linux-kernel - [RFC][PATCH 1/10] PCI PM: Fix poweroff and restore callbacks

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Date:	Tue, 30 Dec 2008 23:35:53 +0100
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Len Brown <lenb@...nel.org>
Cc:	Jesse Barnes <jbarnes@...tuousgeek.org>,
	Pavel Machek <pavel@...e.cz>,
	pm list <linux-pm@...ts.linux-foundation.org>,
	Matthew Wilcox <matthew@....cx>,
	"H. Peter Anvin" <hpa@...or.com>,
	LKML <linux-kernel@...r.kernel.org>, Greg KH <greg@...ah.com>,
	Linux PCI <linux-pci@...r.kernel.org>
Subject: [RFC][PATCH 1/10] PCI PM: Fix poweroff and restore callbacks


pci_fixup_device() is called too early in pci_pm_poweroff() and too
late in pci_pm_restore().  Moreover, pci_pm_restore_noirq() calls
pci_fixup_device() twice and in a wrong way.  Fix that.

Signed-off-by: Rafael J. Wysocki <rjw@...k.pl>
---
 drivers/pci/pci-driver.c |   10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

Index: linux-2.6/drivers/pci/pci-driver.c
===================================================================
--- linux-2.6.orig/drivers/pci/pci-driver.c
+++ linux-2.6/drivers/pci/pci-driver.c
@@ -597,8 +597,6 @@ static int pci_pm_poweroff(struct device
 	struct device_driver *drv = dev->driver;
 	int error = 0;
 
-	pci_fixup_device(pci_fixup_suspend, pci_dev);
-
 	if (drv && drv->pm) {
 		if (drv->pm->poweroff) {
 			error = drv->pm->poweroff(dev);
@@ -608,6 +606,8 @@ static int pci_pm_poweroff(struct device
 		error = pci_legacy_suspend(dev, PMSG_HIBERNATE);
 	}
 
+	pci_fixup_device(pci_fixup_suspend, pci_dev);
+
 	return error;
 }
 
@@ -634,6 +634,8 @@ static int pci_pm_restore(struct device 
 	struct device_driver *drv = dev->driver;
 	int error = 0;
 
+	pci_fixup_device(pci_fixup_resume, pci_dev);
+
 	if (drv && drv->pm) {
 		if (drv->pm->restore)
 			error = drv->pm->restore(dev);
@@ -642,7 +644,6 @@ static int pci_pm_restore(struct device 
 	} else {
 		error = pci_default_pm_resume_late(pci_dev);
 	}
-	pci_fixup_device(pci_fixup_resume, pci_dev);
 
 	return error;
 }
@@ -653,7 +654,7 @@ static int pci_pm_restore_noirq(struct d
 	struct device_driver *drv = dev->driver;
 	int error = 0;
 
-	pci_fixup_device(pci_fixup_resume, pci_dev);
+	pci_fixup_device(pci_fixup_resume_early, pci_dev);
 
 	if (drv && drv->pm) {
 		if (drv->pm->restore_noirq)
@@ -663,7 +664,6 @@ static int pci_pm_restore_noirq(struct d
 	} else {
 		pci_default_pm_resume_early(pci_dev);
 	}
-	pci_fixup_device(pci_fixup_resume_early, pci_dev);
 
 	return error;
 }

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