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drm/radeon/kms: fix shared ddc handling

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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: Alex Deucher <alexdeucher@gmail.com>
Cc: stable@kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Alex Deucher 2010-07-01 10:34:56 -04:00 committed by Dave Airlie
parent 5870a4d97d
commit b2ea4aa67b
1 changed files with 3 additions and 1 deletions
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4
drivers/gpu/drm/radeon/radeon_connectors.c
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@ -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);