drm_syncobj_get_fd
r = drm_syncobj_get_fd(syncobj, (int *)&info->out.handle);
EXPORT_SYMBOL(drm_syncobj_get_fd);
ret = drm_syncobj_get_fd(syncobj, p_fd);
int drm_syncobj_get_fd(struct drm_syncobj *syncobj, int *p_fd);