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Diffstat (limited to 'drivers/pci/pci-driver.c')
| -rw-r--r-- | drivers/pci/pci-driver.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/pci/pci-driver.c b/drivers/pci/pci-driver.c index a5f11ad975b2..8395206d1aee 100644 --- a/drivers/pci/pci-driver.c +++ b/drivers/pci/pci-driver.c @@ -423,6 +423,23 @@ static int pci_legacy_resume(struct device *dev) /* Auxiliary functions used by the new power management framework */ +/** + * pci_restore_standard_config - restore standard config registers of PCI device + * @pci_dev: PCI device to handle + */ +static int pci_restore_standard_config(struct pci_dev *pci_dev) +{ + pci_update_current_state(pci_dev, PCI_UNKNOWN); + + if (pci_dev->current_state != PCI_D0) { + int error = pci_set_power_state(pci_dev, PCI_D0); + if (error) + return error; + } + + return pci_dev->state_saved ? pci_restore_state(pci_dev) : 0; +} + static void pci_pm_default_resume_noirq(struct pci_dev *pci_dev) { pci_restore_standard_config(pci_dev); |