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drm/amdgpu: only set DP subconnector type on DP and eDP connectors

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Fixes a crash in drm_object_property_set_value() because the property
is not set for internal DP ports that connect to a bridge chips
(e.g., DP to VGA or DP to LVDS).

Bug: https://bugzilla.kernel.org/show_bug.cgi?id=210739
Fixes: 65bf2cf95d ("drm/amdgpu: utilize subconnector property for DP through atombios")
Tested-By: Kris Karas <bugs-a17@moonlit-rail.com>
Cc: Oleg Vasilev <oleg.vasilev@intel.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org # 5.10.x
This commit is contained in:
Alex Deucher 2020-12-17 12:11:36 -05:00
parent e75a9db3c5
commit 05211e7fbb
1 changed files with 6 additions and 4 deletions
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10
drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c
View file

@ -1414,10 +1414,12 @@ amdgpu_connector_dp_detect(struct drm_connector *connector, bool force)
pm_runtime_put_autosuspend(connector->dev->dev);
}
drm_dp_set_subconnector_property(&amdgpu_connector->base,
ret,
amdgpu_dig_connector->dpcd,
amdgpu_dig_connector->downstream_ports);
if (connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort ||
connector->connector_type == DRM_MODE_CONNECTOR_eDP)
drm_dp_set_subconnector_property(&amdgpu_connector->base,
ret,
amdgpu_dig_connector->dpcd,
amdgpu_dig_connector->downstream_ports);
return ret;
}