Commit 703860ed authored Apr 17, 2013 by Bjorn Helgaas

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>

parent 99369065

include/linux/pci.h

+1 −2

Original line number	Diff line number	Diff line
		@@ -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;

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