isdn: convert to netdev_tx_t

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/isdn/hysdn/hysdn_net.c b/drivers/isdn/hysdn/hysdn_net.c
index c73004b..72eb926 100644
--- a/drivers/isdn/hysdn/hysdn_net.c
+++ b/drivers/isdn/hysdn/hysdn_net.c
@@ -119,7 +119,7 @@
 /* send a packet on this interface. */
 /* new style for kernel >= 2.3.33   */
 /************************************/
-static int
+static netdev_tx_t
 net_send_packet(struct sk_buff *skb, struct net_device *dev)
 {
 	struct net_local *lp = (struct net_local *) dev;