]> git.ipfire.org Git - thirdparty/kernel/stable.git/commit
scsi: ufs: core: Fix error handler host_sem issue
authorPeter Wang <peter.wang@mediatek.com>
Wed, 8 Oct 2025 06:55:43 +0000 (14:55 +0800)
committerMartin K. Petersen <martin.petersen@oracle.com>
Wed, 22 Oct 2025 00:50:28 +0000 (20:50 -0400)
commite23ef4f22db30a1e49c8b060e4ebc9dc9ca99c49
tree099eeb0a1d42386d6cf49e5c72b840d49eebe3c2
parenta0b7780602b1b196f47e527fec82166a7e67c4d0
scsi: ufs: core: Fix error handler host_sem issue

Fix the issue where host_sem is not released due to a new return path in
commit f966e02ae521 ("scsi: ufs: core: Fix runtime suspend error
deadlock").

Check pm_op_in_progress before acquiring hba->host_sem to prevent
deadlocks and ensure proper resource management during error
handling. Add comment for use ufshcd_rpm_get_noresume() to safely
perform link recovery without interfering with ongoing PM operations.

Fixes: f966e02ae521 ("scsi: ufs: core: Fix runtime suspend error deadlock")
Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Signed-off-by: Peter Wang <peter.wang@mediatek.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Link: https://patch.msgid.link/20251008065651.1589614-2-peter.wang@mediatek.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
drivers/ufs/core/ufshcd.c