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, 2 insertions, 2 deletions

diff --git a/drivers/net/hamradio/mkiss.c b/drivers/net/hamradio/mkiss.c
index 032c0db4c410..fda2fc83e9a1 100644
--- a/drivers/net/hamradio/mkiss.c
+++ b/drivers/net/hamradio/mkiss.c
@@ -531,7 +531,7 @@ static int ax_xmit(struct sk_buff *skb, struct net_device *dev)
 
         if (!netif_running(dev))  {
                 printk(KERN_ERR "mkiss: %s: xmit call when iface is down\n", dev->name);
-                return 1;
+                return NETDEV_TX_BUSY;
         }
 
         if (netif_queue_stopped(dev)) {
@@ -541,7 +541,7 @@ static int ax_xmit(struct sk_buff *skb, struct net_device *dev)
                  */
                 if (time_before(jiffies, dev->trans_start + 20 * HZ)) {
                         /* 20 sec timeout not reached */
-                        return 1;
+                        return NETDEV_TX_BUSY;
                 }
 
                 printk(KERN_ERR "mkiss: %s: transmit timed out, %s?\n", dev->name,