1 files changed, 21 insertions, 0 deletions

diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index e14e964bfe6d..b0fe5272c76a 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -1024,6 +1024,9 @@ static void acpi_device_get_busid(struct acpi_device *device)
         case ACPI_BUS_TYPE_SLEEP_BUTTON:
                 strcpy(device->pnp.bus_id, "SLPF");
                 break;
+        case ACPI_BUS_TYPE_ECDT_EC:
+                strcpy(device->pnp.bus_id, "ECDT");
+                break;
         default:
                 acpi_get_name(device->handle, ACPI_SINGLE_NAME, &buffer);
                 /* Clean up trailing underscores (if any) */
@@ -1304,6 +1307,9 @@ static void acpi_set_pnp_ids(acpi_handle handle, struct acpi_device_pnp *pnp,
         case ACPI_BUS_TYPE_SLEEP_BUTTON:
                 acpi_add_id(pnp, ACPI_BUTTON_HID_SLEEPF);
                 break;
+        case ACPI_BUS_TYPE_ECDT_EC:
+                acpi_add_id(pnp, ACPI_ECDT_HID);
+                break;
         }
 }
 
@@ -2046,6 +2052,21 @@ void acpi_bus_trim(struct acpi_device *adev)
 }
 EXPORT_SYMBOL_GPL(acpi_bus_trim);
 
+int acpi_bus_register_early_device(int type)
+{
+        struct acpi_device *device = NULL;
+        int result;
+
+        result = acpi_add_single_object(&device, NULL,
+                                        type, ACPI_STA_DEFAULT);
+        if (result)
+                return result;
+
+        device->flags.match_driver = true;
+        return device_attach(&device->dev);
+}
+EXPORT_SYMBOL_GPL(acpi_bus_register_early_device);
+
 static int acpi_bus_scan_fixed(void)
 {
         int result = 0;