From: Alex Deucher Date: Thu, 17 Dec 2020 17:11:36 +0000 (-0500) Subject: drm/amdgpu: only set DP subconnector type on DP and eDP connectors X-Git-Tag: baikal/mips/sdk5.9~11886^2^2~2 X-Git-Url: https://git.baikalelectronics.ru/sdk/?a=commitdiff_plain;h=3c85c8d1f8c0e4daf348b249173131ad7c620f9a;p=kernel.git drm/amdgpu: only set DP subconnector type on DP and eDP connectors 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: 493419249e285a ("drm/amdgpu: utilize subconnector property for DP through atombios") Tested-By: Kris Karas Cc: Oleg Vasilev Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org # 5.10.x --- diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c index 65d1b23d7e746..b9c11c2b2885a 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c @@ -1414,10 +1414,12 @@ out: 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; }