diff --git a/py/stream.c b/py/stream.c index 0fb57118c6..9bd086558f 100644 --- a/py/stream.c +++ b/py/stream.c @@ -416,11 +416,10 @@ STATIC mp_obj_t stream_ioctl(size_t n_args, const mp_obj_t *args) { mp_buffer_info_t bufinfo; uintptr_t val = 0; if (n_args > 2) { - if (MP_OBJ_IS_INT(args[2])) { - val = mp_obj_get_int(args[2]); - } else { - mp_get_buffer_raise(args[2], &bufinfo, MP_BUFFER_WRITE); + if (mp_get_buffer(args[2], &bufinfo, MP_BUFFER_WRITE)) { val = (uintptr_t)bufinfo.buf; + } else { + val = mp_obj_get_int_truncated(args[2]); } }