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[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 <firstname.lastname@example.org> Acked-by: Alan Stern <email@example.com> Acked-by: Rafael J. Wysocki <firstname.lastname@example.org> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
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