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From: Takashi Iwai <tiwai@suse.de>
To: edes <edes@gmx.net>
Cc: linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org,
	Johan Hovold <johan@kernel.org>, Takashi Iwai <tiwai@suse.de>
Subject: Re: kernel 5.4.11: problems with usb sound cards
Date: Mon, 03 Feb 2020 08:57:41 +0100	[thread overview]
Message-ID: <s5ha76085my.wl-tiwai@suse.de> (raw)
In-Reply-To: <20200202202816.5a1d8af1@acme7.acmenet>

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.
> 
> 
> 
> --
> 

  reply	other threads:[~2020-02-03  7:57 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-02-01 13:58 edes
2020-02-01 14:10 ` Johan Hovold
2020-02-01 16:26   ` edes
2020-02-02 10:19     ` Johan Hovold
2020-02-02 13:41       ` Johan Hovold
2020-02-02 23:28         ` edes
2020-02-03  7:57           ` Takashi Iwai [this message]
2020-02-03  8:29             ` Johan Hovold
2020-02-03  9:54               ` Takashi Iwai
2020-02-03  8:42           ` Johan Hovold

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