linux-kernel - Re: [PATCH 2/4] setup wake-on-lan before shutting down

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Message-ID: <20080518130236.GB21417@yamamaya.is-a-geek.org>
Date:	Sun, 18 May 2008 15:02:37 +0200
From:	Tobias Diedrich <ranma+kernel@...edrich.de>
To:	netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	Ayaz Abdulla <aabdulla@...dia.com>,
	"Rafael J. Wysocki" <rjw@...k.pl>,
	Stephen Hemminger <shemminger@...ux-foundation.org>
Subject: Re: [PATCH 2/4] setup wake-on-lan before shutting down

From: Tobias Diedrich <ranma+kernel@...edrich.de>

When hibernating in 'shutdown' mode, after saving the image the suspend hook
is not called again.
However, if the device is in promiscous mode, wake-on-lan will not work.
This adds a shutdown hook to setup wake-on-lan before the final shutdown.

Signed-off-by: Tobias Diedrich <ranma+kernel@...edrich.de>

Index: linux-2.6.26-rc2.forcedwol/drivers/net/forcedeth.c
===================================================================
--- linux-2.6.26-rc2.forcedwol.orig/drivers/net/forcedeth.c	2008-05-18 13:53:02.000000000 +0200
+++ linux-2.6.26-rc2.forcedwol/drivers/net/forcedeth.c	2008-05-18 13:53:06.000000000 +0200
@@ -5827,8 +5827,23 @@
 out:
 	return rc;
 }
+
+static void nv_shutdown(struct pci_dev *pdev)
+{
+	struct net_device *dev = pci_get_drvdata(pdev);
+	struct fe_priv *np = netdev_priv(dev);
+
+	if (netif_running(dev))
+		nv_close(dev);
+
+	pci_enable_wake(pdev, PCI_D3hot, np->wolenabled);
+	pci_enable_wake(pdev, PCI_D3cold, np->wolenabled);
+	pci_disable_device(pdev);
+	pci_set_power_state(pdev, PCI_D3hot);
+}
 #else
 #define nv_suspend NULL
+#define nv_shutdown NULL
 #define nv_resume NULL
 #endif /* CONFIG_PM */
 
@@ -5999,6 +6014,7 @@
 	.remove		= __devexit_p(nv_remove),
 	.suspend	= nv_suspend,
 	.resume		= nv_resume,
+	.shutdown	= nv_shutdown,
 };
 
 static int __init init_nic(void)
--
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