The patch below does not apply to the 5.13-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to stable@vger.kernel.org.

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From e7d9560aeae51415f6c9bc343feb783a441ff4c5 Mon Sep 17 00:00:00 2001

From: Rodrigo Siqueira Rodrigo.Siqueira@amd.com Date: Wed, 16 Jun 2021 12:21:30 -0400 Subject: [PATCH] Revert "drm/amd/display: Fix overlay validation by considering cursors"

This reverts commit 33f409e60eb0c59a4d0d06a62ab4642a988e17f7.

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@amd.com Cc: Harry Wentland Harry.Wentland@amd.com Cc: Hersen Wu hersenxs.wu@amd.com Cc: Sean Paul seanpaul@chromium.org Cc: Mark Yacoub markyacoub@chromium.org Cc: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Rodrigo Siqueira Rodrigo.Siqueira@amd.com Reviewed-by: Sean Paul seanpaul@chromium.org Reviewed-by: Harry Wentland harry.wentland@amd.com Signed-off-by: Alex Deucher alexander.deucher@amd.com Cc: stable@vger.kernel.org

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 2688a2e759de..cfb2f9e43661 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -10120,8 +10120,8 @@ 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) { @@ -10151,14 +10151,6 @@ 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 ||