linux-kernel - [PATCH AUTOSEL 6.11 53/87] drm/amd/display: Fix underflow when playing 8K video in full screen mode

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Message-ID: <20241124134102.3344326-53-sashal@kernel.org>
Date: Sun, 24 Nov 2024 08:38:31 -0500
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org,
	stable@...r.kernel.org
Cc: Leo Ma <hanghong.ma@....com>,
	Alvin Lee <alvin.lee2@....com>,
	Dillon Varone <dillon.varone@....com>,
	Tom Chung <chiahsuan.chung@....com>,
	Daniel Wheeler <daniel.wheeler@....com>,
	Alex Deucher <alexander.deucher@....com>,
	Sasha Levin <sashal@...nel.org>,
	chaitanya.dhere@....com,
	jun.lei@....com,
	harry.wentland@....com,
	sunpeng.li@....com,
	Rodrigo.Siqueira@....com,
	christian.koenig@....com,
	Xinhui.Pan@....com,
	airlied@...il.com,
	simona@...ll.ch,
	Alvin.Lee2@....com,
	aurabindo.pillai@....com,
	Samson.Tam@....com,
	alex.hung@....com,
	joshua.aberback@....com,
	amd-gfx@...ts.freedesktop.org,
	dri-devel@...ts.freedesktop.org
Subject: [PATCH AUTOSEL 6.11 53/87] drm/amd/display: Fix underflow when playing 8K video in full screen mode

From: Leo Ma <hanghong.ma@....com>

[ Upstream commit 4007f07a47de4a277f4760cac3aed1b31d973eea ]

[Why&How]
Flickering observed while playing 8k HEVC-10 bit video in full screen
mode with black border. We didn't support this case for subvp.
Make change to the existing check to disable subvp for this corner case.

Reviewed-by: Alvin Lee <alvin.lee2@....com>
Signed-off-by: Leo Ma <hanghong.ma@....com>
Signed-off-by: Dillon Varone <dillon.varone@....com>
Signed-off-by: Tom Chung <chiahsuan.chung@....com>
Tested-by: Daniel Wheeler <daniel.wheeler@....com>
Signed-off-by: Alex Deucher <alexander.deucher@....com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 .../drm/amd/display/dc/dml2/dml21/dml21_translation_helper.c    | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/display/dc/dml2/dml21/dml21_translation_helper.c b/drivers/gpu/drm/amd/display/dc/dml2/dml21/dml21_translation_helper.c
index ef0150a258b12..49d9e4d7b911e 100644
--- a/drivers/gpu/drm/amd/display/dc/dml2/dml21/dml21_translation_helper.c
+++ b/drivers/gpu/drm/amd/display/dc/dml2/dml21/dml21_translation_helper.c
@@ -862,7 +862,7 @@ static void populate_dml21_plane_config_from_plane_state(struct dml2_context *dm
 	plane->immediate_flip = plane_state->flip_immediate;
 
 	plane->composition.rect_out_height_spans_vactive =
-		plane_state->dst_rect.height >= stream->timing.v_addressable &&
+		plane_state->dst_rect.height >= stream->src.height &&
 		stream->dst.height >= stream->timing.v_addressable;
 }
 
-- 
2.43.0