From: Alex Hung <alex.hung@xxxxxxxxxxxxx>
This patch has been added to the stable tree. If you have any
objections, please let us know.
===============
[ Upstream commit e34fbbac669de0b7fb7803929d0477f35f6e2833 ]
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@xxxxxxxxxxxxx>
Reviewed-by: Aaron Lu <aaron.lu@xxxxxxxxx>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxxxx>
---
drivers/acpi/video.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c
index cc79d3fedfb2..493811b895bd 100644
--- a/drivers/acpi/video.c
+++ b/drivers/acpi/video.c
@@ -1276,6 +1276,9 @@ 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"));
--
2.11.0