nouveau_fence_new
ret = nouveau_fence_new(pfence, chan);
ret = nouveau_fence_new(&fence, chan);
ret = nouveau_fence_new(&fence, chan);
nouveau_fence_new(&fence, dmem->migrate.chan);
nouveau_fence_new(&fence, chunk->drm->dmem->migrate.chan);
nouveau_fence_new(&fence, drm->dmem->migrate.chan);
int nouveau_fence_new(struct nouveau_fence **, struct nouveau_channel *);
ret = nouveau_fence_new(&fence, chan);