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/plip.c b/drivers/net/plip.c
index 0be0f0b164f3..7a62f781fef2 100644
--- a/drivers/net/plip.c
+++ b/drivers/net/plip.c
@@ -955,12 +955,12 @@ plip_tx_packet(struct sk_buff *skb, struct net_device *dev)
         struct plip_local *snd = &nl->snd_data;
 
         if (netif_queue_stopped(dev))
-                return 1;
+                return NETDEV_TX_BUSY;
 
         /* We may need to grab the bus */
         if (!nl->port_owner) {
                 if (parport_claim(nl->pardev))
-                        return 1;
+                        return NETDEV_TX_BUSY;
                 nl->port_owner = 1;
         }
 
@@ -969,7 +969,7 @@ plip_tx_packet(struct sk_buff *skb, struct net_device *dev)
         if (skb->len > dev->mtu + dev->hard_header_len) {
                 printk(KERN_WARNING "%s: packet too big, %d.\n", dev->name, (int)skb->len);
                 netif_start_queue (dev);
-                return 1;
+                return NETDEV_TX_BUSY;
         }
 
         if (net_debug > 2)