Merge rsync://rsync.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6

1 files changed, 18 insertions, 6 deletions

diff --git a/net/netrom/nr_dev.c b/net/netrom/nr_dev.c
index 9b8eb54971a..4700d5225b7 100644
--- a/net/netrom/nr_dev.c
+++ b/net/netrom/nr_dev.c
@@ -128,25 +128,37 @@ static int nr_header(struct sk_buff *skb, struct net_device *dev, unsigned short
 	return -37;
 }
 
-static int nr_set_mac_address(struct net_device *dev, void *addr)
+static int __must_check nr_set_mac_address(struct net_device *dev, void *addr)
 {
 	struct sockaddr *sa = addr;
+	int err;
+
+	if (!memcmp(dev->dev_addr, sa->sa_data, dev->addr_len))
+		return 0;
+
+	if (dev->flags & IFF_UP) {
+		err = ax25_listen_register((ax25_address *)sa->sa_data, NULL);
+		if (err)
+			return err;
 
-	if (dev->flags & IFF_UP)
 		ax25_listen_release((ax25_address *)dev->dev_addr, NULL);
+	}
 
 	memcpy(dev->dev_addr, sa->sa_data, dev->addr_len);
 
-	if (dev->flags & IFF_UP)
-		ax25_listen_register((ax25_address *)dev->dev_addr, NULL);
-
 	return 0;
 }
 
 static int nr_open(struct net_device *dev)
 {
+	int err;
+
+	err = ax25_listen_register((ax25_address *)dev->dev_addr, NULL);
+	if (err)
+		return err;
+
 	netif_start_queue(dev);
-	ax25_listen_register((ax25_address *)dev->dev_addr, NULL);
+
 	return 0;
 }