Connectors with a shared ddc line can be connected to different
encoders.
Reported by Pasi Kärkkäinen <pasik@xxxxxx> on dri-devel
Signed-off-by: Alex Deucher <alexdeucher@xxxxxxxxx>
Cc: stable@xxxxxxxxxx
---
drivers/gpu/drm/radeon/radeon_connectors.c | 4 +++-
1 files changed, 3 insertions(+), 1 deletions(-)
diff --git a/drivers/gpu/drm/radeon/radeon_connectors.c b/drivers/gpu/drm/radeon/radeon_connectors.c
index 0c7ccc6..f58f8bd 100644
--- a/drivers/gpu/drm/radeon/radeon_connectors.c
+++ b/drivers/gpu/drm/radeon/radeon_connectors.c
@@ -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);
--
1.7.0.1
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