usbnet: 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/net/usb/kaweth.c b/drivers/net/usb/kaweth.c
index 200fe3d..7f39736 100644
--- a/drivers/net/usb/kaweth.c
+++ b/drivers/net/usb/kaweth.c
@@ -803,7 +803,8 @@
 /****************************************************************
  *     kaweth_start_xmit
  ****************************************************************/
-static int kaweth_start_xmit(struct sk_buff *skb, struct net_device *net)
+static netdev_tx_t kaweth_start_xmit(struct sk_buff *skb,
+					   struct net_device *net)
 {
 	struct kaweth_device *kaweth = netdev_priv(net);
 	__le16 *private_header;