struct acpi_object_list input;
        union acpi_object in_params[4];
        union acpi_object *out_obj;
-       u8 uuid[16];
+       guid_t guid;
        u32 errors;
        struct acpi_buffer output = {ACPI_ALLOCATE_BUFFER, NULL};
 
        if (!context)
                return AE_ERROR;
-       if (ACPI_FAILURE(acpi_str_to_uuid(context->uuid_str, uuid)))
+       if (guid_parse(context->uuid_str, &guid))
                return AE_ERROR;
        context->ret.length = ACPI_ALLOCATE_BUFFER;
        context->ret.pointer = NULL;
        input.pointer = in_params;
        in_params[0].type               = ACPI_TYPE_BUFFER;
        in_params[0].buffer.length      = 16;
-       in_params[0].buffer.pointer     = uuid;
+       in_params[0].buffer.pointer     = (u8 *)&guid;
        in_params[1].type               = ACPI_TYPE_INTEGER;
        in_params[1].integer.value      = context->rev;
        in_params[2].type               = ACPI_TYPE_INTEGER;