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SubjectRe: kernel 5.4.11: problems with usb sound cards
On Mon, 03 Feb 2020 00:28:16 +0100,
edes wrote:
>
>
> el 2020-02-02 a las 14:41 Johan Hovold escribió:
>
> > 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?
>
> Hi, Johan, thank you for looking into this. I tested your patch, and it
> works! (5.4.11 and 5.5.0).
>
> I haven't performed extensive tests, but the card is again recognized as
> both playback and capture device. Thank you!
>
> Is this and acceptable solution and will this patch be integrated into the
> kernel?

I don't mind where to blacklist; we may add a similar quirk in
USB-audio driver side, too.


thanks,

Takashi

>
> OTOH, you said:
>
> > Ok, so the device has a broken altsetting 3 for interface 1, where
> > endpoint 0x85 is declared as an isochronous endpoint, despite being used
> > by interface 2 as an audio endpoint:
> [...]
> > Note that the broken altsetting probably should be using endpoint 0x81
> > just like the other altsettings for that interface,
>
> I can't say I understand exactly what you're saying, but do you think it
> could be worth contacting the company and see if they are willing to fix
> this with a new firmware?
>
> Anyway, it's working now, thank you again.
>
>
>
> --
>

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