From: Dmitry Osipenko <digetx@gmail.com>
Date: Thu, 15 Mar 2018 04:00:24 +0300
Subject: drm/tegra: plane: Correct legacy blending
Git-commit: 48519232bea9230d1c5dbbb680d9257d4861bb4c
Patch-mainline: v4.16-rc7
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166
Keep old 'dependent' state of unaffected planes, this way new state takes
into account current state of unaffected planes.
Fixes: ebae8d07435a ("drm/tegra: dc: Implement legacy blending")
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
drivers/gpu/drm/tegra/plane.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
--- a/drivers/gpu/drm/tegra/plane.c
+++ b/drivers/gpu/drm/tegra/plane.c
@@ -334,9 +334,6 @@ void tegra_plane_check_dependent(struct
unsigned int zpos[2];
unsigned int i;
- for (i = 0; i < 3; i++)
- state->dependent[i] = false;
-
for (i = 0; i < 2; i++)
zpos[i] = 0;
@@ -350,6 +347,8 @@ void tegra_plane_check_dependent(struct
index = tegra_plane_get_overlap_index(tegra, p);
+ state->dependent[index] = false;
+
/*
* If any of the other planes is on top of this plane and uses
* a format with an alpha component, mark this plane as being