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, 2 insertions, 3 deletions

diff --git a/drivers/net/atarilance.c b/drivers/net/atarilance.c
index a8686bfec7a..b57d7dee389 100644
--- a/drivers/net/atarilance.c
+++ b/drivers/net/atarilance.c
@@ -767,8 +767,8 @@ static void lance_tx_timeout (struct net_device *dev)
         /* lance_restart, essentially */
         lance_init_ring(dev);
         REGA( CSR0 ) = CSR0_INEA | CSR0_INIT | CSR0_STRT;
-        dev->trans_start = jiffies;
-        netif_wake_queue (dev);
+        dev->trans_start = jiffies; /* prevent tx timeout */
+        netif_wake_queue(dev);
 }
 
 /* XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX */
@@ -836,7 +836,6 @@ static int lance_start_xmit( struct sk_buff *skb, struct net_device *dev )
 
         /* Trigger an immediate send poll. */
         DREG = CSR0_INEA | CSR0_TDMD;
-        dev->trans_start = jiffies;
 
         if ((MEM->tx_head[(entry+1) & TX_RING_MOD_MASK].flag & TMD1_OWN) ==
                 TMD1_OWN_HOST)