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authorCan Guo <cang@codeaurora.org>2021-04-26 05:48:39 +0200
committerMartin K. Petersen <martin.petersen@oracle.com>2021-04-29 05:15:17 +0200
commit637822e63b79ee8a729f7ba2645a26cf5a524ee4 (patch)
tree12e5591cc599fd336cab25651e056f05f2ed4c7c /drivers/scsi
parentscsi: ufs: core: Do not put UFS power into LPM if link is broken (diff)
downloadlinux-637822e63b79ee8a729f7ba2645a26cf5a524ee4.tar.xz
linux-637822e63b79ee8a729f7ba2645a26cf5a524ee4.zip
scsi: ufs: core: Cancel rpm_dev_flush_recheck_work during system suspend
During ufs system suspend, leaving rpm_dev_flush_recheck_work running or pending is risky because concurrency may happen between system suspend/resume and runtime resume routine. Fix this by cancelling rpm_dev_flush_recheck_work synchronously during system suspend. Link: https://lore.kernel.org/r/1619408921-30426-3-git-send-email-cang@codeaurora.org Fixes: 51dd905bd2f6 ("scsi: ufs: Fix WriteBooster flush during runtime suspend") Reviewed-by: Daejun Park <daejun7.park@samsung.com> Signed-off-by: Can Guo <cang@codeaurora.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi')
-rw-r--r--drivers/scsi/ufs/ufshcd.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index 19d3049a867c..f65f2dc92029 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -8975,6 +8975,8 @@ int ufshcd_system_suspend(struct ufs_hba *hba)
if (!hba->is_powered)
return 0;
+ cancel_delayed_work_sync(&hba->rpm_dev_flush_recheck_work);
+
if ((ufs_get_pm_lvl_to_dev_pwr_mode(hba->spm_lvl) ==
hba->curr_dev_pwr_mode) &&
(ufs_get_pm_lvl_to_link_pwr_state(hba->spm_lvl) ==