Subject: spidernet enable poll() before registering interrupts

From: Arnd Bergmann <arnd.bergmann@de.ibm.com>
We must not call netif_poll_enable after enabling interrupts,
because an interrupt might come in and set the __LINK_STATE_RX_SCHED
bit before we get to clear that bit again. If that happens,
the next call to the ->poll() function will oops.

Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
Index: linux-2.6/drivers/net/spider_net.c
===================================================================
--- linux-2.6.orig/drivers/net/spider_net.c
+++ linux-2.6/drivers/net/spider_net.c
@@ -2030,6 +2030,7 @@ spider_net_open(struct net_device *netde
 	/* further enhancement: setup hw vlan, if needed */
 
 	result = -EBUSY;
+	netif_poll_enable(netdev);
 	if (request_irq(netdev->irq, spider_net_interrupt,
 			     IRQF_SHARED, netdev->name, netdev))
 		goto register_int_failed;
@@ -2038,13 +2039,13 @@ spider_net_open(struct net_device *netde
 
 	netif_start_queue(netdev);
 	netif_carrier_on(netdev);
-	netif_poll_enable(netdev);
 
 	spider_net_enable_interrupts(card);
 
 	return 0;
 
 register_int_failed:
+	netif_poll_enable(netdev);
 	spider_net_free_rx_chain_contents(card);
 alloc_skbs_failed:
 	spider_net_free_chain(card, &card->rx_chain);