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/tc35815.c b/drivers/net/tc35815.c
index 36149ddace46..be08b75dbc15 100644
--- a/drivers/net/tc35815.c
+++ b/drivers/net/tc35815.c
@@ -1357,8 +1357,6 @@ static int tc35815_send_packet(struct sk_buff *skb, struct net_device *dev)
         }
         lp->tfd_start = (lp->tfd_start + 1) % TX_FD_NUM;
 
-        dev->trans_start = jiffies;
-
         /* If we just used up the very last entry in the
          * TX ring on this device, tell the queueing
          * layer to send no more.