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Subject[PATCH v2 4/7] PCI/PM: clear state_saved during suspend
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From: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

This patch clears pci_dev->state_saved at the beginnig of suspending.
PCI config state may be saved long before that. Some divers calls
pci_save_state() from its ->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
Cc: linux-pci@vger.kernel.org
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
---
drivers/pci/pci-driver.c | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/drivers/pci/pci-driver.c b/drivers/pci/pci-driver.c
index dc5bdce..f9aa311 100644
--- a/drivers/pci/pci-driver.c
+++ b/drivers/pci/pci-driver.c
@@ -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);


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