diff --git a/[refs] b/[refs]
index 85baad3b6ab9..0861e5d6334a 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 7ed28f2ed43ece424ff2fa4dedac7928bb37a23a
+refs/heads/master: 185210cc754754c2504afcef9d1c9cd4b8761a9c
diff --git a/trunk/drivers/acpi/apei/einj.c b/trunk/drivers/acpi/apei/einj.c
index 4ca087dd5f4f..3d3816f6d367 100644
--- a/trunk/drivers/acpi/apei/einj.c
+++ b/trunk/drivers/acpi/apei/einj.c
@@ -238,7 +238,7 @@ static void *einj_get_parameter_address(void)
 			return v5param;
 		}
 	}
-	if (paddrv4) {
+	if (param_extension && paddrv4) {
 		struct einj_parameter *v4param;
 
 		v4param = acpi_os_map_memory(paddrv4, sizeof(*v4param));