From afa983c9915a36083990becb6c7f19abce61bc8f Mon Sep 17 00:00:00 2001
From: juhosg <juhosg@3c298f89-4303-0410-b956-a3cf2f4a3e73>
Date: Sat, 27 Mar 2010 13:05:17 +0000
Subject: ar71xx: ag71xx: Add netpoll support

This patch adds support for polling interrupts, used by
netconsole and the likes.

Tested on d-link dir-615 C1 using netconsole.

Signed-off-by: Pat Erley <pat-lkml@erley.org>


git-svn-id: svn://svn.openwrt.org/openwrt/trunk@20503 3c298f89-4303-0410-b956-a3cf2f4a3e73
---
 .../linux/ar71xx/files/drivers/net/ag71xx/ag71xx_main.c | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

(limited to 'target/linux')

diff --git a/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_main.c b/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_main.c
index 4519ec8dc..824423966 100644
--- a/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_main.c
+++ b/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_main.c
@@ -926,6 +926,20 @@ static void ag71xx_set_multicast_list(struct net_device *dev)
 	/* TODO */
 }
 
+#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 ag71xx_netpoll(struct net_device *dev)
+{
+	disable_irq(dev->irq);
+	ag71xx_interrupt(dev->irq, dev);
+	enable_irq(dev->irq);
+}
+#endif
+
 static const struct net_device_ops ag71xx_netdev_ops = {
 	.ndo_open		= ag71xx_open,
 	.ndo_stop		= ag71xx_stop,
@@ -936,6 +950,9 @@ static const struct net_device_ops ag71xx_netdev_ops = {
 	.ndo_change_mtu		= eth_change_mtu,
 	.ndo_set_mac_address	= eth_mac_addr,
 	.ndo_validate_addr	= eth_validate_addr,
+#ifdef CONFIG_NET_POLL_CONTROLLER
+	.ndo_poll_controller	= ag71xx_netpoll,
+#endif
 };
 
 static int __init ag71xx_probe(struct platform_device *pdev)
-- 
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