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, 1 insertions, 1 deletions

diff --git a/drivers/net/sonic.c b/drivers/net/sonic.c
index 211e805c1223..e4255d829380 100644
--- a/drivers/net/sonic.c
+++ b/drivers/net/sonic.c
@@ -223,7 +223,7 @@ static int sonic_send_packet(struct sk_buff *skb, struct net_device *dev)
         if (!laddr) {
                 printk(KERN_ERR "%s: failed to map tx DMA buffer.\n", dev->name);
                 dev_kfree_skb(skb);
-                return 1;
+                return NETDEV_TX_BUSY
         }
 
         sonic_tda_put(dev, entry, SONIC_TD_STATUS, 0);       /* clear status */