net: Netconsole poll support for 3c509

diff -urNX /home/mb/dontdiff linux-2.6.10-rc2-mm2.orig/drivers/net/3c509.c linux-2.6.10-rc2-mm2/drivers/net/3c509.c
@@ -209,6 +209,9 @@
 #if defined(CONFIG_EISA) || defined(CONFIG_MCA)
 static int el3_device_remove (struct device *device);
 #endif
+#ifdef CONFIG_NET_POLL_CONTROLLER
+static void el3_poll_controller(struct net_device *dev);
+#endif
 
 #ifdef CONFIG_EISA
 struct eisa_device_id el3_eisa_ids[] = {

@@ -321,6 +324,9 @@
 	dev->set_multicast_list = &set_multicast_list;
 	dev->tx_timeout = el3_tx_timeout;
 	dev->watchdog_timeo = TX_TIMEOUT;
+#ifdef CONFIG_NET_POLL_CONTROLLER
+	dev->poll_controller = el3_poll_controller;
+#endif
 	SET_ETHTOOL_OPS(dev, &ethtool_ops);
 
 	err = register_netdev(dev);

@@ -999,6 +1005,19 @@
 }
 
 
+#ifdef CONFIG_NET_POLL_CONTROLLER
+/*
+ * Polling receive - used by netconsole and other diagnostic tools
+ * to allow network i/o with interrupts disabled.
+ */
+static void el3_poll_controller(struct net_device *dev)
+{
+	disable_irq(dev->irq);
+	el3_interrupt(dev->irq, dev, NULL);
+	enable_irq(dev->irq);
+}
+#endif
+
 static struct net_device_stats *
 el3_get_stats(struct net_device *dev)
 {