From c25b498fcae220bb1bfd8052520b18158e9ea8d6 Mon Sep 17 00:00:00 2001
From: Brian King <brking@linux.vnet.ibm.com>
Date: Fri, 7 May 2010 08:56:08 +0000
Subject: [PATCH] ibmveth: Add suspend/resume support

Adds support for resuming from suspend for IBM virtual ethernet devices.
We may have lost an interrupt over the suspend, so we just kick the
interrupt handler to process anything that is outstanding.

Signed-off-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 drivers/net/ibmveth.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/drivers/net/ibmveth.c b/drivers/net/ibmveth.c
index 3e4dead5a2f44..941be84deb670 100644
--- a/drivers/net/ibmveth.c
+++ b/drivers/net/ibmveth.c
@@ -45,6 +45,7 @@
 #include <linux/init.h>
 #include <linux/delay.h>
 #include <linux/mm.h>
+#include <linux/pm.h>
 #include <linux/ethtool.h>
 #include <linux/proc_fs.h>
 #include <linux/in.h>
@@ -1588,6 +1589,12 @@ static struct kobj_type ktype_veth_pool = {
 	.default_attrs  = veth_pool_attrs,
 };
 
+static int ibmveth_resume(struct device *dev)
+{
+	struct net_device *netdev = dev_get_drvdata(dev);
+	ibmveth_interrupt(netdev->irq, netdev);
+	return 0;
+}
 
 static struct vio_device_id ibmveth_device_table[] __devinitdata= {
 	{ "network", "IBM,l-lan"},
@@ -1595,6 +1602,10 @@ static struct vio_device_id ibmveth_device_table[] __devinitdata= {
 };
 MODULE_DEVICE_TABLE(vio, ibmveth_device_table);
 
+static struct dev_pm_ops ibmveth_pm_ops = {
+	.resume = ibmveth_resume
+};
+
 static struct vio_driver ibmveth_driver = {
 	.id_table	= ibmveth_device_table,
 	.probe		= ibmveth_probe,
@@ -1603,6 +1614,7 @@ static struct vio_driver ibmveth_driver = {
 	.driver		= {
 		.name	= ibmveth_driver_name,
 		.owner	= THIS_MODULE,
+		.pm = &ibmveth_pm_ops,
 	}
 };
 
-- 
2.39.5