scsi: ufs: core: Retry START_STOP on UNIT_ATTENTION

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Commit 57d104c153 ("ufs: add UFS power management support") made the UFS
driver submit a REQUEST SENSE command before submitting a power management
command to a WLUN to clear the POWER ON unit attention. Instead of
submitting a REQUEST SENSE command before submitting a power management
command, retry the power management command until it succeeds.

This is the preparation to get rid of all UNIT ATTENTION code which should
be handled by users.

Link: https://lore.kernel.org/r/20211001182015.1347587-2-jaegeuk@kernel.org
Cc: Adrian Hunter <adrian.hunter@intel.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

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Jaegeuk Kim 2021-10-01 11:20:14 -07:00 • committed by Martin K. Petersen

parent f44abcfc3f

commit af21c3fd5b

1 changed files with 9 additions and 3 deletions

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drivers/scsi/ufs/ufshcd.c

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