net: Add netconsole support to cs89x0 driver

Index: linux-2.6.12-rc4-git8/drivers/net/cs89x0.c
===================================================================
@@ -404,6 +404,19 @@
 	return -1;
 }
 
+#ifdef CONFIG_NET_POLL_CONTROLLER
+/*
+ * Polling receive - used by netconsole and other diagnostic tools
+ * to allow network i/o with interrupts disabled.
+ */
+static void cs89x0_poll_controller(struct net_device *dev)
+{
+	disable_irq(dev->irq);
+	net_interrupt(dev->irq, dev, NULL);
+	enable_irq(dev->irq);
+}
+#endif
+
 /* This is the real probe routine.  Linux has a history of friendly device
    probes on the ISA bus.  A good device probes avoids doing writes, and
    verifies that the correct device exists and functions.

@@ -731,6 +744,9 @@
 	dev->get_stats		= net_get_stats;
 	dev->set_multicast_list = set_multicast_list;
 	dev->set_mac_address 	= set_mac_address;
+#ifdef CONFIG_NET_POLL_CONTROLLER
+	dev->poll_controller	= cs89x0_poll_controller;
+#endif
 
 	printk("\n");
 	if (net_debug)