net: use NETDEV_TX_OK instead of 0 in ndo_start_xmit() functions

This patch is the result of an automatic spatch transformation to convert
all ndo_start_xmit() return values of 0 to NETDEV_TX_OK.

Some occurences are missed by the automatic conversion, those will be
handled in a seperate patch.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/via-rhine.c b/drivers/net/via-rhine.c
index d3489a3..7152201 100644
--- a/drivers/net/via-rhine.c
+++ b/drivers/net/via-rhine.c
@@ -1225,7 +1225,7 @@
 	entry = rp->cur_tx % TX_RING_SIZE;
 
 	if (skb_padto(skb, ETH_ZLEN))
-		return 0;
+		return NETDEV_TX_OK;
 
 	rp->tx_skbuff[entry] = skb;
 
@@ -1237,7 +1237,7 @@
 			dev_kfree_skb(skb);
 			rp->tx_skbuff[entry] = NULL;
 			dev->stats.tx_dropped++;
-			return 0;
+			return NETDEV_TX_OK;
 		}
 
 		/* Padding is not copied and so must be redone. */
@@ -1285,7 +1285,7 @@
 		printk(KERN_DEBUG "%s: Transmit frame #%d queued in slot %d.\n",
 		       dev->name, rp->cur_tx-1, entry);
 	}
-	return 0;
+	return NETDEV_TX_OK;
 }
 
 /* The interrupt handler does all of the Rx thread work and cleans up