1 files changed, 16 insertions, 0 deletions

diff --git a/drivers/pci/pci-driver.c b/drivers/pci/pci-driver.c
index 9de07b75b993..4884c4840b3d 100644
--- a/drivers/pci/pci-driver.c
+++ b/drivers/pci/pci-driver.c
@@ -370,6 +370,7 @@ static int pci_legacy_suspend(struct device *dev, pm_message_t state)
         }
 
         pci_save_state(pci_dev);
+        pci_dev->state_saved = true;
         /*
          * This is for compatibility with existing code with legacy PM support.
          */
@@ -419,6 +420,7 @@ static int pci_legacy_resume(struct device *dev)
 static void pci_pm_default_resume_noirq(struct pci_dev *pci_dev)
 {
         pci_restore_standard_config(pci_dev);
+        pci_dev->state_saved = false;
         pci_fixup_device(pci_fixup_resume_early, pci_dev);
 }
 
@@ -555,6 +557,13 @@ static int pci_pm_resume(struct device *dev)
         struct device_driver *drv = dev->driver;
         int error = 0;
 
+        /*
+         * This is necessary for the suspend error path in which resume is
+         * called without restoring the standard config registers of the device.
+         */
+        if (pci_dev->state_saved)
+                pci_restore_standard_config(pci_dev);
+
         if (pci_has_legacy_pm_support(pci_dev))
                 return pci_legacy_resume(dev);
 
@@ -710,6 +719,13 @@ static int pci_pm_restore(struct device *dev)
         struct device_driver *drv = dev->driver;
         int error = 0;
 
+        /*
+         * This is necessary for the hibernation error path in which restore is
+         * called without restoring the standard config registers of the device.
+         */
+        if (pci_dev->state_saved)
+                pci_restore_standard_config(pci_dev);
+
         if (pci_has_legacy_pm_support(pci_dev))
                 return pci_legacy_resume(dev);