ACPI, APEI, EINJ, limit the range of einj_param

[deliverable/linux.git] / drivers / acpi / apei / einj.c

diff --git a/drivers/acpi/apei/einj.c b/drivers/acpi/apei/einj.c
index 4ca087dd5f4fceb797e1272912b06f082af7549d..3d3816f6d367207294d28fbb5a58b9220267f34a 100644 (file)
--- a/drivers/acpi/apei/einj.c
+++ b/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));