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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 <harry.wentland@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
This commit is contained in:
Harry Wentland 2018-03-08 22:05:35 -05:00 committed by Alex Deucher
parent f287765680
commit c7b8de0038
1 changed files with 10 additions and 22 deletions
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32
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
View File

@ -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;
}