[alsa-devel] 'multi' plugin signals POLLOUT but snd_pcm_avail_update() returns 0

Takashi Iwai tiwai at suse.de
Mon Oct 27 09:24:33 CET 2008

At Sat, 25 Oct 2008 17:14:29 +0200,
Lennart Poettering wrote:
> Heya!
> There's a apparently a bug in the 'multi' plugin. When it is used it
> will pretty often signal POLLOUT when used with
> snd_pcm_poll_descriptors_revents() and the subsequent call to
> snd_pcm_update_avail() will still return 0. Doesn't look right to me.

Doesn't look right, indeed.
On which system setup does it happen?
Can you reproduce it via a combination of dummy driver so that I can
test it on my system, too?



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