Re: [BUG] Roland VS-100 not working, (possible) regression in snd_usb_audio

On Sat, 04 Mar 2023 06:59:19 +0100,
Takashi Iwai wrote:
> =

> On Thu, 23 Feb 2023 14:24:32 +0100,
> Alberto Zin wrote:
> > =

> > =

> > Hello, first post in this list. I'm not sure if this is the right place=
 to
> > fill a bug report.
> > =

> > The issue I encountered is on a Roland VS-100, an hi-end interface simi=
lar to
> > VS-20:
> > =

> > https://www.roland.com/global/products/v-studio_100/
> > =

> > it seems that snd_usb_audio module has broken the compatibility with the
> > VS-100 at around krnel 5.11 time. I have two alsa-info reports, on the =
same
> > desktop pc:
> > =

> > working (my current setup):
> > http://alsa-project.org/db/?f=3Da3378ecb0a258b4745827c693f4c0045fdb83847
> > =

> > non working (live):
> > http://alsa-project.org/db/?f=3D99bcdd5a60281110a93317d09a11b9f4831f970=
1=A0
> > =

> > in the non working case the interface is recognised by "lsusb", it is s=
een by
> > "aconnect -l" but not by "aplay -l".
> > =

> > I'm willing to solve the issue and to help to the best of my possibilit=
ies (if
> > needed also by recompiling the kernel)
> =

> What exactly is "broken"?  Please elaborate that part.
> The probe of the VS-100 itself seems working with the new kernel, too,
> so cannot judge without much detailed contexts.

OK, I see now the bugzilla entry, let's track there
  https://bugzilla.kernel.org/show_bug.cgi?id=3D217084


Takashi