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ixgb: remove lock access in the fast path 

This mimics a change made in the e1000 driver that imitates a slick
tg3 way of avoiding grabbing the lock around restarting the tx queue.

Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Signed-off-by: John Ronciak <john.ronciak@intel.com>
This commit is contained in:
Auke Kok 2006-05-26 09:35:47 -07:00 committed by Auke Kok
parent 3f3dc0dd20
commit 3352a3b20c
1 changed files with 6 additions and 6 deletions
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12
drivers/net/ixgb/ixgb_main.c
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@ -1800,13 +1800,13 @@ ixgb_clean_tx_irq(struct ixgb_adapter *adapter)
tx_ring->next_to_clean = i;
spin_lock(&adapter->tx_lock);
if(cleaned && netif_queue_stopped(netdev) && netif_carrier_ok(netdev) &&
(IXGB_DESC_UNUSED(tx_ring) > IXGB_TX_QUEUE_WAKE)) {
netif_wake_queue(netdev);
if (unlikely(netif_queue_stopped(netdev))) {
spin_lock(&adapter->tx_lock);
if (netif_queue_stopped(netdev) && netif_carrier_ok(netdev) &&
(IXGB_DESC_UNUSED(tx_ring) > IXGB_TX_QUEUE_WAKE))
netif_wake_queue(netdev);
spin_unlock(&adapter->tx_lock);
}
spin_unlock(&adapter->tx_lock);
if(adapter->detect_tx_hung) {
/* detect a transmit hang in hardware, this serializes the