Single small fix for the UFS driver to fix a power management failure.
The patch is available here:
git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi.git scsi-fixes
The short changelog is:
Keoseong Park (1):
scsi: ufs: core: Fix I/O hang that occurs when BKOPS fails in W-LUN suspend
And the diffstat:
drivers/ufs/core/ufshcd.c | 10 +++++++++-
1 file changed, 9 insertions(+), 1 deletion(-)
With full diff below.
James
---
diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c
index 17d7bb875fee..45fd374fe56c 100644
--- a/drivers/ufs/core/ufshcd.c
+++ b/drivers/ufs/core/ufshcd.c
@@ -9459,8 +9459,16 @@ static int __ufshcd_wl_suspend(struct ufs_hba *hba, enum ufs_pm_op pm_op)
* that performance might be impacted.
*/
ret = ufshcd_urgent_bkops(hba);
- if (ret)
+ if (ret) {
+ /*
+ * If return err in suspend flow, IO will hang.
+ * Trigger error handler and break suspend for
+ * error recovery.
+ */
+ ufshcd_force_error_recovery(hba);
+ ret = -EBUSY;
goto enable_scaling;
+ }
} else {
/* make sure that auto bkops is disabled */
ufshcd_disable_auto_bkops(hba);