Hi Sakamoto-san > >>>> Userspace can get to know the XRUN state by calling some APIs. Then, > >>>> it can recover PCM substream by executing SNDRV_PCM_IOCTL_PREPARE > >>>> ioctl. > >>> > >>> I think we can use snd_pcm_stop_xrun() for this purpose. > >> > >> Right. But beware of locking by this function. Unlike snd_pcm_stop() > >> this function takes the stream lock by itself. > > > > Thanks ! > > I see. I will investigate it. > > The 'lock' is what I mentioned in former message to you: > > Can I stop sound from driver as system error ? > http://mailman.alsa-project.org/pipermail/alsa-devel/2015-December/102010.html Yes, I had asked same question to ML, I'm sorry about that. And, can I confirm about your concern ? I guess you are worrying about dead-lock by stop xrun, but is that correct ? _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
