline); } /** diff --git a/drivers/ata/sata_sil24.c b/drivers/ata/sata_sil24.c index a69d78cd8e9..0cb6618935b 100644 --- a/drivers/ata/sata_sil24.c +++ b/drivers/ata/sata_sil24.c @@ -237,7 +237,8 @@ enum { /* host flags */ SIL24_COMMON_FLAGS = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY | ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA | - ATA_FLAG_NCQ | ATA_FLAG_SKIP_D2H_BSY, + ATA_FLAG_NCQ | ATA_FLAG_SKIP_D2H_BSY | + ATA_FLAG_ACPI_SATA, SIL24_FLAG_PCIX_IRQ_WOC = (1 << 24), /* IRQ loss errata on PCI-X */ IRQ_STAT_4PORTS = 0xf, diff --git a/drivers/parport/parport_pc.c b/drivers/parport/parport_pc.c index 02c0d52c9f7..7bfbad57879 100644 --- a/drivers/parport/parport_pc.c +++ b/drivers/parport/parport_pc.c @@ -51,6 +51,7 @@ #include <linux/ioport.h> #include <linux/kernel.h> #include <linux/slab.h> +#include <linux/dma-mapping.h> #include <linux/pci.h> #include <linux/pnp.h> #include <linux/platform_device.h> diff --git a/drivers/serial/sunhv.c b/drivers/serial/sunhv.c index c3a6bd2e795..96557e6dba6 100644 --- a/drivers/serial/sunhv.c +++ b/drivers/serial/sunhv.c @@ -1,6 +1,6 @@ /* sunhv.c: Serial driver for SUN4V hypervisor console. * - * Copyright (C) 2006 David S. Miller (davem@davemloft.net) + * Copyright (C) 2006, 2007 David S. Miller (davem@davemloft.net) */ #include <linux/module.h> @@ -35,57 +35,51 @@ #define CON_BREAK ((long)-1) #define CON_HUP ((long)-2) -static inline long hypervisor_con_getchar(long *status) -{ - register unsigned long func asm("%o5"); - register unsigned long arg0 asm("%o0"); - register unsigned long arg1 asm("%o1"); - - func = HV_FAST_CONS_GETCHAR; - arg0 = 0; - arg1 = 0; - __asm__ __volatile__("ta %6" - : "=&r" (func), "=&r" (arg0), "=&r" (arg1) - : "0" (func), "1" (arg0), "2" (arg1), - "i" (HV_FAST_TRAP)); +#define IGNORE_BREAK 0x1 +#define IGNORE_ALL 0x2 - *status = arg0; +static char *con_write_page; +static char *con_read_page; - return (long) arg1; -} +static int hung_up = 0; -static inline long hypervisor_con_putchar(long ch) +static void transmit_chars_putchar(struct uart_port *port, struct circ_buf *xmit) { - register unsigned long func asm("%o5"); - register unsigned long arg0 asm("%o0"); + while (!uart_circ_empty(xmit)) { + long status = sun4v_con_putchar(xmit->buf[xmit->tail]); - func = HV_FAST_CONS_PUTCHAR; - arg0 = ch; - __asm__ __volatile__("ta %4" - : "=&r" (func), "=&r" (arg0) - : "0" (func), "1" (arg0), "i" (HV_FAST_TRAP)); + if (status != HV_EOK) + break; - return (long) arg0; + xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1); + port->icount.tx++; + } } -#define IGNORE_BREAK 0x1 -#define IGNORE_ALL 0x2 +static void transmit_chars_write(struct uart_port *port, struct circ_buf *xmit) +{ + while (!uart_circ_empty(xmit)) { + unsigned long ra = __pa(xmit->buf + xmit->tail); + unsigned long len, status, sent; -static int hung_up = 0; + len = CIRC_CNT_TO_END(xmit->head, xmit->tail, + UART_XMIT_SIZE); + status = sun4v_con_write(ra, len, &sent); + if (status != HV_EOK) + break; + xmit->tail = (xmit->tail + sent) & (UART_XMIT_SIZE - 1); + port->icount.tx += sent; + } +} -static struct tty_struct *receive_chars(struct uart_port *port) +static int receive_chars_getchar(struct uart_port *port, struct tty_struct *tty) { - struct tty_struct *tty = NULL; int saw_console_brk = 0; int limit = 10000; - if (port->info != NULL) /* Unopened serial console */ - tty = port->info->tty; - while (limit-- > 0) { long status; - long c = hypervisor_con_getchar(&status); - unsigned char flag; + long c = sun4v_con_getchar(&status); if (status == HV_EWOULDBLOCK) break; @@ -110,27 +104,90 @@ static struct tty_struct *receive_chars(struct uart_port *port) continue; } - flag = TTY_NORMAL; port->icount.rx++; - if (c == CON_BREAK) { - port->icount.brk++; - if (uart_handle_break(port)) - continue; - flag = TTY_BREAK; - } if (uart_handle_sysrq_char(port, c)) continue; - if ((port->ignore_status_mask & IGNORE_ALL) || - ((port->ignore_status_mask & IGNORE_BREAK) && - (c == CON_BREAK))) + tty_insert_flip_char(tty, c, TTY_NORMAL); + } + + return saw_console_brk; +} + +static int receive_chars_read(struct uart_port *port, struct tty_struct *tty) +{ + int saw_console_brk = 0; + int limit = 10000; + + while (limit-- > 0) { + unsigned long ra = __pa(con_read_page); + unsigned long bytes_read, i; + long stat = sun4v_con_read(ra, PAGE_SIZE, &bytes_read); + + if (stat != HV_EOK) { + bytes_read = 0; + + if (stat == CON_BREAK) { + if (uart_handle_break(port)) + continue; + saw_console_brk = 1; + *con_read_page = 0; + bytes_read = 1; + } else if (stat == CON_HUP) { + hung_up = 1; + uart_handle_dcd_change(port, 0); + continue; + } else { + /* HV_EWOULDBLOCK, etc. */ + break; + } + } + + if (hung_up) { + hung_up = 0; + uart_handle_dcd_change(port, 1); + } + + for (i = 0; i < bytes_read; i++) + uart_handle_sysrq_char(port, con_read_page[i]); + + if (tty == NULL) continue; - tty_insert_flip_char(tty, c, flag); + port->icount.rx += bytes_read; + + tty_insert_flip_string(tty, con_read_page, bytes_read); } - if (saw_console_brk) + return saw_console_brk; +} + +struct sunhv_ops { + void (*transmit_chars)(struct uart_port *port, struct circ_buf *xmit); + int (*receive_chars)(struct uart_port *port, struct tty_struct *tty); +}; + +static struct sunhv_ops bychar_ops = { + .transmit_chars = transmit_chars_putchar, + .receive_chars = receive_chars_getchar, +}; + +static struct sunhv_ops bywrite_ops = { + .transmit_chars = transmit_chars_write, + .receive_chars = receive_chars_read, +}; + +static struct sunhv_ops *sunhv_ops = &bychar_ops; + +static struct tty_struct *receive_chars(struct uart_port *port) +{ + struct tty_struct *tty = NULL; + + if (port->info != NULL) /* Unopened serial console */ + tty = port->info->tty; + + if (sunhv_ops->receive_chars(port, tty)) sun_do_break(); return tty; @@ -147,15 +204,7 @@ static void transmit_chars(struct uart_port *port) if (uart_circ_empty(xmit) || uart_tx_stopped(port)) return; - while (!uart_circ_empty(xmit)) { - long status = hypervisor_con_putchar(xmit->buf[xmit->tail]); - - if (status != HV_EOK) - break; - - xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1); - port->icount.tx++; - } + sunhv_ops->transmit_chars(port, xmit); if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS) uart_write_wakeup(port); @@ -212,7 +261,7 @@ static void sunhv_start_tx(struct uart_port *port) struct circ_buf *xmit = &port->info->xmit; while (!uart_circ_empty(xmit)) { - long status = hypervisor_con_putchar(xmit->buf[xmit->tail]); + long status = sun4v_con_putchar(xmit->buf[xmit->tail]); if (status != HV_EOK) break; @@ -231,9 +280,10 @@ static void sunhv_send_xchar(struct uart_port *port, char ch) spin_lock_irqsave(&port->lock, flags); while (limit-- > 0) { - long status = hypervisor_con_putchar(ch); + long status = sun4v_con_putchar(ch); if (status == HV_EOK) break; + udelay(1); } spin_unlock_irqrestore(&port->lock, flags); @@ -254,15 +304,15 @@ static void sunhv_break_ctl(struct uart_port *port, int break_state) { if (break_state) { unsigned long flags; - int limit = 1000000; + int limit = 10000; spin_lock_irqsave(&port->lock, flags); while (limit-- > 0) { - long status = hypervisor_con_putchar(CON_BREAK); + long status = sun4v_con_putchar(CON_BREAK); if (status == HV_EOK) break; - udelay(2); + udelay(1); } spin_unlock_irqrestore(&port->lock, flags); @@ -359,38 +409,99 @@ static struct uart_driver sunhv_reg = { static struct uart_port *sunhv_port; -static inline void sunhv_console_putchar(struct uart_port *port, char c) +/* Copy 's' into the con_write_page, decoding "\n" into + * "\r\n" along the way. We have to return two lengths + * because the caller needs to know how much to advance + * 's' and also how many bytes to output via con_write_page. + */ +static int fill_con_write_page(const char *s, unsigned