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| author | Aaron Lu <aaron.lu@intel.com> | 2012-11-09 15:27:55 +0800 |
|---|---|---|
| committer | James Bottomley <JBottomley@Parallels.com> | 2012-11-30 09:28:34 +0000 |
| commit | 691e3d3175daff73d9b1771bf79ab032fdcec5a5 (patch) | |
| tree | f1b66686e4fe57f2494787de0378ad2ca5be4502 /drivers/scsi/sd.c | |
| parent | 80d2fd48cca2a0de806c3130551744a04ad5b80b (diff) | |
| download | lwn-691e3d3175daff73d9b1771bf79ab032fdcec5a5.tar.gz lwn-691e3d3175daff73d9b1771bf79ab032fdcec5a5.zip | |
[SCSI] sd: update sd to use the new pm callbacks
Update sd driver to use the callbacks defined in dev_pm_ops.
sd_freeze is NULL, the bus level callback has taken care of quiescing
the device so there should be nothing needs to be done here.
Consequently, sd_thaw is not needed here either.
suspend, poweroff and runtime suspend share the same routine sd_suspend,
which will sync flush and then stop the drive, this is the same as before.
resume, restore and runtime resume share the same routine sd_resume,
which will start the drive by putting it into active power state, this
is also the same as before.
Signed-off-by: Aaron Lu <aaron.lu@intel.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Acked-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Diffstat (limited to 'drivers/scsi/sd.c')
| -rw-r--r-- | drivers/scsi/sd.c | 19 |
1 files changed, 13 insertions, 6 deletions
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c index b1195fd537b6..7992635d405f 100644 --- a/drivers/scsi/sd.c +++ b/drivers/scsi/sd.c @@ -105,7 +105,7 @@ static void sd_unlock_native_capacity(struct gendisk *disk); static int sd_probe(struct device *); static int sd_remove(struct device *); static void sd_shutdown(struct device *); -static int sd_suspend(struct device *, pm_message_t state); +static int sd_suspend(struct device *); static int sd_resume(struct device *); static void sd_rescan(struct device *); static int sd_done(struct scsi_cmnd *); @@ -465,15 +465,23 @@ static struct class sd_disk_class = { .dev_attrs = sd_disk_attrs, }; +static const struct dev_pm_ops sd_pm_ops = { + .suspend = sd_suspend, + .resume = sd_resume, + .poweroff = sd_suspend, + .restore = sd_resume, + .runtime_suspend = sd_suspend, + .runtime_resume = sd_resume, +}; + static struct scsi_driver sd_template = { .owner = THIS_MODULE, .gendrv = { .name = "sd", .probe = sd_probe, .remove = sd_remove, - .suspend = sd_suspend, - .resume = sd_resume, .shutdown = sd_shutdown, + .pm = &sd_pm_ops, }, .rescan = sd_rescan, .done = sd_done, @@ -3054,7 +3062,7 @@ exit: scsi_disk_put(sdkp); } -static int sd_suspend(struct device *dev, pm_message_t mesg) +static int sd_suspend(struct device *dev) { struct scsi_disk *sdkp = scsi_disk_get_from_dev(dev); int ret = 0; @@ -3069,8 +3077,7 @@ static int sd_suspend(struct device *dev, pm_message_t mesg) goto done; } - if (((mesg.event & PM_EVENT_SLEEP) || PMSG_IS_AUTO(mesg)) && - sdkp->device->manage_start_stop) { + if (sdkp->device->manage_start_stop) { sd_printk(KERN_NOTICE, sdkp, "Stopping disk\n"); ret = sd_start_stop_device(sdkp, 0); } |