Hi, On Thu, 11 Feb 2021, Takashi Iwai wrote: > Some users reported the kernel WARNING with stack traces from > hdmi_pcm_close(), and it's the line checking the per_cvt->assigned > flag. This used to be a valid check in the past because the flag was > turned on/off only at opening and closing a PCM stream. Meanwhile, > since the introduction of the silent-stream mode, this flag may be > turned on/off at the monitor connection/disconnection time, which ack, this needs to be removed: Reviewed-by: Kai Vehmanen <kai.vehmanen@xxxxxxxxxxxxxxx> Br, Kai