diff options
Diffstat (limited to 'drivers/ide/ide-pm.c')
| -rw-r--r-- | drivers/ide/ide-pm.c | 56 |
1 files changed, 43 insertions, 13 deletions
diff --git a/drivers/ide/ide-pm.c b/drivers/ide/ide-pm.c index 8d1e32d7cd97..081e43458d50 100644 --- a/drivers/ide/ide-pm.c +++ b/drivers/ide/ide-pm.c @@ -8,7 +8,7 @@ int generic_ide_suspend(struct device *dev, pm_message_t mesg) ide_drive_t *pair = ide_get_pair_dev(drive); ide_hwif_t *hwif = drive->hwif; struct request *rq; - struct request_pm_state rqpm; + struct ide_pm_state rqpm; int ret; if (ide_port_acpi(hwif)) { @@ -19,7 +19,7 @@ int generic_ide_suspend(struct device *dev, pm_message_t mesg) memset(&rqpm, 0, sizeof(rqpm)); rq = blk_get_request(drive->queue, READ, __GFP_WAIT); - rq->cmd_type = REQ_TYPE_PM_SUSPEND; + rq->cmd_type = REQ_TYPE_ATA_PM_SUSPEND; rq->special = &rqpm; rqpm.pm_step = IDE_PM_START_SUSPEND; if (mesg.event == PM_EVENT_PRETHAW) @@ -38,13 +38,43 @@ int generic_ide_suspend(struct device *dev, pm_message_t mesg) return ret; } +static void ide_end_sync_rq(struct request *rq, int error) +{ + complete(rq->end_io_data); +} + +static int ide_pm_execute_rq(struct request *rq) +{ + struct request_queue *q = rq->q; + DECLARE_COMPLETION_ONSTACK(wait); + + rq->end_io_data = &wait; + rq->end_io = ide_end_sync_rq; + + spin_lock_irq(q->queue_lock); + if (unlikely(blk_queue_dying(q))) { + rq->cmd_flags |= REQ_QUIET; + rq->errors = -ENXIO; + __blk_end_request_all(rq, rq->errors); + spin_unlock_irq(q->queue_lock); + return -ENXIO; + } + __elv_add_request(q, rq, ELEVATOR_INSERT_FRONT); + __blk_run_queue_uncond(q); + spin_unlock_irq(q->queue_lock); + + wait_for_completion_io(&wait); + + return rq->errors ? -EIO : 0; +} + int generic_ide_resume(struct device *dev) { ide_drive_t *drive = to_ide_device(dev); ide_drive_t *pair = ide_get_pair_dev(drive); ide_hwif_t *hwif = drive->hwif; struct request *rq; - struct request_pm_state rqpm; + struct ide_pm_state rqpm; int err; if (ide_port_acpi(hwif)) { @@ -59,13 +89,13 @@ int generic_ide_resume(struct device *dev) memset(&rqpm, 0, sizeof(rqpm)); rq = blk_get_request(drive->queue, READ, __GFP_WAIT); - rq->cmd_type = REQ_TYPE_PM_RESUME; + rq->cmd_type = REQ_TYPE_ATA_PM_RESUME; rq->cmd_flags |= REQ_PREEMPT; rq->special = &rqpm; rqpm.pm_step = IDE_PM_START_RESUME; rqpm.pm_state = PM_EVENT_ON; - err = blk_execute_rq(drive->queue, NULL, rq, 1); + err = ide_pm_execute_rq(rq); blk_put_request(rq); if (err == 0 && dev->driver) { @@ -80,7 +110,7 @@ int generic_ide_resume(struct device *dev) void ide_complete_power_step(ide_drive_t *drive, struct request *rq) { - struct request_pm_state *pm = rq->special; + struct ide_pm_state *pm = rq->special; #ifdef DEBUG_PM printk(KERN_INFO "%s: complete_power_step(step: %d)\n", @@ -110,7 +140,7 @@ void ide_complete_power_step(ide_drive_t *drive, struct request *rq) ide_startstop_t ide_start_power_step(ide_drive_t *drive, struct request *rq) { - struct request_pm_state *pm = rq->special; + struct ide_pm_state *pm = rq->special; struct ide_cmd cmd = { }; switch (pm->pm_step) { @@ -182,7 +212,7 @@ out_do_tf: void ide_complete_pm_rq(ide_drive_t *drive, struct request *rq) { struct request_queue *q = drive->queue; - struct request_pm_state *pm = rq->special; + struct ide_pm_state *pm = rq->special; unsigned long flags; ide_complete_power_step(drive, rq); @@ -191,10 +221,10 @@ void ide_complete_pm_rq(ide_drive_t *drive, struct request *rq) #ifdef DEBUG_PM printk("%s: completing PM request, %s\n", drive->name, - (rq->cmd_type == REQ_TYPE_PM_SUSPEND) ? "suspend" : "resume"); + (rq->cmd_type == REQ_TYPE_ATA_PM_SUSPEND) ? "suspend" : "resume"); #endif spin_lock_irqsave(q->queue_lock, flags); - if (rq->cmd_type == REQ_TYPE_PM_SUSPEND) + if (rq->cmd_type == REQ_TYPE_ATA_PM_SUSPEND) blk_stop_queue(q); else drive->dev_flags &= ~IDE_DFLAG_BLOCKED; @@ -208,13 +238,13 @@ void ide_complete_pm_rq(ide_drive_t *drive, struct request *rq) void ide_check_pm_state(ide_drive_t *drive, struct request *rq) { - struct request_pm_state *pm = rq->special; + struct ide_pm_state *pm = rq->special; - if (rq->cmd_type == REQ_TYPE_PM_SUSPEND && + if (rq->cmd_type == REQ_TYPE_ATA_PM_SUSPEND && pm->pm_step == IDE_PM_START_SUSPEND) /* Mark drive blocked when starting the suspend sequence. */ drive->dev_flags |= IDE_DFLAG_BLOCKED; - else if (rq->cmd_type == REQ_TYPE_PM_RESUME && + else if (rq->cmd_type == REQ_TYPE_ATA_PM_RESUME && pm->pm_step == IDE_PM_START_RESUME) { /* * The first thing we do on wakeup is to wait for BSY bit to |