nvkm_disp_chan_new_
return nvkm_disp_chan_new_(disp, disp->wndw.nr, oclass, argv, argc, pobject);
return nvkm_disp_chan_new_(disp, disp->head.nr, oclass, argv, argc, pobject);
return nvkm_disp_chan_new_(disp, 1, oclass, argv, argc, pobject);