[PATCH] ALSA: usb-audio: Add quirk for VF0770

[Takashi Iwai]

On Mon, 11 Oct 2021 19:12:56 +0200,
Jonas Hahnfeld wrote:
> 
> Am Sonntag, dem 10.10.2021 um 22:26 +0200 schrieb Takashi Iwai:
> > On Sun, 10 Oct 2021 13:19:47 +0200,
> > Jonas Hahnfeld wrote:
> > > 
> > > The device advertises 8 formats, but only a rate of 48kHz is honored
> > > by the hardware and 24 bits give chopped audio, so only report the
> > > one working combination. This fixes out-of-the-box audio experience
> > > with PipeWire which otherwise attempts to choose S24_3LE (while
> > > PulseAudio defaulted to S16_LE).
> > > 
> > > Signed-off-by: Jonas Hahnfeld <hahnjo at hahnjo.de>
> > 
> > Could you give alsa-info.sh output with and without patch, just for
> > comparison?  Run the script with --no-upload option and attach the
> > outputs.
> 
> Attached. Let me know if I should put any of this into the commit
> message.

Thanks.  The device is a UAC1, so the format quirk seems to be a valid
way.

But I found the terminator entry (.ifnum = -1) is missing in the
QUIRK_COMPOSITE array.  Could you resubmit with the fix?


thanks,

Takashi