diff options
| author | Andrew Patterson <andrew.patterson@hp.com> | 2008-11-10 15:30:45 -0700 |
|---|---|---|
| committer | Jesse Barnes <jbarnes@virtuousgeek.org> | 2009-01-07 11:12:27 -0800 |
| commit | 990a7ac5645883a833a11b900bb6f25b65dea65b (patch) | |
| tree | 8644b7da9b41069d873d2b4dbe600bc5a828347d /drivers/acpi/pci_root.c | |
| parent | 8b62091e20215730be1b94b7cd135a78a3e692ca (diff) | |
| download | lwn-990a7ac5645883a833a11b900bb6f25b65dea65b.tar.gz lwn-990a7ac5645883a833a11b900bb6f25b65dea65b.zip | |
ACPI/PCI: call _OSC support during root bridge discovery
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 <willy@linux.intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Diffstat (limited to 'drivers/acpi/pci_root.c')
| -rw-r--r-- | drivers/acpi/pci_root.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c index 642554b1b60c..de4d57114fe4 100644 --- a/drivers/acpi/pci_root.c +++ b/drivers/acpi/pci_root.c @@ -31,6 +31,7 @@ #include <linux/spinlock.h> #include <linux/pm.h> #include <linux/pci.h> +#include <linux/pci-acpi.h> #include <linux/acpi.h> #include <acpi/acpi_bus.h> #include <acpi/acpi_drivers.h> @@ -193,6 +194,7 @@ static int __devinit acpi_pci_root_add(struct acpi_device *device) unsigned long long value = 0; acpi_handle handle = NULL; struct acpi_device *child; + u32 flags; if (!device) @@ -210,6 +212,13 @@ static int __devinit acpi_pci_root_add(struct acpi_device *device) device->ops.bind = acpi_pci_bind; + /* + * All supported architectures that use ACPI have support for + * PCI domains, so we indicate this in _OSC support capabilities. + */ + flags = OSC_PCI_SEGMENT_GROUPS_SUPPORT; + pci_acpi_osc_support(device->handle, flags); + /* * Segment * ------- |