[PATCH] drm/tegra: dc: cap non-cursor plane zpos to 254

[Emmanuel Gil Peyrot]

Since cursor plane has the immutable zpos 255, other planes can’t take
its place so we can cap them to 254 instead.

Thanks emersion!

Signed-off-by: Emmanuel Gil Peyrot <linkma...@linkmauve.fr>
---
 drivers/gpu/drm/tegra/dc.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/tegra/dc.c b/drivers/gpu/drm/tegra/dc.c
index 6e78416e64b0..e9a416fb4db7 100644
--- a/drivers/gpu/drm/tegra/dc.c
+++ b/drivers/gpu/drm/tegra/dc.c
@@ -838,7 +838,7 @@ static struct drm_plane *tegra_primary_plane_create(struct 
drm_device *drm,
        }
 
        drm_plane_helper_add(&plane->base, &tegra_plane_helper_funcs);
-       drm_plane_create_zpos_property(&plane->base, plane->index, 0, 255);
+       drm_plane_create_zpos_property(&plane->base, plane->index, 0, 254);
 
        err = drm_plane_create_rotation_property(&plane->base,
                                                 DRM_MODE_ROTATE_0,
@@ -1292,7 +1292,7 @@ static struct drm_plane 
*tegra_dc_overlay_plane_create(struct drm_device *drm,
        }
 
        drm_plane_helper_add(&plane->base, &tegra_plane_helper_funcs);
-       drm_plane_create_zpos_property(&plane->base, plane->index, 0, 255);
+       drm_plane_create_zpos_property(&plane->base, plane->index, 0, 254);
 
        err = drm_plane_create_rotation_property(&plane->base,
                                                 DRM_MODE_ROTATE_0,
-- 
2.40.1