1 files changed, 10 insertions, 34 deletions

diff --git a/drivers/acpi/pci_slot.c b/drivers/acpi/pci_slot.c
index e50e31a518af..d22585f21aeb 100644
--- a/drivers/acpi/pci_slot.c
+++ b/drivers/acpi/pci_slot.c
@@ -67,8 +67,8 @@ struct acpi_pci_slot {
         struct list_head list;          /* node in the list of slots */
 };
 
-static int acpi_pci_slot_add(acpi_handle handle);
-static void acpi_pci_slot_remove(acpi_handle handle);
+static int acpi_pci_slot_add(struct acpi_pci_root *root);
+static void acpi_pci_slot_remove(struct acpi_pci_root *root);
 
 static LIST_HEAD(slot_list);
 static DEFINE_MUTEX(slot_list_lock);
@@ -233,45 +233,20 @@ out:
 
 /*
  * walk_root_bridge - generic root bridge walker
- * @handle: points to an acpi_pci_root
+ * @root: poiner of an acpi_pci_root
  * @user_function: user callback for slot objects
  *
  * Call user_function for all objects underneath this root bridge.
  * Walk p2p bridges underneath us and call user_function on those too.
  */
 static int
-walk_root_bridge(acpi_handle handle, acpi_walk_callback user_function)
+walk_root_bridge(struct acpi_pci_root *root, acpi_walk_callback user_function)
 {
-        int seg, bus;
-        unsigned long long tmp;
         acpi_status status;
-        acpi_handle dummy_handle;
-        struct pci_bus *pci_bus;
+        acpi_handle handle = root->device->handle;
+        struct pci_bus *pci_bus = root->bus;
         struct callback_args context;
 
-        /* If the bridge doesn't have _STA, we assume it is always there */
-        status = acpi_get_handle(handle, "_STA", &dummy_handle);
-        if (ACPI_SUCCESS(status)) {
-                status = acpi_evaluate_integer(handle, "_STA", NULL, &tmp);
-                if (ACPI_FAILURE(status)) {
-                        info("%s: _STA evaluation failure\n", __func__);
-                        return 0;
-                }
-                if ((tmp & ACPI_STA_DEVICE_FUNCTIONING) == 0)
-                        /* don't register this object */
-                        return 0;
-        }
-
-        status = acpi_evaluate_integer(handle, "_SEG", NULL, &tmp);
-        seg = ACPI_SUCCESS(status) ? tmp : 0;
-
-        status = acpi_evaluate_integer(handle, "_BBN", NULL, &tmp);
-        bus = ACPI_SUCCESS(status) ? tmp : 0;
-
-        pci_bus = pci_find_bus(seg, bus);
-        if (!pci_bus)
-                return 0;
-
         context.pci_bus = pci_bus;
         context.user_function = user_function;
         context.root_handle = handle;
@@ -295,11 +270,11 @@ walk_root_bridge(acpi_handle handle, acpi_walk_callback user_function)
  * @handle: points to an acpi_pci_root
  */
 static int
-acpi_pci_slot_add(acpi_handle handle)
+acpi_pci_slot_add(struct acpi_pci_root *root)
 {
         acpi_status status;
 
-        status = walk_root_bridge(handle, register_slot);
+        status = walk_root_bridge(root, register_slot);
         if (ACPI_FAILURE(status))
                 err("%s: register_slot failure - %d\n", __func__, status);
 
@@ -311,10 +286,11 @@ acpi_pci_slot_add(acpi_handle handle)
  * @handle: points to an acpi_pci_root
  */
 static void
-acpi_pci_slot_remove(acpi_handle handle)
+acpi_pci_slot_remove(struct acpi_pci_root *root)
 {
         struct acpi_pci_slot *slot, *tmp;
         struct pci_bus *pbus;
+        acpi_handle handle = root->device->handle;
 
         mutex_lock(&slot_list_lock);
         list_for_each_entry_safe(slot, tmp, &slot_list, list) {