[alsa-devel] [PATCH - IOPLUG DRAIN 0/2]

Hi Takashi,

Why not poll()?

IOW, why ioplug must be handled specially regarding the non-blocking operation? The normal kernel driver behaves like that (returning -EAGAIN, and let apps to sync with poll()).

What do you think about the following solution?

(I thought the whole time that you have to use snd_pcm_wait() to wait for drain in nonblocking mode but you have to use the poll_descriptors directly.)

Know I am expecting that the user is calling poll() if snd_pcm_drain() returns -EAGAIN and the user has to call snd_pcm_drain() again after poll returns to check if drain is done.

Thanks for your help so far.

Best regards

Timo