From: Dan Carpenter <error27@gmail.com>
Date: Tue, 30 Aug 2011 03:51:09 +0000 (+0000)
Subject: 6LoWPAN: call dev_put() on error in lowpan_newlink()
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=dc00fd44413e9d4310d0dc6bcc3bd8e57ba8f064;p=deliverable%2Flinux.git

6LoWPAN: call dev_put() on error in lowpan_newlink()

We should release the dev_hold() on error before returning here.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/net/ieee802154/6lowpan.c b/net/ieee802154/6lowpan.c
index 5dc04890e0c5..f0d15365722a 100644
--- a/net/ieee802154/6lowpan.c
+++ b/net/ieee802154/6lowpan.c
@@ -793,8 +793,11 @@ static int lowpan_newlink(struct net *src_net, struct net_device *dev,
 	mutex_init(&lowpan_dev_info(dev)->dev_list_mtx);
 
 	entry = kzalloc(sizeof(struct lowpan_dev_record), GFP_KERNEL);
-	if (!entry)
+	if (!entry) {
+		dev_put(real_dev);
+		lowpan_dev_info(dev)->real_dev = NULL;
 		return -ENOMEM;
+	}
 
 	entry->ldev = dev;