WAN: Generic HDLC now uses IFF_WAN_HDLC private flag.

Signed-off-by: Krzysztof Hałasa <khc@pm.waw.pl>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/wan/hdlc.c b/drivers/net/wan/hdlc.c
index 1f2a140..d83cd78 100644
--- a/drivers/net/wan/hdlc.c
+++ b/drivers/net/wan/hdlc.c
@@ -106,7 +106,7 @@
 	if (dev_net(dev) != &init_net)
 		return NOTIFY_DONE;
 
-	if (dev->get_stats != hdlc_get_stats)
+	if (!(dev->priv_flags & IFF_WAN_HDLC))
 		return NOTIFY_DONE; /* not an HDLC device */
 
 	if (event != NETDEV_CHANGE)
@@ -235,6 +235,7 @@
 	 */
 	dev->get_stats		 = hdlc_get_stats;
 	dev->flags		 = IFF_POINTOPOINT | IFF_NOARP;
+	dev->priv_flags		 = IFF_WAN_HDLC;
 	dev->mtu		 = HDLC_MAX_MTU;
 	dev->type		 = ARPHRD_RAWHDLC;
 	dev->hard_header_len	 = 16;