linux-kernel - [PATCH] PCI PM: Make pci_prepare_to_sleep() disable wake-up if needed

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Date:	Sat, 28 Mar 2009 22:26:15 +0100
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Jesse Barnes <jbarnes@...tuousgeek.org>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Linux PCI <linux-pci@...r.kernel.org>,
	pm list <linux-pm@...ts.linux-foundation.org>
Subject: [PATCH] PCI PM: Make pci_prepare_to_sleep() disable wake-up if needed

From: Rafael J. Wysocki <rjw@...k.pl>

If the device is not supposed to wake up the system, ie. when
device_may_wakeup(&dev->dev) returns 'false', pci_prepare_to_sleep()
should pass 'false' to pci_enable_wake() so that it calls the
platform to disable the wake-up capability of the device.

Signed-off-by: Rafael J. Wysocki <rjw@...k.pl>
---
 drivers/pci/pci.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Index: linux-2.6/drivers/pci/pci.c
===================================================================
--- linux-2.6.orig/drivers/pci/pci.c
+++ linux-2.6/drivers/pci/pci.c
@@ -1268,7 +1268,7 @@ int pci_prepare_to_sleep(struct pci_dev 
 	if (target_state == PCI_POWER_ERROR)
 		return -EIO;
 
-	pci_enable_wake(dev, target_state, true);
+	pci_enable_wake(dev, target_state, device_may_wakeup(&dev->dev));
 
 	error = pci_set_power_state(dev, target_state);
 
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