diff --git a/drivers/acpi/glue.c b/drivers/acpi/glue.c
index c6645f2..4c8fcff 100644
--- a/drivers/acpi/glue.c
+++ b/drivers/acpi/glue.c
@@ -113,7 +113,7 @@
 	if (!parent)
 		return NULL;
 	acpi_walk_namespace(ACPI_TYPE_DEVICE, parent,
-			    1, do_acpi_find_child, &find, NULL);
+			    1, do_acpi_find_child, NULL, &find, NULL);
 	return find.handle;
 }