scsi: ufs: Atomic update for clkgating_enable
authorJaegeuk Kim <jaegeuk@google.com>
Tue, 17 Nov 2020 16:58:34 +0000 (08:58 -0800)
committerMartin K. Petersen <martin.petersen@oracle.com>
Fri, 20 Nov 2020 03:00:51 +0000 (22:00 -0500)
commitb664511297644eac34038df877b3ad7bcaa81913
tree9f01cafd18fe1038e24833f1636423851d7fcbc4
parentfd62de114f8c9df098dcd43b5d83c5714176dd12
scsi: ufs: Atomic update for clkgating_enable

While running a stress test which enables/disables clkgating, we
occasionally hit device timeout. This patch avoids a subtle race condition
to address it.

Link: https://lore.kernel.org/r/20201117165839.1643377-3-jaegeuk@kernel.org
Reviewed-by: Can Guo <cang@codeaurora.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@google.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
drivers/scsi/ufs/ufshcd.c