[PATCH] Add polling support to Sungem

[Colin Leroy <colin@colino.net>]

[sending again, forgot Cc:, sorry]

Hi Benjamin!

This patch adds polling support to Sungem ethernet card. It makes
netconsole usable on iBook G4, for example.
I hope it's fine.

Signed-off-by: Colin Leroy <colin@colino.net>

--- a/drivers/net/sungem.c	2004-09-29 12:22:41.802346664 +0200
+++ b/drivers/net/sungem.c	2004-09-29 12:15:56.000000000 +0200
@@ -2687,6 +2687,23 @@
 }
 #endif /* not Sparc and not PPC */
 
+#ifdef CONFIG_NET_POLL_CONTROLLER
+/*
+ * Polling 'interrupt' - used by things like netconsole to send skbs
+ * without having to re-enable interrupts. It's not called while
+ * the interrupt routine is executing.
+ */
+static void gem_netpoll(struct net_device *netdev)
+{
+	struct gem *gp = netdev->priv;
+	if (!gp->pdev)
+		return;
+	disable_irq(gp->pdev->irq);
+	gem_interrupt(gp->pdev->irq, netdev, NULL);
+	enable_irq(gp->pdev->irq);
+}
+#endif
+
 static int __devinit gem_get_device_address(struct gem *gp)
 {
 #if defined(__sparc__) || defined(CONFIG_PPC_PMAC)
@@ -2882,6 +2899,9 @@
 	dev->set_multicast_list = gem_set_multicast;
 	dev->do_ioctl = gem_ioctl;
 	dev->poll = gem_poll;
+#ifdef CONFIG_NET_POLL_CONTROLLER
+	dev->poll_controller = gem_netpoll;
+#endif
 	dev->weight = 64;
 	dev->ethtool_ops = &gem_ethtool_ops;
 	dev->tx_timeout = gem_tx_timeout;