[PATCH] net: netconsole support for smc91x

Signed-off-by: Hayato Fujiwara <fujiwara@linux-m32r.org>
Signed-off-by: Hirokazu Takata <takata@linux-m32r.org>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>

drivers/net/smc91x.c

@@ -1333,6 +1333,19 @@ static irqreturn_t smc_interrupt(int irq, void *dev_id, struct pt_regs *regs)
 	return IRQ_HANDLED;
 }
 
+#ifdef CONFIG_NET_POLL_CONTROLLER
+/*
+ * Polling receive - used by netconsole and other diagnostic tools
+ * to allow network i/o with interrupts disabled.
+ */
+static void smc_poll_controller(struct net_device *dev)
+{
+	disable_irq(dev->irq);
+	smc_interrupt(dev->irq, dev, NULL);
+	enable_irq(dev->irq);
+}
+#endif
+
 /* Our watchdog timed out. Called by the networking layer */
 static void smc_timeout(struct net_device *dev)
 {
@@ -1912,6 +1925,9 @@ static int __init smc_probe(struct net_device *dev, unsigned long ioaddr)
 	dev->get_stats = smc_query_statistics;
 	dev->set_multicast_list = smc_set_multicast_list;
 	dev->ethtool_ops = &smc_ethtool_ops;
+#ifdef CONFIG_NET_POLL_CONTROLLER
+	dev->poll_controller = smc_poll_controller;
+#endif
 
 	tasklet_init(&lp->tx_task, smc_hardware_send_pkt, (unsigned long)dev);
 	INIT_WORK(&lp->phy_configure, smc_phy_configure, dev);