[PATCH v2] ufs: core: fix another deadlock when rtc update

[peter.wang at mediatek.com]

From: Peter Wang <peter.wang at mediatek.com>

When ufshcd_rtc_work calls ufshcd_rpm_put_sync and the pm's
usage_count is 0, it will enter the runtime suspend callback.
However, the runtime suspend callback will wait to flush
ufshcd_rtc_work, causing a deadlock.
Replacing ufshcd_rpm_put_sync with ufshcd_rpm_put can avoid
the deadlock.

Fixes: 6bf999e0eb41 ("scsi: ufs: core: Add UFS RTC support")
Cc: <stable at vger.kernel.org> #6.11.x
Signed-off-by: Peter Wang <peter.wang at mediatek.com>
Reviewed-by: Bart Van Assche <bvanassche at acm.org>
---
 drivers/ufs/core/ufshcd.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c
index a63dcf48e59d..f5846598d80e 100644
--- a/drivers/ufs/core/ufshcd.c
+++ b/drivers/ufs/core/ufshcd.c
@@ -8219,7 +8219,7 @@ static void ufshcd_update_rtc(struct ufs_hba *hba)
 
 	err = ufshcd_query_attr(hba, UPIU_QUERY_OPCODE_WRITE_ATTR, QUERY_ATTR_IDN_SECONDS_PASSED,
 				0, 0, &val);
-	ufshcd_rpm_put_sync(hba);
+	ufshcd_rpm_put(hba);
 
 	if (err)
 		dev_err(hba->dev, "%s: Failed to update rtc %d\n", __func__, err);
-- 
2.18.0