[PATCH 4.9 07/19] s390/lcs: fix variable dereferenced before check
From: Greg Kroah-Hartman
Date: Mon May 16 2022 - 15:40:23 EST
From: Alexandra Winter <wintera@xxxxxxxxxxxxx>
[ 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@xxxxxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/s390/net/lcs.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
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");
--
2.35.1