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>
diff --git a/drivers/net/tokenring/ibmtr.c b/drivers/net/tokenring/ibmtr.c
index eebdaae..91e6c78 100644
--- a/drivers/net/tokenring/ibmtr.c
+++ b/drivers/net/tokenring/ibmtr.c
@@ -1041,7 +1041,6 @@
writew(ti->exsap_station_id, ti->srb + STATION_ID_OFST);
writeb(CMD_IN_SRB, ti->mmio + ACA_OFFSET + ACA_SET + ISRA_ODD);
spin_unlock_irqrestore(&(ti->lock), flags);
- dev->trans_start = jiffies;
return NETDEV_TX_OK;
}
diff --git a/drivers/net/tokenring/smctr.c b/drivers/net/tokenring/smctr.c
index e405601..213b9af 100644
--- a/drivers/net/tokenring/smctr.c
+++ b/drivers/net/tokenring/smctr.c
@@ -4562,7 +4562,7 @@
* fake transmission time and go on trying. Our own timeout
* routine is in sktr_timer_chk()
*/
- dev->trans_start = jiffies;
+ dev->trans_start = jiffies; /* prevent tx timeout */
netif_wake_queue(dev);
}
diff --git a/drivers/net/tokenring/tms380tr.c b/drivers/net/tokenring/tms380tr.c
index c169fd0..8cb126a 100644
--- a/drivers/net/tokenring/tms380tr.c
+++ b/drivers/net/tokenring/tms380tr.c
@@ -592,7 +592,7 @@
* fake transmission time and go on trying. Our own timeout
* routine is in tms380tr_timer_chk()
*/
- dev->trans_start = jiffies;
+ dev->trans_start = jiffies; /* prevent tx timeout */
netif_wake_queue(dev);
}