drm/syncobj: disable the timeline UAPI for now v2

Until we have sorted out all problems.

v2: return -EINVAL during create if flag is set.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/260937/

drivers/gpu/drm/drm_syncobj.c

@@ -483,6 +483,10 @@ int drm_syncobj_create(struct drm_syncobj **out_syncobj, uint32_t flags,
 	int ret;
 	struct drm_syncobj *syncobj;
 
+	/* Disabled for now */
+	if (flags & DRM_SYNCOBJ_CREATE_TYPE_TIMELINE)
+		return -EINVAL;
+
 	syncobj = kzalloc(sizeof(struct drm_syncobj), GFP_KERNEL);
 	if (!syncobj)
 		return -ENOMEM;