[PATCH 1/2] drm/amd/display: Cleanup MST non-atomic code workaround

[Jerry (Fangzhi) Zuo]

[why]
It is not correct to touch aconnector within atomic_check.

[How]
It was added as workaround before, and no longer needed.

Signed-off-by: Jerry (Fangzhi) Zuo <Jerry.Zuo at amd.com>
---
 drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c  | 15 +++-------
 .../amd/display/amdgpu_dm/amdgpu_dm_mst_types.c    | 34 ----------------------
 .../amd/display/amdgpu_dm/amdgpu_dm_mst_types.h    |  1 -
 3 files changed, 4 insertions(+), 46 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index f8ec8a146663..6c2441bfce90 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -2760,18 +2760,11 @@ create_stream_for_sink(struct amdgpu_dm_connector *aconnector,
 	drm_connector = &aconnector->base;
 
 	if (!aconnector->dc_sink) {
-		/*
-		 * Create dc_sink when necessary to MST
-		 * Don't apply fake_sink to MST
-		 */
-		if (aconnector->mst_port) {
-			dm_dp_mst_dc_sink_create(drm_connector);
-			return stream;
+		if (!aconnector->mst_port) {
+			sink = create_fake_sink(aconnector);
+			if (!sink)
+				return stream;
 		}
-
-		sink = create_fake_sink(aconnector);
-		if (!sink)
-			return stream;
 	} else {
 		sink = aconnector->dc_sink;
 	}
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 67683645ce2c..744d97cc0d39 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
@@ -205,40 +205,6 @@ static const struct drm_connector_funcs dm_dp_mst_connector_funcs = {
 	.atomic_get_property = amdgpu_dm_connector_atomic_get_property
 };
 
-void dm_dp_mst_dc_sink_create(struct drm_connector *connector)
-{
-	struct amdgpu_dm_connector *aconnector = to_amdgpu_dm_connector(connector);
-	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;
-
-	ASSERT(aconnector->edid);
-
-	dc_sink = dc_link_add_remote_sink(
-		aconnector->dc_link,
-		(uint8_t *)aconnector->edid,
-		(aconnector->edid->extensions + 1) * EDID_LENGTH,
-		&init_params);
-
-	dc_sink->priv = aconnector;
-	aconnector->dc_sink = dc_sink;
-
-	if (aconnector->dc_sink)
-		amdgpu_dm_update_freesync_caps(
-				connector, aconnector->edid);
-}
-
 static int dm_dp_mst_get_modes(struct drm_connector *connector)
 {
 	struct amdgpu_dm_connector *aconnector = to_amdgpu_dm_connector(connector);
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.h b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.h
index 8cf51da26657..2da851b40042 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.h
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.h
@@ -31,6 +31,5 @@ struct amdgpu_dm_connector;
 
 void amdgpu_dm_initialize_dp_connector(struct amdgpu_display_manager *dm,
 				       struct amdgpu_dm_connector *aconnector);
-void dm_dp_mst_dc_sink_create(struct drm_connector *connector);
 
 #endif
-- 
2.14.1