Commit 962c66c7 authored by Alex Hung's avatar Alex Hung Committed by Greg Kroah-Hartman

ACPI / video: skip evaluating _DOD when it does not exist

commit e34fbbac upstream.

Some system supports hybrid graphics and its discrete VGA
does not have any connectors and therefore has no _DOD method.
Signed-off-by: default avatarAlex Hung <alex.hung@canonical.com>
Reviewed-by: default avatarAaron Lu <aaron.lu@intel.com>
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 12e1a3cd
......@@ -1211,6 +1211,9 @@ static int acpi_video_device_enumerate(struct acpi_video_bus *video)
union acpi_object *dod = NULL;
union acpi_object *obj;
if (!video->cap._DOD)
return AE_NOT_EXIST;
status = acpi_evaluate_object(video->device->handle, "_DOD", NULL, &buffer);
if (!ACPI_SUCCESS(status)) {
ACPI_EXCEPTION((AE_INFO, status, "Evaluating _DOD"));
......
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