[PATCH] Revert "drm/amd/display: Match actual state during S3 resume."

[Rex.Zhu@xxxxxxx (Rex Zhu)]

This reverts commit 7ae4acd21e9e264afb079e23d43bcf2238c7dbea.

fix s3 hang issue.

Change-Id: Iefb61cf8072b83146d867961b22f13ad83ab0106
Signed-off-by: Rex Zhu <Rex.Zhu at amd.com>
---
 drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 38 -----------------------
 1 file changed, 38 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 58e29a2..4501140 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -649,11 +649,6 @@ int amdgpu_dm_display_resume(struct amdgpu_device *adev)
 	struct drm_connector *connector;
 	struct drm_crtc *crtc;
 	struct drm_crtc_state *crtc_state;
-	struct dm_crtc_state *dm_crtc_state;
-	struct drm_plane *plane;
-	struct drm_plane_state *plane_state;
-	struct dm_plane_state *dm_plane_state;
-	struct dm_atomic_state *cached_state;
 	int ret = 0;
 	int i;
 
@@ -687,43 +682,10 @@ int amdgpu_dm_display_resume(struct amdgpu_device *adev)
 		amdgpu_dm_update_connector_after_detect(aconnector);
 		mutex_unlock(&aconnector->hpd_lock);
 	}
-
 	/* Force mode set in atomic comit */
 	for_each_crtc_in_state(adev->dm.cached_state, crtc, crtc_state, i)
 			crtc_state->active_changed = true;
 
-	cached_state = to_dm_atomic_state(adev->dm.cached_state);
-
-	/*
-	 * During suspend, the cached state is saved before all streams are
-	 * disabled. Refresh cached state to match actual current state before
-	 * restoring it.
-	 */
-	WARN_ON(kref_read(&cached_state->context->refcount) > 1);
-	dc_release_state(cached_state->context);
-
-	cached_state->context = dc_create_state();
-	ASSERT(cached_state->context);
-	dc_resource_state_copy_construct_current(adev->dm.dc, cached_state->context);
-
-	for_each_new_crtc_in_state(adev->dm.cached_state, crtc, crtc_state, i) {
-		dm_crtc_state = to_dm_crtc_state(crtc_state);
-		if (dm_crtc_state->stream) {
-			WARN_ON(kref_read(&dm_crtc_state->stream->refcount) > 1);
-			dc_stream_release(dm_crtc_state->stream);
-			dm_crtc_state->stream = NULL;
-		}
-	}
-
-	for_each_new_plane_in_state(adev->dm.cached_state, plane, plane_state, i) {
-		dm_plane_state = to_dm_plane_state(plane_state);
-		if (dm_plane_state->dc_state) {
-			WARN_ON(kref_read(&dm_plane_state->dc_state->refcount) > 1);
-			dc_plane_state_release(dm_plane_state->dc_state);
-			dm_plane_state->dc_state = NULL;
-		}
-	}
-
 	ret = drm_atomic_helper_resume(ddev, adev->dm.cached_state);
 
 	drm_atomic_state_put(adev->dm.cached_state);
-- 
1.9.1