Paul Bonser wrote:
> This device incorrectly reports its bInterfaceClass as 255, when it
> should really be 1 (USB_CLASS_AUDIO).
>
> +++ b/sound/usb/quirks-table.h
> +{
> + /* Akai MPC Element */
> + USB_DEVICE(0x09e8, 0x0021),
> + .bInterfaceClass = USB_CLASS_AUDIO,
> +},
This is not a correct usb_device_id entry.
Show the output of "lsusb -v" for this device.
And read Documentation/SubmittingPatches.
Regards,
Clemens
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