Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit b2ea4aa6 authored by Alex Deucher's avatar Alex Deucher Committed by Dave Airlie
Browse files

drm/radeon/kms: fix shared ddc handling 



Connectors with a shared ddc line can be connected to different
encoders.

Reported by Pasi Kärkkäinen <pasik@iki.fi> on dri-devel

Signed-off-by: default avatarAlex Deucher <alexdeucher@gmail.com>
Cc: stable@kernel.org
Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
parent 5870a4d9

drivers/gpu/drm/radeon/radeon_connectors.c

+3 −1
Original line number Diff line number Diff line
@@ -785,7 +785,9 @@ static enum drm_connector_status radeon_dvi_detect(struct drm_connector *connect 
					if (connector == list_connector)

						continue;

					list_radeon_connector = to_radeon_connector(list_connector);

					if (radeon_connector->devices == list_radeon_connector->devices) {

					if (list_radeon_connector->shared_ddc &&

					    (list_radeon_connector->ddc_bus->rec.i2c_id ==

					     radeon_connector->ddc_bus->rec.i2c_id)) {

						if (drm_detect_hdmi_monitor(radeon_connector->edid)) {

							if (connector->connector_type == DRM_MODE_CONNECTOR_DVID) {

								kfree(radeon_connector->edid);