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, 6 deletions

diff --git a/drivers/net/3c505.c b/drivers/net/3c505.c
index 8d584f5fd02d..88d766ee0e1b 100644
--- a/drivers/net/3c505.c
+++ b/drivers/net/3c505.c
@@ -1055,7 +1055,7 @@ static void elp_timeout(struct net_device *dev)
                    (stat & ACRF) ? "interrupt" : "command");
         if (elp_debug >= 1)
                 pr_debug("%s: status %#02x\n", dev->name, stat);
-        dev->trans_start = jiffies;
+        dev->trans_start = jiffies; /* prevent tx timeout */
         dev->stats.tx_dropped++;
         netif_wake_queue(dev);
 }
@@ -1093,11 +1093,6 @@ static netdev_tx_t elp_start_xmit(struct sk_buff *skb, struct net_device *dev)
         if (elp_debug >= 3)
                 pr_debug("%s: packet of length %d sent\n", dev->name, (int) skb->len);
 
-        /*
-         * start the transmit timeout
-         */
-        dev->trans_start = jiffies;
-
         prime_rx(dev);
         spin_unlock_irqrestore(&adapter->lock, flags);
         netif_start_queue(dev);