[fedora-arm] Re: Kernel update has lost XMOS USB hardware

On Fri, Jul 9, 2021 at 10:10 AM David W. Legg <dwlegg@gmail.com> wrote:
>
> I tried updating my Fedora 34 kernel from-
>
> 5.11.17-300
>
> to
>
> 5.12.14-300
>
> and it no longer recognises my XMOS USB device:
>
> $ cat /proc/asound/cards
>
> 0 [ALSA ]: bcm2835_alsa - bcm2835 ALSA
> bcm2835 ALSA
> 1 [vc4hdmi0 ]: vc4-hdmi - vc4-hdmi-0
> vc4-hdmi-0
> 2 [vc4hdmi1 ]: vc4-hdmi - vc4-hdmi-1
> vc4-hdmi-1
> 4 [H20 ]: USB-Audio - HU300 HiFi 2.0
> Yunyue Audio HU300 HiFi 2.0 at usb-0000:01:00.0-1.3, high speed
>
> So, device number 4 is missing with the 5.12.14-300 kernel.
>
> Given that the rpi4 is not yet supported, whom should I tell about this apparent bug, please?

What's a "XMOS USB hardware"? I doubt being USB it's specific to the
RPi4, does it work on another devices such as an x86 device? Can you
give more information about the device, what driver does it use when
it worked, what's the output of the lsusb line for it etc.
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