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Commit 703860ed authored by Bjorn Helgaas's avatar Bjorn Helgaas
Browse files

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: default avatarBjorn Helgaas <bhelgaas@google.com>
Acked-by: default avatarRafael 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;