linux-kernel - Re: [PATCH] ALSA: usb-audio: Apply sample rate quirk to Logitech Connect

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Date:   Wed, 24 Mar 2021 11:16:12 +0000
From:   Joakim Tjernlund <Joakim.Tjernlund@...inera.com>
To:     "ikjn@...omium.org" <ikjn@...omium.org>,
        "perex@...ex.cz" <perex@...ex.cz>,
        "alsa-devel@...a-project.org" <alsa-devel@...a-project.org>,
        "tiwai@...e.com" <tiwai@...e.com>
CC:     "grpintar@...il.com" <grpintar@...il.com>,
        "linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>,
        "linux-kernel@...r.kernel" <linux-kernel@...r.kernel>,
        "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
        "dylan_robinson@...u.com" <dylan_robinson@...u.com>,
        "kai.heng.feng@...onical.com" <kai.heng.feng@...onical.com>,
        "dmitry@...ystems.ee" <dmitry@...ystems.ee>,
        "livvy@...e.nu" <livvy@...e.nu>,
        "alexander@...y.me" <alexander@...y.me>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] ALSA: usb-audio: Apply sample rate quirk to Logitech
 Connect

On Wed, 2021-03-24 at 18:51 +0800, Ikjoon Jang wrote:
> Logitech ConferenceCam Connect is a compound USB device with UVC and
> UAC. Not 100% reproducible but sometimes it keeps responding STALL to
> every control transfer once it receives get_freq request.
> 
> This patch adds 046d:0x084c to a snd_usb_get_sample_rate_quirk list.
> 
> Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=203419
> Signed-off-by: Ikjoon Jang <ikjn@...omium.org>

Most Logitech USB headset I got needs a delay in snd_usb_ctl_msg_quirk()
Have you tried to add say 20 ms delay in there?

 Jocke