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ACPI/PCI: call _OSC support during root bridge discovery

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Add pci_acpi_osc_support() and call it when a PCI bridge is added.  This
allows us to avoid having every individual PCI root bridge driver call
_OSC support for every root bridge in their probe functions, a
significant savings in boot time.

Signed-off-by: Matthew Wilcox <[email protected]>
Signed-off-by: Jesse Barnes <[email protected]>
This commit is contained in:
Andrew Patterson 2008-11-10 15:30:45 -07:00 • committed by Jesse Barnes
commit 990a7ac564
3 changed files with 29 additions and 5 deletions
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1
include/linux/pci-acpi.h
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@ -51,6 +51,7 @@
#ifdef CONFIG_ACPI
extern acpi_status pci_osc_control_set(acpi_handle handle, u32 flags);
extern acpi_status __pci_osc_support_set(u32 flags, const char *hid);
int pci_acpi_osc_support(acpi_handle handle, u32 flags);
static inline acpi_status pci_osc_support_set(u32 flags)
{
return __pci_osc_support_set(flags, PCI_ROOT_HID_STRING);