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Subject[PATCH v2 2/3] scsi: ufs: 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 btw system suspend/resume
and runtime resume routine. Fix it by cancelling rpm_dev_flush_recheck_work
synchronously during system suspend.

Fixes: 51dd905bd2f61 ("scsi: ufs: Fix WriteBooster flush during runtime suspend")
Signed-off-by: Can Guo <>
drivers/scsi/ufs/ufshcd.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index 28501bb..a2f9c8e 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -9044,6 +9044,8 @@ 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) ==
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