scsi: ufs: commit descriptors before setting the doorbell

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Add a write memory barrier to make sure descriptors prepared are
actually written to memory before ringing the doorbell. We have also
added the write memory barrier after ringing the doorbell register so
that controller sees the new request immediately.

Signed-off-by: Gilad Broner <gbroner@codeaurora.org>
Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

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Gilad Broner 2016-10-17 17:09:36 -07:00 • committed by Martin K. Petersen

parent e3ce73d69a

commit ad1a1b9cd6

1 changed files with 8 additions and 0 deletions

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drivers/scsi/ufs/ufshcd.c

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