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/isdn/i4l/isdn_net.c b/drivers/isdn/i4l/isdn_net.c
index de4aad0..8209ed6 100644
--- a/drivers/isdn/i4l/isdn_net.c
+++ b/drivers/isdn/i4l/isdn_net.c
@@ -1202,7 +1202,7 @@
 			if (!(ISDN_NET_DIALMODE(*lp) == ISDN_NET_DM_AUTO)) {
 				isdn_net_unreachable(ndev, skb, "dial rejected: interface not in dialmode `auto'");
 				dev_kfree_skb(skb);
-				return 0;
+				return NETDEV_TX_OK;
 			}
 			if (lp->phone[1]) {
 				ulong flags;
@@ -1215,7 +1215,7 @@
 					if(time_before(jiffies, lp->dialwait_timer)) {
 						isdn_net_unreachable(ndev, skb, "dial rejected: retry-time not reached");
 						dev_kfree_skb(skb);
-						return 0;
+						return NETDEV_TX_OK;
 					} else
 						lp->dialwait_timer = 0;
 				}
@@ -1243,7 +1243,7 @@
 					isdn_net_unreachable(ndev, skb,
 							   "No channel");
 					dev_kfree_skb(skb);
-					return 0;
+					return NETDEV_TX_OK;
 				}
 				/* Log packet, which triggered dialing */
 				if (dev->net_verbose)
@@ -1258,7 +1258,7 @@
 						dev_kfree_skb(skb);
 						isdn_net_unbind_channel(lp);
 						spin_unlock_irqrestore(&dev->lock, flags);
-						return 0;	/* STN (skb to nirvana) ;) */
+						return NETDEV_TX_OK;	/* STN (skb to nirvana) ;) */
 					}
 #ifdef CONFIG_IPPP_FILTER
 					if (isdn_ppp_autodial_filter(skb, lp)) {
@@ -1267,7 +1267,7 @@
 						spin_unlock_irqrestore(&dev->lock, flags);
 						isdn_net_unreachable(ndev, skb, "dial rejected: packet filtered");
 						dev_kfree_skb(skb);
-						return 0;
+						return NETDEV_TX_OK;
 					}
 #endif
 					spin_unlock_irqrestore(&dev->lock, flags);
@@ -1285,7 +1285,7 @@
 				isdn_net_unreachable(ndev, skb,
 						     "No phone number");
 				dev_kfree_skb(skb);
-				return 0;
+				return NETDEV_TX_OK;
 			}
 		} else {
 			/* Device is connected to an ISDN channel */