PCI: add acpi_find_root_bridge_handle
[linux-2.6.git] / include / linux / pci-acpi.h
index 3ba2506..8837928 100644 (file)
@@ -57,6 +57,15 @@ static inline acpi_status pcie_osc_support_set(u32 flags)
 {
        return __pci_osc_support_set(flags, PCI_EXPRESS_ROOT_HID_STRING);
 }
+static inline acpi_handle acpi_find_root_bridge_handle(struct pci_dev *pdev)
+{
+       /* Find root host bridge */
+       while (pdev->bus->self)
+               pdev = pdev->bus->self;
+
+       return acpi_get_pci_rootbridge_handle(pci_domain_nr(pdev->bus),
+                       pdev->bus->number);
+}
 #else
 #if !defined(AE_ERROR)
 typedef u32            acpi_status;
@@ -66,6 +75,8 @@ static inline acpi_status pci_osc_control_set(acpi_handle handle, u32 flags)
 {return AE_ERROR;}
 static inline acpi_status pci_osc_support_set(u32 flags) {return AE_ERROR;} 
 static inline acpi_status pcie_osc_support_set(u32 flags) {return AE_ERROR;}
+static inline acpi_handle acpi_find_root_bridge_handle(struct pci_dev *pdev)
+{ return NULL; }
 #endif
 
 #endif /* _PCI_ACPI_H_ */