linux-kernel - [PATCH 2/4] um: Add netpoll support

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Date:	Tue, 28 Jun 2011 00:15:29 +0200
From:	Richard Weinberger <richard@....at>
To:	akpm@...ux-foundation.org
Cc:	linux-kernel@...r.kernel.org,
	user-mode-linux-devel@...ts.sourceforge.net,
	Richard Weinberger <richard@....at>
Subject: [PATCH 2/4] um: Add netpoll support

To make netconsole usable on UML, it's ethernet driver
needs netpoll support.

Signed-off-by: Richard Weinberger <richard@....at>
---
 arch/um/drivers/net_kern.c |   12 ++++++++++++
 1 files changed, 12 insertions(+), 0 deletions(-)

diff --git a/arch/um/drivers/net_kern.c b/arch/um/drivers/net_kern.c
index 47d0c37..22745b4 100644
--- a/arch/um/drivers/net_kern.c
+++ b/arch/um/drivers/net_kern.c
@@ -262,6 +262,15 @@ static int uml_net_change_mtu(struct net_device *dev, int new_mtu)
 	return 0;
 }
 
+#ifdef CONFIG_NET_POLL_CONTROLLER
+static void uml_net_poll_controller(struct net_device *dev)
+{
+	disable_irq(dev->irq);
+	uml_net_interrupt(dev->irq, dev);
+	enable_irq(dev->irq);
+}
+#endif
+
 static void uml_net_get_drvinfo(struct net_device *dev,
 				struct ethtool_drvinfo *info)
 {
@@ -364,6 +373,9 @@ static const struct net_device_ops uml_netdev_ops = {
 	.ndo_set_mac_address	= eth_mac_addr,
 	.ndo_change_mtu 	= uml_net_change_mtu,
 	.ndo_validate_addr	= eth_validate_addr,
+#ifdef CONFIG_NET_POLL_CONTROLLER
+	.ndo_poll_controller = uml_net_poll_controller,
+#endif
 };
 
 /*
-- 
1.7.5.4

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