diff mbox series

[5.4,19/21] scsi: ufs: Unlock on a couple error paths

Message ID 20210505112325.358920378@linuxfoundation.org
State New
Headers show
Series None | expand

Commit Message

Greg KH May 5, 2021, 12:04 p.m. UTC 
From: Dan Carpenter <dan.carpenter@oracle.com>

commit bb14dd1564c90d333f51e69dd6fc880b8233ce11 upstream.

We introduced a few new error paths, but we can't return directly, we first
have to unlock "hba->clk_scaling_lock" first.

Fixes: a276c19e3e98 ("scsi: ufs: Avoid busy-waiting by eliminating tag conflicts")
Link: https://lore.kernel.org/r/20191213104828.7i64cpoof26rc4fw@kili.mountain
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/scsi/ufs/ufshcd.c |   14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)
diff mbox series

Patch

--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -2639,8 +2639,10 @@  static int ufshcd_exec_dev_cmd(struct uf
 	 * the maximum wait time is bounded by SCSI request timeout.
 	 */
 	req = blk_get_request(q, REQ_OP_DRV_OUT, 0);
-	if (IS_ERR(req))
-		return PTR_ERR(req);
+	if (IS_ERR(req)) {
+		err = PTR_ERR(req);
+		goto out_unlock;
+	}
 	tag = req->tag;
 	WARN_ON_ONCE(!ufshcd_valid_tag(hba, tag));
 
@@ -2668,6 +2670,7 @@  static int ufshcd_exec_dev_cmd(struct uf
 
 out_put_tag:
 	blk_put_request(req);
+out_unlock:
 	up_read(&hba->clk_scaling_lock);
 	return err;
 }
@@ -5842,8 +5845,10 @@  static int ufshcd_issue_devman_upiu_cmd(
 	down_read(&hba->clk_scaling_lock);
 
 	req = blk_get_request(q, REQ_OP_DRV_OUT, 0);
-	if (IS_ERR(req))
-		return PTR_ERR(req);
+	if (IS_ERR(req)) {
+		err = PTR_ERR(req);
+		goto out_unlock;
+	}
 	tag = req->tag;
 	WARN_ON_ONCE(!ufshcd_valid_tag(hba, tag));
 
@@ -5920,6 +5925,7 @@  static int ufshcd_issue_devman_upiu_cmd(
 	}
 
 	blk_put_request(req);
+out_unlock:
 	up_read(&hba->clk_scaling_lock);
 	return err;
 }