diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index 8bb48bf..ec12d97 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -487,7 +487,9 @@
 	if (adev->handle == INVALID_ACPI_HANDLE)
 		goto err_out;
 
-	if (adev->flags.hotplug_notify) {
+	if (adev->flags.is_dock_station) {
+		error = dock_notify(adev, src);
+	} else if (adev->flags.hotplug_notify) {
 		error = acpi_generic_hotplug_event(adev, src);
 		if (error == -EPERM) {
 			ost_code = ACPI_OST_SC_EJECT_NOT_SUPPORTED;
@@ -1660,6 +1662,29 @@
 	return acpi_ata_match(phandle);
 }
 
+bool acpi_device_is_battery(acpi_handle handle)
+{
+	struct acpi_device_info *info;
+	bool ret = false;
+
+	if (!ACPI_SUCCESS(acpi_get_object_info(handle, &info)))
+		return false;
+
+	if (info->valid & ACPI_VALID_HID)
+		ret = !strcmp("PNP0C0A", info->hardware_id.string);
+
+	kfree(info);
+	return ret;
+}
+
+static bool is_ejectable_bay(acpi_handle handle)
+{
+	if (acpi_has_method(handle, "_EJ0") && acpi_device_is_battery(handle))
+		return true;
+
+	return acpi_bay_match(handle);
+}
+
 /*
  * acpi_dock_match - see if an acpi object has a _DCK method
  */
@@ -1964,6 +1989,10 @@
 {
 	struct acpi_hardware_id *hwid;
 
+	if (acpi_dock_match(adev->handle) || is_ejectable_bay(adev->handle)) {
+		acpi_dock_add(adev);
+		return;
+	}
 	list_for_each_entry(hwid, &adev->pnp.ids, list) {
 		struct acpi_scan_handler *handler;
 
@@ -2035,8 +2064,12 @@
 static void acpi_bus_attach(struct acpi_device *device)
 {
 	struct acpi_device *child;
+	acpi_handle ejd;
 	int ret;
 
+	if (ACPI_SUCCESS(acpi_bus_get_ejd(device->handle, &ejd)))
+		register_dock_dependent_device(device, ejd);
+
 	acpi_bus_get_status(device);
 	/* Skip devices that are not present. */
 	if (!acpi_device_is_present(device)) {
@@ -2189,7 +2222,6 @@
 	acpi_cmos_rtc_init();
 	acpi_container_init();
 	acpi_memory_hotplug_init();
-	acpi_dock_init();
 
 	mutex_lock(&acpi_scan_lock);
 	/*