diff mbox series

[4.9,07/19] s390/lcs: fix variable dereferenced before check

Message ID 20220516193613.719040783@linuxfoundation.org
State New
Headers show
Series None | expand

Commit Message

gregkh@linuxfoundation.org May 16, 2022, 7:36 p.m. UTC 
From: Alexandra Winter <wintera@linux.ibm.com>

[ Upstream commit 671bb35c8e746439f0ed70815968f9a4f20a8deb ]

smatch complains about
drivers/s390/net/lcs.c:1741 lcs_get_control() warn: variable dereferenced before check 'card->dev' (see line 1739)

Fixes: 27eb5ac8f015 ("[PATCH] s390: lcs driver bug fixes and improvements [1/2]")
Signed-off-by: Alexandra Winter <wintera@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/s390/net/lcs.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)
diff mbox series

Patch

diff --git a/drivers/s390/net/lcs.c b/drivers/s390/net/lcs.c
index 251db0a02e73..4d3caad7e981 100644
--- a/drivers/s390/net/lcs.c
+++ b/drivers/s390/net/lcs.c
@@ -1761,10 +1761,11 @@  lcs_get_control(struct lcs_card *card, struct lcs_cmd *cmd)
 			lcs_schedule_recovery(card);
 			break;
 		case LCS_CMD_STOPLAN:
-			pr_warn("Stoplan for %s initiated by LGW\n",
-				card->dev->name);
-			if (card->dev)
+			if (card->dev) {
+				pr_warn("Stoplan for %s initiated by LGW\n",
+					card->dev->name);
 				netif_carrier_off(card->dev);
+			}
 			break;
 		default:
 			LCS_DBF_TEXT(5, trace, "noLGWcmd");