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/sh_eth.c b/drivers/net/sh_eth.c
index 0709b7512467..341882f959f3 100644
--- a/drivers/net/sh_eth.c
+++ b/drivers/net/sh_eth.c
@@ -1108,7 +1108,7 @@ static int sh_eth_start_xmit(struct sk_buff *skb, struct net_device *ndev)
                 if (!sh_eth_txfree(ndev)) {
                         netif_stop_queue(ndev);
                         spin_unlock_irqrestore(&mdp->lock, flags);
-                        return 1;
+                        return NETDEV_TX_BUSY;
                 }
         }
         spin_unlock_irqrestore(&mdp->lock, flags);