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/3c59x.c b/drivers/net/3c59x.c
index 97525307ed27..dab2afac6ddc 100644
--- a/drivers/net/3c59x.c
+++ b/drivers/net/3c59x.c
@@ -1917,7 +1917,7 @@ static void vortex_tx_timeout(struct net_device *dev)
 
         /* Issue Tx Enable */
         iowrite16(TxEnable, ioaddr + EL3_CMD);
-        dev->trans_start = jiffies;
+        dev->trans_start = jiffies; /* prevent tx timeout */
 
         /* Switch to register set 7 for normal use. */
         EL3WINDOW(7);
@@ -2063,7 +2063,6 @@ vortex_start_xmit(struct sk_buff *skb, struct net_device *dev)
                 }
         }
 
-        dev->trans_start = jiffies;
 
         /* Clear the Tx status stack. */
         {
@@ -2174,7 +2173,6 @@ boomerang_start_xmit(struct sk_buff *skb, struct net_device *dev)
         }
         iowrite16(DownUnstall, ioaddr + EL3_CMD);
         spin_unlock_irqrestore(&vp->lock, flags);
-        dev->trans_start = jiffies;
         return NETDEV_TX_OK;
 }