leandrof/linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

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

Browse Source 
Some system supports hybrid graphics and its discrete VGA
does not have any connectors and therefore has no _DOD method.

Signed-off-by: Alex Hung <alex.hung@canonical.com>
Reviewed-by: Aaron Lu <aaron.lu@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Alex Hung 2016-05-27 15:47:06 +08:00 committed by Rafael J. Wysocki
parent 007d94ca8b
commit e34fbbac66
1 changed files with 3 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/acpi/acpi_video.c
View File

@ -1246,6 +1246,9 @@ 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"));