PCI: add acpi_find_root_bridge_handle

Consolidate finding of a root bridge and getting its handle to the one
inline function. It's cut & pasted on multiple places. Use this new
inline in those.

Cc: kristen.c.accardi@intel.com
Acked-by: Alex Chiang <achiang@hp.com>
Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>

1 files changed, 1 insertions, 4 deletions

diff --git a/drivers/pci/hotplug/acpi_pcihp.c b/drivers/pci/hotplug/acpi_pcihp.c
index bd831970f00b..e17ef54f0efc 100644
--- a/drivers/pci/hotplug/acpi_pcihp.c
+++ b/drivers/pci/hotplug/acpi_pcihp.c
@@ -404,10 +404,7 @@ int acpi_get_hp_hw_control_from_firmware(struct pci_dev *dev, u32 flags)
          * OSHP within the scope of the hotplug controller and its parents,
          * upto the host bridge under which this controller exists.
          */
-        while (pdev->bus->self)
-                pdev = pdev->bus->self;
-        handle = acpi_get_pci_rootbridge_handle(pci_domain_nr(pdev->bus),
-                        pdev->bus->number);
+        handle = acpi_find_root_bridge_handle(pdev);
         if (handle) {
                 acpi_get_name(handle, ACPI_FULL_PATHNAME, &string);
                 dbg("Trying to get hotplug control for %s\n",