[PATCH AUTOSEL 6.12 067/107] drm/amd/display: Fix underflow when playing 8K video in full screen mode

[Sasha Levin]

From: Leo Ma <hanghong.ma@xxxxxxx>

[ 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@xxxxxxx>
Signed-off-by: Leo Ma <hanghong.ma@xxxxxxx>
Signed-off-by: Dillon Varone <dillon.varone@xxxxxxx>
Signed-off-by: Tom Chung <chiahsuan.chung@xxxxxxx>
Tested-by: Daniel Wheeler <daniel.wheeler@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 .../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 8697eac1e1f7e..6c9e1a10911e2 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
@@ -859,7 +859,7 @@ 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