According to drm_plane_create_zpos_property() function documentation,
all planes zpos range should be set if zpos property is supported.
However, the rcar-du driver didn't set primary plane zpos range. Since
the primary plane's zpos is fixed, set i immutably.
Signed-off-by: Tomohito Esaki <etom@xxxxxxxxxx>
---
drivers/gpu/drm/rcar-du/rcar_du_plane.c | 5 ++++-
drivers/gpu/drm/rcar-du/rcar_du_vsp.c | 5 ++++-
2 files changed, 8 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_plane.c b/drivers/gpu/drm/rcar-du/rcar_du_plane.c
index c6430027169f..9a499be45c45 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_plane.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_plane.c
@@ -785,8 +785,11 @@ int rcar_du_planes_init(struct rcar_du_group *rgrp)
drm_plane_create_alpha_property(&plane->plane);
- if (type == DRM_PLANE_TYPE_PRIMARY)
+ if (type == DRM_PLANE_TYPE_PRIMARY) {
+ drm_plane_create_zpos_immutable_property(&plane->plane,
+ 0);
continue;
+ }
drm_object_attach_property(&plane->plane.base,
rcdu->props.colorkey,
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_vsp.c b/drivers/gpu/drm/rcar-du/rcar_du_vsp.c
index 5e4faf258c31..382b720edc09 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_vsp.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_vsp.c
@@ -392,8 +392,11 @@ int rcar_du_vsp_init(struct rcar_du_vsp *vsp, struct device_node *np,
drm_plane_helper_add(&plane->plane,
&rcar_du_vsp_plane_helper_funcs);
- if (type == DRM_PLANE_TYPE_PRIMARY)
+ if (type == DRM_PLANE_TYPE_PRIMARY) {
+ drm_plane_create_zpos_immutable_property(&plane->plane,
+ 0);
continue;
+ }
drm_plane_create_alpha_property(&plane->plane);
drm_plane_create_zpos_property(&plane->plane, 1, 1,
--
2.17.1
