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/wan/x25_asy.c b/drivers/net/wan/x25_asy.c
index d67e208..1047920 100644
--- a/drivers/net/wan/x25_asy.c
+++ b/drivers/net/wan/x25_asy.c
@@ -308,7 +308,7 @@
 		printk(KERN_ERR "%s: xmit call when iface is down\n",
 			dev->name);
 		kfree_skb(skb);
-		return 0;
+		return NETDEV_TX_OK;
 	}
 
 	switch (skb->data[0]) {
@@ -319,14 +319,14 @@
 		if (err != LAPB_OK)
 			printk(KERN_ERR "x25_asy: lapb_connect_request error - %d\n", err);
 		kfree_skb(skb);
-		return 0;
+		return NETDEV_TX_OK;
 	case 0x02: /* Disconnect request .. do nothing - hang up ?? */
 		err = lapb_disconnect_request(dev);
 		if (err != LAPB_OK)
 			printk(KERN_ERR "x25_asy: lapb_disconnect_request error - %d\n", err);
 	default:
 		kfree_skb(skb);
-		return  0;
+		return NETDEV_TX_OK;
 	}
 	skb_pull(skb, 1);	/* Remove control byte */
 	/*
@@ -344,9 +344,9 @@
 	if (err != LAPB_OK) {
 		printk(KERN_ERR "x25_asy: lapb_data_request error - %d\n", err);
 		kfree_skb(skb);
-		return 0;
+		return NETDEV_TX_OK;
 	}
-	return 0;
+	return NETDEV_TX_OK;
 }