pci_wake_from_d3 — enable/disable device to wake up from D3_hot or D3_cold


int pci_wake_from_d3 (struct pci_dev * dev,
 bool enable);


struct pci_dev * dev

PCI device to prepare

bool enable

True to enable wake-up event generation; false to disable


Many drivers want the device to wake up the system from D3_hot or D3_cold and this function allows them to set that up cleanly - pci_enable_wake should not be called twice in a row to enable wake-up due to PCI PM vs ACPI ordering constraints.

This function only returns error code if the device is not capable of generating PME# from both D3_hot and D3_cold, and the platform is unable to enable wake-up power for it.