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authorBjorn Helgaas <bhelgaas@google.com>2017-09-07 13:24:18 -0500
committerBjorn Helgaas <bhelgaas@google.com>2017-09-07 13:24:18 -0500
commitd872694bac212f76ca13fd20a85e5c1bdb53a945 (patch)
tree2fe88f1eab062c8b5f5fd00656657566078cee26 /drivers/pci/pci.c
parent79ab592c700e969d32770dcd1ae39ac64c328812 (diff)
parentab4b8a47abeefad94cdb6b4c0df6a13f4f6ae4e0 (diff)
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Merge branch 'pci/pm' into next
* pci/pm: PCI/PM: Expand description of pci_set_power_state()
Diffstat (limited to 'drivers/pci/pci.c')
-rw-r--r--drivers/pci/pci.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index 90d070ec1026..2870cd36e3e0 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -893,7 +893,9 @@ 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)