linux-kernel - Re: [PATCH] ALSA: usb-audio: move mixer_quirks' min

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Message-ID: <874itti9yu.wl-tiwai@suse.de>
Date: Wed, 27 Aug 2025 07:56:25 +0200
From: Takashi Iwai <tiwai@...e.de>
To: cryolitia@...ontech.com,
	Cryolitia PukNgae via B4 Relay <devnull+cryolitia.uniontech.com@...nel.org>
Cc: Jaroslav Kysela <perex@...ex.cz>,
	Takashi Iwai <tiwai@...e.com>,
	linux-sound@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Mingcong Bai <jeffbai@...c.io>,
	Kexy Biscuit <kexybiscuit@...c.io>,
	Wang Yuli <wangyuli@...pin.org>,
	Guan Wentao <guanwentao@...ontech.com>,
	Nie Cheng <niecheng1@...ontech.com>,
	Zhan Jun <zhanjun@...ontech.com>,
	Celeste Liu <CoelacanthusHex@...il.com>,
	Guoli An <anguoli@...ontech.com>
Subject: Re: [PATCH] ALSA: usb-audio: move mixer_quirks' min_mute into common quirk

On Wed, 27 Aug 2025 05:29:02 +0200,
Cryolitia PukNgae via B4 Relay wrote:
> 
> From: Cryolitia PukNgae <cryolitia@...ontech.com>
> 
> We have found more and more devices that have the same problem, that
> the mixer's minimum value is muted. Accroding to pipewire's MR[1]
> and Arch Linux wiki[2], this should be a very common problem in USB
> audio devices. Move the quirk into common quirk,as a preparation of
> more devices' quirk's patch coming on the road[3].
> 
> 1. https://gitlab.freedesktop.org/pipewire/pipewire/-/merge_requests/2514
> 2. https://wiki.archlinux.org/index.php?title=PipeWire&oldid=804138#No_sound_from_USB_DAC_until_30%_volume
> 3. On the road, in the physical sense. We have been buying ton of
>    these devices for testing the problem.
> 
> Tested-by: Guoli An <anguoli@...ontech.com>
> Signed-off-by: Cryolitia PukNgae <cryolitia@...ontech.com>
> ---
> I also would like to know if the quirk worth a kernel param.

If the workaround becomes common for various devices, it makes sense.
Applied now to for-linus branch.


thanks,

Takashi