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, 2 insertions, 4 deletions

diff --git a/drivers/net/sgiseeq.c b/drivers/net/sgiseeq.c
index c8fc896fc460..cc4bd8c65f8b 100644
--- a/drivers/net/sgiseeq.c
+++ b/drivers/net/sgiseeq.c
@@ -574,7 +574,7 @@ static inline int sgiseeq_reset(struct net_device *dev)
         if (err)
                 return err;
 
-        dev->trans_start = jiffies;
+        dev->trans_start = jiffies; /* prevent tx timeout */
         netif_wake_queue(dev);
 
         return 0;
@@ -638,8 +638,6 @@ static int sgiseeq_start_xmit(struct sk_buff *skb, struct net_device *dev)
         if (!(hregs->tx_ctrl & HPC3_ETXCTRL_ACTIVE))
                 kick_tx(dev, sp, hregs);
 
-        dev->trans_start = jiffies;
-
         if (!TX_BUFFS_AVAIL(sp))
                 netif_stop_queue(dev);
         spin_unlock_irqrestore(&sp->tx_lock, flags);
@@ -652,7 +650,7 @@ static void timeout(struct net_device *dev)
         printk(KERN_NOTICE "%s: transmit timed out, resetting\n", dev->name);
         sgiseeq_reset(dev);
 
-        dev->trans_start = jiffies;
+        dev->trans_start = jiffies; /* prevent tx timeout */
         netif_wake_queue(dev);
 }