drm: check that planes types are correct while initializing CRTC

Be warned if primary or cursor planes haven't the correct type

Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
index 5785336695ca..111849c4c8c2 100644
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -659,6 +659,9 @@ int drm_crtc_init_with_planes(struct drm_device *dev, struct drm_crtc *crtc,
         struct drm_mode_config *config = &dev->mode_config;
         int ret;
 
+        WARN_ON(primary && primary->type != DRM_PLANE_TYPE_PRIMARY);
+        WARN_ON(cursor && cursor->type != DRM_PLANE_TYPE_CURSOR);
+
         crtc->dev = dev;
         crtc->funcs = funcs;
         crtc->invert_dimensions = false;