drm/amd/display: Fix underflow when playing 8K video in full screen mode

[ 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@amd.com>
Signed-off-by: Leo Ma <hanghong.ma@amd.com>
Signed-off-by: Dillon Varone <dillon.varone@amd.com>
Signed-off-by: Tom Chung <chiahsuan.chung@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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 4d6cf856cc96cca67dd47adedeb8a872141ba692..8dee0d397e0322872c01e7b46e5989fcce4b1c31 100644 (file)
--- 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
@@ -882,7 +882,7 @@ 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;
 }