From: Dan Carpenter <dan.carpenter@oracle.com>
Date: Thu, 7 Nov 2013 07:44:45 +0000 (+0300)
Subject: 6lowpan: release device on error path
X-Git-Tag: v3.12.71~21
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8303768920eeff9f903e1ddd84f9c08de916b56d;p=thirdparty%2Fkernel%2Fstable.git

6lowpan: release device on error path

commit 78032f9b3eae3a43da9468d8ce30caa6be84f89d upstream.

We recently added a new error path and it needs a dev_put().

Fixes: 7adac1ec8198 ('6lowpan: Only make 6lowpan links to IEEE802154 devices')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---

diff --git a/net/ieee802154/6lowpan.c b/net/ieee802154/6lowpan.c
index ceabe6f13216a..70348be444c18 100644
--- a/net/ieee802154/6lowpan.c
+++ b/net/ieee802154/6lowpan.c
@@ -1392,8 +1392,10 @@ static int lowpan_newlink(struct net *src_net, struct net_device *dev,
 	real_dev = dev_get_by_index(src_net, nla_get_u32(tb[IFLA_LINK]));
 	if (!real_dev)
 		return -ENODEV;
-	if (real_dev->type != ARPHRD_IEEE802154)
+	if (real_dev->type != ARPHRD_IEEE802154) {
+		dev_put(real_dev);
 		return -EINVAL;
+	}
 
 	lowpan_dev_info(dev)->real_dev = real_dev;
 	lowpan_dev_info(dev)->fragment_tag = 0;