net: trans_start cleanups

Now that core network takes care of trans_start updates, dont do it
in drivers themselves, if possible. Drivers can avoid one cache miss
(on dev->trans_start) in their start_xmit() handler.

Exceptions are NETIF_F_LLTX drivers

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 3 deletions

diff --git a/drivers/net/lance.c b/drivers/net/lance.c
index 7b9447646f8a..21f8adaa87c1 100644
--- a/drivers/net/lance.c
+++ b/drivers/net/lance.c
@@ -945,7 +945,7 @@ static void lance_tx_timeout (struct net_device *dev)
 #endif
         lance_restart (dev, 0x0043, 1);
 
-        dev->trans_start = jiffies;
+        dev->trans_start = jiffies; /* prevent tx timeout */
         netif_wake_queue (dev);
 }
 
@@ -1011,8 +1011,6 @@ static netdev_tx_t lance_start_xmit(struct sk_buff *skb,
         outw(0x0000, ioaddr+LANCE_ADDR);
         outw(0x0048, ioaddr+LANCE_DATA);
 
-        dev->trans_start = jiffies;
-
         if ((lp->cur_tx - lp->dirty_tx) >= TX_RING_SIZE)
                 netif_stop_queue(dev);