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, 0 insertions, 2 deletions

diff --git a/drivers/net/irda/w83977af_ir.c b/drivers/net/irda/w83977af_ir.c
index cb0cb758be64..1f9c3f08d1a3 100644
--- a/drivers/net/irda/w83977af_ir.c
+++ b/drivers/net/irda/w83977af_ir.c
@@ -515,7 +515,6 @@ static netdev_tx_t w83977af_hard_xmit(struct sk_buff *skb,
                 /* Check for empty frame */
                 if (!skb->len) {
                         w83977af_change_speed(self, speed); 
-                        dev->trans_start = jiffies;
                         dev_kfree_skb(skb);
                         return NETDEV_TX_OK;
                 } else
@@ -549,7 +548,6 @@ static netdev_tx_t w83977af_hard_xmit(struct sk_buff *skb,
                 switch_bank(iobase, SET0);
                 outb(ICR_ETXTHI, iobase+ICR);
         }
-        dev->trans_start = jiffies;
         dev_kfree_skb(skb);
 
         /* Restore set register */