scsi: ufs: core: Exclude UECxx from SFR dump list
authorKiwoong Kim <kwmad.kim@samsung.com>
Thu, 31 Mar 2022 01:24:05 +0000 (10:24 +0900)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 9 Jun 2022 08:22:51 +0000 (10:22 +0200)
commit663d326bcf3ad410dcbc10231b405ab5c64b4d32
tree6a3e91963a454f5e4e4adaa71dd4e67cb945cf26
parentf265dea6b8b8ac601a9fd7624ec8a622782022a5
scsi: ufs: core: Exclude UECxx from SFR dump list

[ Upstream commit ef60031022eb6d972aac86ca26c98c33e1289436 ]

Some devices may return invalid or zeroed data during an UIC error
condition. In addition, reading these SFRs will clear them. This means the
subsequent error handling will not be able to see them and therefore no
error handling will be scheduled.

Skip reading these SFRs in ufshcd_dump_regs().

Link: https://lore.kernel.org/r/1648689845-33521-1-git-send-email-kwmad.kim@samsung.com
Fixes: d67247566450 ("scsi: ufs: Use explicit access size in ufshcd_dump_regs")
Signed-off-by: Kiwoong Kim <kwmad.kim@samsung.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
drivers/scsi/ufs/ufshcd.c