convert ATM drivers to netdev_tx_t

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/atm/br2684.c b/net/atm/br2684.c
index 848af11..d6be0d1 100644
--- a/net/atm/br2684.c
+++ b/net/atm/br2684.c
@@ -223,7 +223,8 @@
 	return list_empty(&brdev->brvccs) ? NULL : list_entry_brvcc(brdev->brvccs.next);	/* 1 vcc/dev right now */
 }
 
-static int br2684_start_xmit(struct sk_buff *skb, struct net_device *dev)
+static netdev_tx_t br2684_start_xmit(struct sk_buff *skb,
+				     struct net_device *dev)
 {
 	struct br2684_dev *brdev = BRPRIV(dev);
 	struct br2684_vcc *brvcc;