During system resume/suspend, hba could be NULL. In this case, do not touch
eh_sem.
Fixes: 88a92d6ae4fe ("scsi: ufs: Serialize eh_work with system PM events and async scan")
Signed-off-by: Can Guo <cang@xxxxxxxxxxxxxx>
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index e221add..34e2541 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -8896,8 +8896,11 @@ int ufshcd_system_suspend(struct ufs_hba *hba)
int ret = 0;
ktime_t start = ktime_get();
+ if (!hba)
+ return 0;
+
down(&hba->eh_sem);
- if (!hba || !hba->is_powered)
+ if (!hba->is_powered)
return 0;
if ((ufs_get_pm_lvl_to_dev_pwr_mode(hba->spm_lvl) ==
@@ -8945,10 +8948,8 @@ int ufshcd_system_resume(struct ufs_hba *hba)
int ret = 0;
ktime_t start = ktime_get();
- if (!hba) {
- up(&hba->eh_sem);
+ if (!hba)
return -EINVAL;
- }
if (!hba->is_powered || pm_runtime_suspended(hba->dev))
/*
--
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