drm/tegra: plane: Correct legacy blending

Keep old 'dependent' state of unaffected planes, this way new state takes into account current state of unaffected planes. Fixes: ebae8d0 ("drm/tegra: dc: Implement legacy blending") Signed-off-by: Dmitry Osipenko <[email protected]> Signed-off-by: Thierry Reding <[email protected]>
thoughtpolice · Mar 15, 2018 · 4851923 · 4851923
1 parent 8a927d6
commit 4851923
Showing 1 changed file with 2 additions and 3 deletions.
diff --git a/drivers/gpu/drm/tegra/plane.c b/drivers/gpu/drm/tegra/plane.c
@@ -334,9 +334,6 @@ void tegra_plane_check_dependent(struct tegra_plane *tegra,
 	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 tegra_plane *tegra,
 
 		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