[Patch 4/16 2.5] ixgb: Fix NAPI driver crash on ifdown during traffic

[Ganesh Venkatesan <ganesh.venkatesan@xxxxxxxxx>]

diff -up net-drivers-2.6/drivers/net/ixgb/ixgb_main.c 
net-drivers-2.6/drivers/net/ixgb.new/ixgb_main.c
--- net-drivers-2.6/drivers/net/ixgb/ixgb_main.c        2004-10-05 
15:50:18.000000000 -0700
+++ net-drivers-2.6/drivers/net/ixgb.new/ixgb_main.c    2004-10-05 
17:55:48.000000000 -0700
@@ -1652,6 +1652,7 @@ static irqreturn_t ixgb_intr(int irq, vo
                netif_rx_complete(netdev);
                /* RAIDC will be automatically restarted by irq_enable */
                ixgb_irq_enable(adapter);
+               return 0;
        }
 
        return (work_done >= work_to_do);