[alsa-devel] [PATCH v2 5/6] sound/usb: pcm changes to use media token api

[Devin Heitmueller]

> Sorry, I'm not convinced by that.  If the device has to be controlled
> exclusively, the right position is the open/close.  Otherwise, the
> program cannot know when it becomes inaccessible out of sudden during
> its operation.

I can say that I've definitely seen cases where if you configure a
device as the "default" capture device in PulseAudio, then pulse will
continue to capture from it even if you're not actively capturing the
audio from pulse.  I only spotted this because I had a USB analyzer on
the device and was dumbfounded when the ISOC packets kept arriving
even after I had closed VLC.

Devin

-- 
Devin J. Heitmueller - Kernel Labs
http://www.kernellabs.com