diff options
Diffstat (limited to 'drivers/gpu/drm/drm_plane.c')
| -rw-r--r-- | drivers/gpu/drm/drm_plane.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_plane.c b/drivers/gpu/drm/drm_plane.c index d6ad60ab0d38..4af173ced327 100644 --- a/drivers/gpu/drm/drm_plane.c +++ b/drivers/gpu/drm/drm_plane.c @@ -289,6 +289,8 @@ EXPORT_SYMBOL(drm_universal_plane_init); int drm_plane_register_all(struct drm_device *dev) { + unsigned int num_planes = 0; + unsigned int num_zpos = 0; struct drm_plane *plane; int ret = 0; @@ -297,8 +299,15 @@ int drm_plane_register_all(struct drm_device *dev) ret = plane->funcs->late_register(plane); if (ret) return ret; + + if (plane->zpos_property) + num_zpos++; + num_planes++; } + drm_WARN(dev, num_zpos && num_planes != num_zpos, + "Mixing planes with and without zpos property is invalid\n"); + return 0; } |