[PATCH] Revert "drm/amd/display: Fix overlay validation by considering cursors"

[Rodrigo Siqueira]

This reverts commit 04cc17a951f73f9a9092ca572b063e6292aeb085.

The patch that we are reverting here was originally applied because it
fixes multiple IGT issues and flickering in Android. However, after a
discussion with Sean Paul and Mark, it looks like that this patch might
cause problems on ChromeOS. For this reason, we decided to revert this
patch.

Cc: Nicholas Kazlauskas <Nicholas.Kazlauskas at amd.com>
Cc: Harry Wentland <Harry.Wentland at amd.com>
Cc: Hersen Wu <hersenxs.wu at amd.com>
Cc: Sean Paul <seanpaul at chromium.org>
Cc: Mark Yacoub <markyacoub at chromium.org>
Cc: Greg Kroah-Hartman <gregkh at linuxfoundation.org>
Signed-off-by: Rodrigo Siqueira <Rodrigo.Siqueira at amd.com>
---
 drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 12 ++----------
 1 file changed, 2 insertions(+), 10 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 8358112b5822..3fd41e098c90 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -10200,8 +10200,8 @@ static int validate_overlay(struct drm_atomic_state *state)
 {
 	int i;
 	struct drm_plane *plane;
-	struct drm_plane_state *new_plane_state;
-	struct drm_plane_state *primary_state, *cursor_state, *overlay_state = NULL;
+	struct drm_plane_state *old_plane_state, *new_plane_state;
+	struct drm_plane_state *primary_state, *overlay_state = NULL;
 
 	/* Check if primary plane is contained inside overlay */
 	for_each_new_plane_in_state_reverse(state, plane, new_plane_state, i) {
@@ -10231,14 +10231,6 @@ static int validate_overlay(struct drm_atomic_state *state)
 	if (!primary_state->crtc)
 		return 0;
 
-	/* check if cursor plane is enabled */
-	cursor_state = drm_atomic_get_plane_state(state, overlay_state->crtc->cursor);
-	if (IS_ERR(cursor_state))
-		return PTR_ERR(cursor_state);
-
-	if (drm_atomic_plane_disabling(plane->state, cursor_state))
-		return 0;
-
 	/* Perform the bounds check to ensure the overlay plane covers the primary */
 	if (primary_state->crtc_x < overlay_state->crtc_x ||
 	    primary_state->crtc_y < overlay_state->crtc_y ||
-- 
2.25.1