1 files changed, 23 insertions, 7 deletions

diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index eb7a1ff224e7..1870223cb1a3 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -474,8 +474,8 @@ static int acpi_generic_hotplug_event(struct acpi_device *adev, u32 type)
                         dev_info(&adev->dev, "Eject disabled\n");
                         return -EPERM;
                 }
-                acpi_evaluate_hotplug_ost(adev->handle, ACPI_NOTIFY_EJECT_REQUEST,
-                                          ACPI_OST_SC_EJECT_IN_PROGRESS, NULL);
+                acpi_evaluate_ost(adev->handle, ACPI_NOTIFY_EJECT_REQUEST,
+                                  ACPI_OST_SC_EJECT_IN_PROGRESS, NULL);
                 return acpi_scan_hot_remove(adev);
         }
         return -EINVAL;
@@ -524,7 +524,7 @@ void acpi_device_hotplug(struct acpi_device *adev, u32 src)
                 ost_code = ACPI_OST_SC_SUCCESS;
 
  err_out:
-        acpi_evaluate_hotplug_ost(adev->handle, src, ost_code, NULL);
+        acpi_evaluate_ost(adev->handle, src, ost_code, NULL);
 
  out:
         acpi_bus_put_acpi_device(adev);
@@ -583,8 +583,8 @@ acpi_eject_store(struct device *d, struct device_attribute *attr,
                 return count;
 
         put_device(&acpi_device->dev);
-        acpi_evaluate_hotplug_ost(acpi_device->handle, ACPI_OST_EC_OSPM_EJECT,
-                                  ACPI_OST_SC_NON_SPECIFIC_FAILURE, NULL);
+        acpi_evaluate_ost(acpi_device->handle, ACPI_OST_EC_OSPM_EJECT,
+                          ACPI_OST_SC_NON_SPECIFIC_FAILURE, NULL);
         return status == AE_NO_MEMORY ? -ENOMEM : -EAGAIN;
 }
 
@@ -1757,6 +1757,20 @@ static bool acpi_ibm_smbus_match(acpi_handle handle)
         return false;
 }
 
+static bool acpi_object_is_system_bus(acpi_handle handle)
+{
+        acpi_handle tmp;
+
+        if (ACPI_SUCCESS(acpi_get_handle(NULL, "\\_SB", &tmp)) &&
+            tmp == handle)
+                return true;
+        if (ACPI_SUCCESS(acpi_get_handle(NULL, "\\_TZ", &tmp)) &&
+            tmp == handle)
+                return true;
+
+        return false;
+}
+
 static void acpi_set_pnp_ids(acpi_handle handle, struct acpi_device_pnp *pnp,
                                 int device_type)
 {
@@ -1808,8 +1822,10 @@ static void acpi_set_pnp_ids(acpi_handle handle, struct acpi_device_pnp *pnp,
                         acpi_add_id(pnp, ACPI_DOCK_HID);
                 else if (acpi_ibm_smbus_match(handle))
                         acpi_add_id(pnp, ACPI_SMBUS_IBM_HID);
-                else if (list_empty(&pnp->ids) && handle == ACPI_ROOT_OBJECT) {
-                        acpi_add_id(pnp, ACPI_BUS_HID); /* \_SB, LNXSYBUS */
+                else if (list_empty(&pnp->ids) &&
+                         acpi_object_is_system_bus(handle)) {
+                        /* \_SB, \_TZ, LNXSYBUS */
+                        acpi_add_id(pnp, ACPI_BUS_HID);
                         strcpy(pnp->device_name, ACPI_BUS_DEVICE_NAME);
                         strcpy(pnp->device_class, ACPI_BUS_CLASS);
                 }