[PATCH] e1000: use netif_poll_{enable|disable}

2 use netif_poll_{enable|disable} to synchronize between poll and i/f down/up
Signed-off-by: Mallikarjuna R Chilakala <mallikarjuna.chilakala@intel.com>
Signed-off-by: Ganesh Venkatesan <ganesh.venkatesan@intel.com>
Signed-off-by: John Ronciak <john.ronciak@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>

drivers/net/e1000/e1000_main.c

@@ -308,6 +308,9 @@ e1000_up(struct e1000_adapter *adapter)
 	mod_timer(&adapter->watchdog_timer, jiffies);
 	e1000_irq_enable(adapter);
 
+#ifdef CONFIG_E1000_NAPI
+	netif_poll_enable(netdev);
+#endif
 	return 0;
 }
 
@@ -321,6 +324,10 @@ e1000_down(struct e1000_adapter *adapter)
 	del_timer_sync(&adapter->tx_fifo_stall_timer);
 	del_timer_sync(&adapter->watchdog_timer);
 	del_timer_sync(&adapter->phy_info_timer);
+
+#ifdef CONFIG_E1000_NAPI
+	netif_poll_disable(netdev);
+#endif
 	adapter->link_speed = 0;
 	adapter->link_duplex = 0;
 	netif_carrier_off(netdev);