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, 1 deletions

diff --git a/drivers/net/arm/ixp4xx_eth.c b/drivers/net/arm/ixp4xx_eth.c
index 7800d7dfd299..24df0325090c 100644
--- a/drivers/net/arm/ixp4xx_eth.c
+++ b/drivers/net/arm/ixp4xx_eth.c
@@ -708,7 +708,6 @@ static int eth_xmit(struct sk_buff *skb, struct net_device *dev)
         /* NPE firmware pads short frames with zeros internally */
         wmb();
         queue_put_desc(TX_QUEUE(port->id), tx_desc_phys(port, n), desc);
-        dev->trans_start = jiffies;
 
         if (qmgr_stat_below_low_watermark(txreadyq)) { /* empty */
 #if DEBUG_TX