Re: kernel 5.4.11: problems with usb sound cards

[Johan Hovold]

On Sun, Feb 02, 2020 at 11:19:33AM +0100, Johan Hovold wrote:

> Since commit 3e4f8e21c4f2 ("USB: core: fix check for duplicate
> endpoints") USB core ignores any duplicate endpoints, but in this case
> we really want to ignore the first instance.
> 
> Can you try the below patch, which adds a blacklist quirk for the broken
> endpoint descriptor?

I realised I forgot the test to match on the device descriptor when
applying the blacklist. It doesn't matter currently since I only enable
the quirk for your device, but if you haven't tested the patch already,
would you mind testing the below patch instead?

Johan