Re: Suspend regression, hang after matroxfb

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On Friday 30 January 2009, Rafael J. Wysocki wrote:
> On Friday 30 January 2009, Eric Sesterhenn wrote:
> > * Rafael J. Wysocki (rjw@xxxxxxx) wrote:
> > > On Thursday 29 January 2009, Eric Sesterhenn wrote:
> > > > hi,
> > > > 
> > > > on this box standby worked with 2.6.28, but is broken with 2.6.29-rc3.
> > > > 
> > > > Dmesg of startup
> > > > http://www.cccmz.de/~snakebyte/200.log
> > > > .config
> > > > http://www.cccmz.de/~snakebyte/config_200
> > > > 
> > > > When testing the devices 
> > > > 
> > > > root@computer-desktop:/sys/power# echo devices > pm_test 
> > > 
> > > What happens if you replace 'devices' with 'core' ?
> > 
> > no change, it hangs after matroxfb
> > 
> > root@computer-desktop:/sys/power# echo core > pm_test 
> > root@computer-desktop:/sys/power# echo standby > state
> > 
> [--snip--]
> > 
> > > If the same, what happens without the matroxfb driver?
> > 
> > It gets a bit further, suspend seems to complete,
> > but hangs during resume
> 
> Please check if the appended patch helps.

Sorry, wrong version.

Please try this one instead.

Thanks,
Rafael

---
 drivers/pci/pci-driver.c |    8 ++++----
 1 file changed, 4 insertions(+), 4 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
@@ -443,11 +443,11 @@ static void pci_pm_default_suspend_gener
 	pci_save_state(pci_dev);
 }
 
-static void pci_pm_default_suspend(struct pci_dev *pci_dev)
+static void pci_pm_default_suspend(struct pci_dev *pci_dev, bool prepare)
 {
 	pci_pm_default_suspend_generic(pci_dev);
 
-	if (!pci_is_bridge(pci_dev))
+	if (prepare && !pci_is_bridge(pci_dev))
 		pci_prepare_to_sleep(pci_dev);
 
 	pci_fixup_device(pci_fixup_suspend, pci_dev);
@@ -507,7 +507,7 @@ static int pci_pm_suspend(struct device 
 	}
 
 	if (!error)
-		pci_pm_default_suspend(pci_dev);
+		pci_pm_default_suspend(pci_dev, drv && drv->pm);
 
 	return error;
 }
@@ -666,7 +666,7 @@ static int pci_pm_poweroff(struct device
 	}
 
 	if (!error)
-		pci_pm_default_suspend(pci_dev);
+		pci_pm_default_suspend(pci_dev, drv && drv->pm);
 
 	return error;
 }

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