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| author | Bjorn Helgaas <bhelgaas@google.com> | 2013-04-17 16:57:56 -0600 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2013-04-23 09:50:30 -0600 |
| commit | 703860ed4e36ded696bd44af6107243fdedfb746 (patch) | |
| tree | eb5bd366144a03639ac8ae229c571381a1c98e96 /include/linux/pci.h | |
| parent | 99369065970e9ea7d1ca489341ed29d1a72ec0b5 (diff) | |
| download | lwn-703860ed4e36ded696bd44af6107243fdedfb746.tar.gz lwn-703860ed4e36ded696bd44af6107243fdedfb746.zip | |
PCI: Use u8, not int, for PM capability offset
The Power Management Capability (PCI_CAP_ID_PM == 0x01) is defined by PCI
and must appear in the 256-byte PCI Configuration Space from 0-0xff. It
cannot be in the PCIe Extended Configuration space from 0x100-0xfff, so
we only need a u8 to hold its offset.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'include/linux/pci.h')
| -rw-r--r-- | include/linux/pci.h | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/include/linux/pci.h b/include/linux/pci.h index 2461033a7987..9587d4d19279 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -249,8 +249,7 @@ struct pci_dev { pci_power_t current_state; /* Current operating state. In ACPI-speak, this is D0-D3, D0 being fully functional, and D3 being off. */ - int pm_cap; /* PM capability offset in the - configuration space */ + u8 pm_cap; /* PM capability offset */ unsigned int pme_support:5; /* Bitmask of states from which PME# can be generated */ unsigned int pme_interrupt:1; |