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| author | Piotr Gregor <piotrgregor@rsyncme.org> | 2017-08-02 21:42:18 +0200 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2017-08-04 01:12:56 +0200 |
| commit | ab4b8a47abeefad94cdb6b4c0df6a13f4f6ae4e0 (patch) | |
| tree | 23d50d4c8bcaabd69e0d93d57342eec8bfa6def7 /drivers/pci | |
| parent | Linux 4.13-rc3 (diff) | |
| download | linux-ab4b8a47abeefad94cdb6b4c0df6a13f4f6ae4e0.tar.xz linux-ab4b8a47abeefad94cdb6b4c0df6a13f4f6ae4e0.zip | |
PCI/PM: Expand description of pci_set_power_state()
Add two reasons for returning 0 value to the description of
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@rsyncme.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'drivers/pci')
| -rw-r--r-- | drivers/pci/pci.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index af0cc3456dc1..9528781db4d3 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) |