int n, + unsigned long *page_bytes) +{ + const char *orig_s = s; + char *p = con_write_page; + int left = PAGE_SIZE; + + while (n--) { + if (*s == '\n') { + if (left < 2) + break; + *p++ = '\r'; + left--; + } else if (left < 1) + break; + *p++ = *s++; + left--; + } + *page_bytes = p - con_write_page; + return s - orig_s; +} + +static void sunhv_console_write_paged(struct console *con, const char *s, unsigned n) { + struct uart_port *port = sunhv_port; unsigned long flags; - int limit = 1000000; spin_lock_irqsave(&port->lock, flags); + while (n > 0) { + unsigned long ra = __pa(con_write_page); + unsigned long page_bytes; + unsigned int cpy = fill_con_write_page(s, n, + &page_bytes); + + n -= cpy; + s += cpy; + while (page_bytes > 0) { + unsigned long written; + int limit = 1000000; + + while (limit--) { + unsigned long stat; + + stat = sun4v_con_write(ra, page_bytes, + &written); + if (stat == HV_EOK) + break; + udelay(1); + } + if (limit <= 0) + break; + page_bytes -= written; + ra += written; + } + } + spin_unlock_irqrestore(&port->lock, flags); +} + +static inline void sunhv_console_putchar(struct uart_port *port, char c) +{ + int limit = 1000000; while (limit-- > 0) { - long status = hypervisor_con_putchar(c); + long status = sun4v_con_putchar(c); if (status == HV_EOK) break; - udelay(2); + udelay(1); } - - spin_unlock_irqrestore(&port->lock, flags); } -static void sunhv_console_write(struct console *con, const char *s, unsigned n) +static void sunhv_console_write_bychar(struct console *con, const char *s, unsigned n) { struct uart_port *port = sunhv_port; + unsigned long flags; int i; + spin_lock_irqsave(&port->lock, flags); for (i = 0; i < n; i++) { if (*s == '\n') sunhv_console_putchar(port, '\r'); sunhv_console_putchar(port, *s++); } + spin_unlock_irqrestore(&port->lock, flags); } static struct console sunhv_console = { .name = "ttyHV", - .write = sunhv_console_write, + .write = sunhv_console_write_bychar, .device = uart_console_device, .flags = CON_PRINTBUFFER, .index = -1, @@ -410,6 +521,7 @@ static inline struct console *SUNHV_CONSOLE(void) static int __devinit hv_probe(struct of_device *op, const struct of_device_id *match) { struct uart_port *port; + unsigned long minor; int err; if (op->irqs[0] == 0xffffffff) @@ -419,6 +531,22 @@ static int __devinit hv_probe(struct of_device *op, const struct of_device_id *m if (unlikely(!port)) return -ENOMEM; + minor = 1; + if (sun4v_hvapi_register(HV_GRP_CORE, 1, &minor) == 0 && + minor >= 1) { + err = -ENOMEM; + con_write_page = kzalloc(PAGE_SIZE, GFP_KERNEL); + if (!con_write_page) + goto out_free_port; + + con_read_page = kzalloc(PAGE_SIZE, GFP_KERNEL); + if (!con_read_page) + goto out_free_con_write_page; + + sunhv_console.write = sunhv_console_write_paged; + sunhv_ops = &bywrite_ops; + } + sunhv_port = port; port->line = 0; @@ -437,7 +565,7 @@ static int __devinit hv_probe(struct of_device *op, const struct of_device_id *m err = uart_register_driver(&sunhv_reg); if (err) - goto out_free_port; + goto out_free_con_read_page; sunhv_reg.tty_driver->name_base = sunhv_reg.minor - 64; sunserial_current_minor += 1; @@ -463,6 +591,12 @@ out_unregister_driver: sunserial_current_minor -= 1; uart_unregister_driver(&sunhv_reg); +out_free_con_read_page: + kfree(con_read_page); + +out_free_con_write_page: + kfree(con_write_page); + out_free_port: kfree(port); sunhv_port = NULL; diff --git a/drivers/spi/spidev.c b/drivers/spi/spidev.c index c0a6dce800a..225d6b2f82d 100644 --- a/drivers/spi/spidev.c +++ b/drivers/spi/spidev.c @@ -484,7 +484,7 @@ static int spidev_probe(struct spi_device *spi) * Reusing minors is fine so long as udev or mdev is working. */ mutex_lock(&device_list_lock); - minor = find_first_zero_bit(minors, ARRAY_SIZE(minors)); + minor = find_first_zero_bit(minors, N_SPI_MINORS); if (minor < N_SPI_MINORS) { spidev->dev.parent = &spi->dev; spidev->dev.class = &spidev_class; |