[PATCH 2.6 2/14] e1000: Fix kernel panic when the interface is brought down while the NAPI enabled driver is under stress

[Ganesh Venkatesan <ganesh.venkatesan@xxxxxxxxx>]

Signed-off-by: Ganesh Venkatesan <ganesh.venkatesan@xxxxxxxxx>
diff -up net-drivers-2.6/drivers/net/e1000/e1000_main.c 
net-drivers-2.6/drivers/net/e1000.new/e1000_main.c
--- net-drivers-2.6/drivers/net/e1000/e1000_main.c      2004-12-03 
07:24:37.090623184 -0800
+++ net-drivers-2.6/drivers/net/e1000.new/e1000_main.c  2004-12-03 
07:24:38.581396552 -0800
@@ -2162,6 +2162,9 @@ e1000_clean(struct net_device *netdev, i
        int tx_cleaned;
        int work_done = 0;
        
+       if (!netif_carrier_ok(netdev))
+               goto quit_polling;
+
        tx_cleaned = e1000_clean_tx_irq(adapter);
        e1000_clean_rx_irq(adapter, &work_done, work_to_do);
 
@@ -2171,7 +2174,7 @@ e1000_clean(struct net_device *netdev, i
        /* if no Rx and Tx cleanup work was done, exit the polling mode */
        if(!tx_cleaned || (work_done < work_to_do) || 
                                !netif_running(netdev)) {
-               netif_rx_complete(netdev);
+quit_polling:  netif_rx_complete(netdev);
                e1000_irq_enable(adapter);
                return 0;
        }