2973 static int __e1000_maybe_stop_tx(struct net_device *netdev, int size)

  2973 static int __e1000_maybe_stop_tx(struct net_device *netdev, int size)

  2974 {

  2974 {

  2975 	struct e1000_adapter *adapter = netdev_priv(netdev);

  2975 	struct e1000_adapter *adapter = netdev_priv(netdev);

  2976 	struct e1000_tx_ring *tx_ring = adapter->tx_ring;

  2976 	struct e1000_tx_ring *tx_ring = adapter->tx_ring;

  2977 

  2977 

  2978 	netif_stop_queue(netdev);

  2982 	netif_stop_queue(netdev);

  2979 	/* Herbert's original patch had:

  2983 	/* Herbert's original patch had:

  2980 	 *  smp_mb__after_netif_stop_queue();

  2984 	 *  smp_mb__after_netif_stop_queue();

  2981 	 * but since that doesn't exist yet, just open code it. */

  2985 	 * but since that doesn't exist yet, just open code it. */

  2982 	smp_mb();

  2986 	smp_mb();