From 22dfbb251e2ea91f478a54109d1e1bee9a8aecec Mon Sep 17 00:00:00 2001 From: Harry Wentland Date: Thu, 8 Mar 2018 22:05:35 -0500 Subject: [PATCH] drm/amd/display: Don't read EDID in atomic_check We shouldn't attempt to read EDID in atomic_check. We really shouldn't even be modifying the connector object, or any other non-state object, but this is a start at least. Moving EDID cleanup to dm_dp_mst_connector_destroy from dm_dp_destroy_mst_connector to ensure the EDID is still available for headless mode. Signed-off-by: Harry Wentland Reviewed-by: Tony Cheng Acked-by: Harry Wentland Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org --- .../display/amdgpu_dm/amdgpu_dm_mst_types.c | 32 ++++++------------- 1 file changed, 10 insertions(+), 22 deletions(-) diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c index 8291d74f26bcf..305292a9ff804 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c @@ -161,6 +161,11 @@ dm_dp_mst_connector_destroy(struct drm_connector *connector) struct amdgpu_dm_connector *amdgpu_dm_connector = to_amdgpu_dm_connector(connector); struct amdgpu_encoder *amdgpu_encoder = amdgpu_dm_connector->mst_encoder; + if (amdgpu_dm_connector->edid) { + kfree(amdgpu_dm_connector->edid); + amdgpu_dm_connector->edid = NULL; + } + drm_encoder_cleanup(&amdgpu_encoder->base); kfree(amdgpu_encoder); drm_connector_cleanup(connector); @@ -181,28 +186,22 @@ static const struct drm_connector_funcs dm_dp_mst_connector_funcs = { void dm_dp_mst_dc_sink_create(struct drm_connector *connector) { struct amdgpu_dm_connector *aconnector = to_amdgpu_dm_connector(connector); - struct edid *edid; struct dc_sink *dc_sink; struct dc_sink_init_data init_params = { .link = aconnector->dc_link, .sink_signal = SIGNAL_TYPE_DISPLAY_PORT_MST }; + /* FIXME none of this is safe. we shouldn't touch aconnector here in + * atomic_check + */ + /* * TODO: Need to further figure out why ddc.algo is NULL while MST port exists */ if (!aconnector->port || !aconnector->port->aux.ddc.algo) return; - edid = drm_dp_mst_get_edid(connector, &aconnector->mst_port->mst_mgr, aconnector->port); - - if (!edid) { - drm_mode_connector_update_edid_property( - &aconnector->base, - NULL); - return; - } - - aconnector->edid = edid; + ASSERT(aconnector->edid); dc_sink = dc_link_add_remote_sink( aconnector->dc_link, @@ -215,9 +214,6 @@ void dm_dp_mst_dc_sink_create(struct drm_connector *connector) amdgpu_dm_add_sink_to_freesync_module( connector, aconnector->edid); - - drm_mode_connector_update_edid_property( - &aconnector->base, aconnector->edid); } static int dm_dp_mst_get_modes(struct drm_connector *connector) @@ -424,14 +420,6 @@ static void dm_dp_destroy_mst_connector(struct drm_dp_mst_topology_mgr *mgr, dc_sink_release(aconnector->dc_sink); aconnector->dc_sink = NULL; } - if (aconnector->edid) { - kfree(aconnector->edid); - aconnector->edid = NULL; - } - - drm_mode_connector_update_edid_property( - &aconnector->base, - NULL); aconnector->mst_connected = false; } -- 2.39.5