2987 static int __e1000_maybe_stop_tx(struct net_device *netdev, int size)

  2987 static int __e1000_maybe_stop_tx(struct net_device *netdev, int size)

  2988 {

  2988 {

  2989 	struct e1000_adapter *adapter = netdev_priv(netdev);

  2989 	struct e1000_adapter *adapter = netdev_priv(netdev);

  2990 	struct e1000_tx_ring *tx_ring = adapter->tx_ring;

  2990 	struct e1000_tx_ring *tx_ring = adapter->tx_ring;

  2991 

  2991 

  2992 	netif_stop_queue(netdev);

  2997 	netif_stop_queue(netdev);

  2993 	/* Herbert's original patch had:

  2998 	/* Herbert's original patch had:

  2994 	 *  smp_mb__after_netif_stop_queue();

  2999 	 *  smp_mb__after_netif_stop_queue();

  2995 	 * but since that doesn't exist yet, just open code it. */

  3000 	 * but since that doesn't exist yet, just open code it. */

  2996 	smp_mb();

  3001 	smp_mb();