[PATCH 40/51] drm/amd/display: Limit NV12 chroma workaround

[sunpeng.li at amd.com]

From: Anthony Koo <Anthony.Koo at amd.com>

[Why]
It is causing green Line at the bottom of SDR 480p
MPO playback

[How]
Limit workaround to vertical > 512

Signed-off-by: Anthony Koo <Anthony.Koo at amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng at amd.com>
Acked-by: Leo Li <sunpeng.li at amd.com>
---
 drivers/gpu/drm/amd/display/dc/dcn21/dcn21_hubp.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_hubp.c b/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_hubp.c
index 38661b9c61f8..332bf3d3a664 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_hubp.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn21/dcn21_hubp.c
@@ -200,7 +200,7 @@ void hubp21_set_viewport(
 	 *	Disable w/a when rotated 180 degrees, causes vertical chroma offset
 	 */
 	patched_viewport_height = viewport_c->height;
-	if (viewport_c->height != 0 && debug->nv12_iflip_vm_wa &&
+	if (debug->nv12_iflip_vm_wa && viewport_c->height > 512 &&
 			rotation != ROTATION_ANGLE_180) {
 		int pte_row_height = 0;
 		int pte_rows = 0;
-- 
2.24.0