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authorEric Dumazet <eric.dumazet@gmail.com>2010-05-10 16:01:31 +0400
committerDavid S. Miller <davem@davemloft.net>2010-05-10 16:01:31 +0400
commit1ae5dc342ac78d7a42965fd1f323815f6f5ef2c1 (patch)
treed1955a7639e99832590df26466a34d5786a880ae /drivers/net/wan/lmc
parent2b0b05ddc04b6d45e71cd36405df512075786f1e (diff)
downloadlinux-1ae5dc342ac78d7a42965fd1f323815f6f5ef2c1.tar.xz
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>
Diffstat (limited to 'drivers/net/wan/lmc')
-rw-r--r--drivers/net/wan/lmc/lmc_main.c6
1 files changed, 2 insertions, 4 deletions
diff --git a/drivers/net/wan/lmc/lmc_main.c b/drivers/net/wan/lmc/lmc_main.c
index b27850377121..e2c6f7f4f51c 100644
--- a/drivers/net/wan/lmc/lmc_main.c
+++ b/drivers/net/wan/lmc/lmc_main.c
@@ -1506,8 +1506,6 @@ static netdev_tx_t lmc_start_xmit(struct sk_buff *skb,
/* send now! */
LMC_CSR_WRITE (sc, csr_txpoll, 0);
- dev->trans_start = jiffies;
-
spin_unlock_irqrestore(&sc->lmc_lock, flags);
lmc_trace(dev, "lmc_start_xmit_out");
@@ -2103,7 +2101,7 @@ static void lmc_driver_timeout(struct net_device *dev)
printk("%s: Xmitter busy|\n", dev->name);
sc->extra_stats.tx_tbusy_calls++;
- if (jiffies - dev->trans_start < TX_TIMEOUT)
+ if (jiffies - dev_trans_start(dev) < TX_TIMEOUT)
goto bug_out;
/*
@@ -2135,7 +2133,7 @@ static void lmc_driver_timeout(struct net_device *dev)
sc->lmc_device->stats.tx_errors++;
sc->extra_stats.tx_ProcTimeout++; /* -baz */
- dev->trans_start = jiffies;
+ dev->trans_start = jiffies; /* prevent tx timeout */
bug_out: