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PCI/PM: Clear state_saved during suspend

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This patch clears pci_dev->state_saved at the beginning of suspending.
PCI config state may be saved long before that.  Some drivers call
pci_save_state() from the ->probe() callback to get snapshot of sane
configuration space to use in the ->slot_reset() callback.

Signed-off-by: Konstantin Khlebnikov <khlebnikov@openvz.org> # add comment
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
This commit is contained in:
Rafael J. Wysocki 2013-02-04 15:56:05 +04:00 committed by Bjorn Helgaas
parent cc7ba39bab
commit 82fee4d67a
1 changed files with 4 additions and 0 deletions
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4
drivers/pci/pci-driver.c
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@ -628,6 +628,7 @@ static int pci_pm_suspend(struct device *dev)
goto Fixup;
}
pci_dev->state_saved = false;
if (pm->suspend) {
pci_power_t prev = pci_dev->current_state;
int error;
@ -774,6 +775,7 @@ static int pci_pm_freeze(struct device *dev)
return 0;
}
pci_dev->state_saved = false;
if (pm->freeze) {
int error;
@ -862,6 +864,7 @@ static int pci_pm_poweroff(struct device *dev)
goto Fixup;
}
pci_dev->state_saved = false;
if (pm->poweroff) {
int error;
@ -987,6 +990,7 @@ static int pci_pm_runtime_suspend(struct device *dev)
if (!pm || !pm->runtime_suspend)
return -ENOSYS;
pci_dev->state_saved = false;
pci_dev->no_d3cold = false;
error = pm->runtime_suspend(dev);
suspend_report_result(pm->runtime_suspend, error);