scsi: ufs: Allow async suspend/resume callbacks

Allow UFS suspend/resume callbacks to run in parallel with other
suspend/resume callbacks. This can recoup dozens of milliseconds on the
resume path if UFS hardware needs to be powered back on.

Suspending and resuming asynchronously is safe to do so long as the driver
callbacks only depend on resources made available by either a) parent
devices or b) devices explicitly marked as suppliers with device_link_add.

Link: https://lore.kernel.org/r/[email protected]
Cc: Bjorn Helgaas <[email protected]>
Cc: Jaegeuk Kim <[email protected]>
Cc: Bart Van Assche <[email protected]>
Cc: Adrian Hunter <[email protected]>
Cc: Stanley Chu <[email protected]>
Cc: Can Guo <[email protected]>
Cc: Asutosh Das <[email protected]>
Cc: Avri Altman <[email protected]>
Cc: Martin K. Petersen <[email protected]>
Reviewed-by: Bart Van Assche <[email protected]>
Signed-off-by: Vincent Palomares <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>

0 files changed, 0 insertions, 0 deletions