The dev.pme_support field, pci_pm_init(), and pci_pme_capable() depend on
the fact that the pci_power_t values (PCI_D0, PCI_D1, etc.) match the
definition of the PME_Support field of the Power Management Capabilities
register in the Power Management capability (see PCI Bus Power Management
spec r1.2, sec 3.2.3).
Add a note to this effect at the pci_power_t typedef.
Signed-off-by: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
---
include/linux/pci.h | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/include/linux/pci.h b/include/linux/pci.h
index 8597b42..85cede3 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -101,6 +101,10 @@ enum {
DEVICE_COUNT_RESOURCE = PCI_NUM_RESOURCES,
};
+/*
+ * pci_power_t values must match the bits in the PME_Support field of the
+ * Power Management Capabilities register in the Power Management capability.
+ */
typedef int __bitwise pci_power_t;
#define PCI_D0 ((pci_power_t __force) 0)
--
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