ACPI: dock driver

[powerpc.git] / drivers / acpi / scan.c

diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index a7b1fda..401e723 100644 (file)
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -663,6 +663,29 @@ static int acpi_bus_find_driver(struct acpi_device *device)
                                  Device Enumeration
    -------------------------------------------------------------------------- */
 
+acpi_status
+acpi_bus_get_ejd(acpi_handle handle, acpi_handle *ejd)
+{
+       acpi_status status;
+       acpi_handle tmp;
+       struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL};
+       union acpi_object *obj;
+
+       status = acpi_get_handle(handle, "_EJD", &tmp);
+       if (ACPI_FAILURE(status))
+               return status;
+
+       status = acpi_evaluate_object(handle, "_EJD", NULL, &buffer);
+       if (ACPI_SUCCESS(status)) {
+               obj = buffer.pointer;
+               status = acpi_get_handle(NULL, obj->string.pointer, ejd);
+               kfree(buffer.pointer);
+       }
+       return status;
+}
+EXPORT_SYMBOL_GPL(acpi_bus_get_ejd);
+
+
 static int acpi_bus_get_flags(struct acpi_device *device)
 {
        acpi_status status = AE_OK;