linux-kernel - Re: 回复: Re: 回复: Re: [PATCH] ALSA: usb-audio: fix Hamedal C20 usb camero disconnect issue

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Message-ID: <87pmdztc1x.wl-tiwai@suse.de>
Date:   Mon, 07 Nov 2022 09:15:54 +0100
From:   Takashi Iwai <tiwai@...e.de>
To:     艾超 <aichao@...inos.cn>
Cc:     <perex@...ex.cz>, <tiwai@...e.com>, <alsa-devel@...a-project.org>,
        <linux-kernel@...r.kernel.org>
Subject: Re: 回复: Re: 回复: Re: [PATCH]
 ALSA: usb-audio: fix Hamedal C20 usb camero disconnect issue

On Mon, 07 Nov 2022 02:33:57 +0100,
艾超 wrote:
> 
>     Yes, the audio device is a UAC1 device, and it used set_sample_rate_v1 to
> set sample.
> 
>     So, I add a quirk to keep up the USB interface up even if the audio stream
> is closed.

Well, my question is also about the parameter changes.  This interface
reset doesn't cause any problem?  Or we should skip the interface
clear there, too?


Takashi

> 
> ----
> 
> 主　题：Re: 回复: Re: [PATCH] ALSA: usb-audio: fix Hamedal C20 usb camero
> disconnect issue            
> 日　期：2022-11-04 17:59            
> 发件人：Takashi Iwai            
> 收件人：艾超                    
> 
> On Fri, 04 Nov 2022 10:50:48 +0100,
> 艾超 wrote:
> >
> > I 'm sorry, I don't know whether you receiver my mail for 'lsusb -v' to
> > Hamedal C20
> 
> I received your previous mails including lsusb -v output.  But the
> post was filtered out by some reason?
> 
> So the audio device looks like a UAC1 device.  And this one requires
> to keep up the USB interface up even if the audio stream is closed
> (not about the parameter changes)?
> 
> Takashi
> 
>