Merge branch 'for-linus' into next

[cascardo/linux.git] / drivers / pci / pci.c

diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index 05a510d..adffc6f 100644 (file)
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -1868,6 +1868,38 @@ bool pci_dev_run_wake(struct pci_dev *dev)
 }
 EXPORT_SYMBOL_GPL(pci_dev_run_wake);
 
+void pci_config_pm_runtime_get(struct pci_dev *pdev)
+{
+       struct device *dev = &pdev->dev;
+       struct device *parent = dev->parent;
+
+       if (parent)
+               pm_runtime_get_sync(parent);
+       pm_runtime_get_noresume(dev);
+       /*
+        * pdev->current_state is set to PCI_D3cold during suspending,
+        * so wait until suspending completes
+        */
+       pm_runtime_barrier(dev);
+       /*
+        * Only need to resume devices in D3cold, because config
+        * registers are still accessible for devices suspended but
+        * not in D3cold.
+        */
+       if (pdev->current_state == PCI_D3cold)
+               pm_runtime_resume(dev);
+}
+
+void pci_config_pm_runtime_put(struct pci_dev *pdev)
+{
+       struct device *dev = &pdev->dev;
+       struct device *parent = dev->parent;
+
+       pm_runtime_put(dev);
+       if (parent)
+               pm_runtime_put_sync(parent);
+}
+
 /**
  * pci_pm_init - Initialize PM functions of given PCI device
  * @dev: PCI device to handle.