net: dont update dev->trans_start

Second round of drivers for Gb cards (and NIU one I forgot in the 10GB round)

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, 6 deletions

diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c
index eb65e25989f3..a39b534fb43e 100644
--- a/drivers/net/tg3.c
+++ b/drivers/net/tg3.c
@@ -5194,9 +5194,7 @@ static int tg3_start_xmit(struct sk_buff *skb, struct net_device *dev)
         }
 
 out_unlock:
-        mmiowb();
-
-        dev->trans_start = jiffies;
+        mmiowb();
 
         return NETDEV_TX_OK;
 }
@@ -5407,9 +5405,7 @@ static int tg3_start_xmit_dma_bug(struct sk_buff *skb, struct net_device *dev)
         }
 
 out_unlock:
-        mmiowb();
-
-        dev->trans_start = jiffies;
+        mmiowb();
 
         return NETDEV_TX_OK;
 }