net: use symbolic values for ndo_start_xmit() return codes

Convert magic values 1 and -1 to NETDEV_TX_BUSY and NETDEV_TX_LOCKED respectively.

0 (NETDEV_TX_OK) is not changed to keep the noise down, except in very few cases
where its in direct proximity to one of the other values.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 3 insertions, 3 deletions

diff --git a/drivers/net/wan/dlci.c b/drivers/net/wan/dlci.c
index e8d155c3e59f..2fa275a58f9d 100644
--- a/drivers/net/wan/dlci.c
+++ b/drivers/net/wan/dlci.c
@@ -205,15 +205,15 @@ static int dlci_transmit(struct sk_buff *skb, struct net_device *dev)
         {
                 case DLCI_RET_OK:
                         dev->stats.tx_packets++;
-                        ret = 0;
+                        ret = NETDEV_TX_OK;
                         break;
                         case DLCI_RET_ERR:
                         dev->stats.tx_errors++;
-                        ret = 0;
+                        ret = NETDEV_TX_OK;
                         break;
                         case DLCI_RET_DROP:
                         dev->stats.tx_dropped++;
-                        ret = 1;
+                        ret = NETDEV_TX_BUSY;
                         break;
         }
         /* Alan Cox recommends always returning 0, and always freeing the packet */