Add two reasons of returning 0 value to the description of the pci_set_power_state to include the cases when: - the transition is to D1 or D2 but D1 and D2 are not supported - the transition is to D3 but D3 is not supported. Signed-off-by: Piotr Gregor <piotrgregor@xxxxxxxxxxx> --- drivers/pci/pci.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index af0cc34..9528781 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -892,7 +892,9 @@ EXPORT_SYMBOL_GPL(__pci_complete_power_transition); * -EINVAL if the requested state is invalid. * -EIO if device does not support PCI PM or its PM capabilities register has a * wrong version, or device doesn't support the requested state. + * 0 if the transition is to D1 or D2 but D1 and D2 are not supported. * 0 if device already is in the requested state. + * 0 if the transition is to D3 but D3 is not supported. * 0 if device's power state has been successfully changed. */ int pci_set_power_state(struct pci_dev *dev, pci_power_t state) -- 2.1.4
