From: Wei Yongjun <weiyongjun1@huawei.com>
Date: Tue, 11 Apr 2017 16:02:02 +0000 (+0000)
Subject: devlink: fix return value check in devlink_dpipe_header_put()
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=cb6bf9cfdb5e26dfb7eb9b955b2f24d82703e27d;p=openwrt%2Fstaging%2Fblogic.git

devlink: fix return value check in devlink_dpipe_header_put()

Fix the return value check which testing the wrong variable
in devlink_dpipe_header_put().

Fixes: 1555d204e743 ("devlink: Support for pipeline debug (dpipe)")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/net/core/devlink.c b/net/core/devlink.c
index 24b766003a61..0afac5800b57 100644
--- a/net/core/devlink.c
+++ b/net/core/devlink.c
@@ -2031,7 +2031,7 @@ static int devlink_dpipe_header_put(struct sk_buff *skb,
 	int err;
 
 	header_attr = nla_nest_start(skb, DEVLINK_ATTR_DPIPE_HEADER);
-	if (!header)
+	if (!header_attr)
 		return -EMSGSIZE;
 
 	if (nla_put_string(skb, DEVLINK_ATTR_DPIPE_HEADER_NAME, header->name) ||