[alsa-devel] usx2y: usx2yhwdeppcm.c gives "should not be here with counts=40" (linux 4.9.0)

Hi all.

I'm running a fresh and cleanly-installed debian testing (stretch) with my tascam us-122. After about 6 hours of perfect, joyous sound, the kernel (4.9.0-2-686) emits:

should not be here with counts=40

and my jack server stops working. I'm aware that I should be running a vanilla kernel before logging a bug against the driver - is that my next step? (it might take a very long time!)

(FWIW, I've run alsa-info.sh and the results are available at http://www.alsa-project.org/db/?f=f5e0f8f654ef467cedaaed7ae129b02267c46a95)

Many thanks, Jaime