diff options
Diffstat (limited to 'drivers/pci/pci.c')
| -rw-r--r-- | drivers/pci/pci.c | 37 |
1 files changed, 34 insertions, 3 deletions
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index 485cfa9af2e..adffc6f621e 100644 --- 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. @@ -3843,14 +3875,13 @@ static void __devinit pci_no_domains(void) } /** - * pci_ext_cfg_enabled - can we access extended PCI config space? - * @dev: The PCI device of the root bridge. + * pci_ext_cfg_avail - can we access extended PCI config space? * * Returns 1 if we can access PCI extended config space (offsets * greater than 0xff). This is the default implementation. Architecture * implementations can override this. */ -int __weak pci_ext_cfg_avail(struct pci_dev *dev) +int __weak pci_ext_cfg_avail(void) { return 1; } |