scsi: ufs: Allow an error return value from ->device_reset()

It is simpler for drivers to provide a ->device_reset() callback
irrespective of whether the GPIO, or firmware interface necessary to do the
reset, is discovered during probe.

Change ->device_reset() to return an error code.  Drivers that provide the
callback, but do not do the reset operation should return -EOPNOTSUPP.

Link: https://lore.kernel.org/r/[email protected]
Reviewed-by: Asutosh Das <[email protected]>
Reviewed-by: Stanley Chu <[email protected]>
Reviewed-by: Bean huo <[email protected]>
Reviewed-by: Can Guo <[email protected]>
Signed-off-by: Adrian Hunter <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>

0 files changed, 0 insertions, 0 deletions