[alsa-devel] snd_pcm_drain and lockups

Hello

Users of the PortAudio library on top of ALSA-lib have reported that it may hang in a call to snd_pcm_drain. I have also been able to confirm that this can happen in conjunction with the dmix device at least. Can the ALSA developers please tell me how, if at all, snd_pcm_drain may be safely used? Is this function simply best avoided (snd_pcm_drop being the alternative)?

Thanks, Arve Knudsen