From: Takashi Iwai <tiwai@suse.de>
To: Ai Chao <aichao@kylinos.cn>
Cc: perex@perex.cz, tiwai@suse.com, hulianqin@vivo.com, i@rong.moe,
g@b4.vu, cryolitia@uniontech.com, pav@iki.fi,
linux-sound@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] ALSA: usb-audio: Add quirk flags for SC13A
Date: Wed, 17 Jun 2026 11:06:00 +0200 [thread overview]
Message-ID: <87o6h9pmdj.wl-tiwai@suse.de> (raw)
In-Reply-To: <20260617025234.3344935-1-aichao@kylinos.cn>
On Wed, 17 Jun 2026 04:52:34 +0200,
Ai Chao wrote:
>
> The SC13A ( VID 0x1ff7, PID 0x0f81) not support reading the current
> sample rate and results in an error message printed to kmsg. Set
> QUIRK_FLAG_GET_SAMPLE_RATE to skip the sample rate check.
>
> Quirky device sample:
> usb 3-5.2.4.1: new high-speed USB device number 11 using xhci_hcd
> usb 3-5.2.4.1: New USB device found, idVendor=1ff7, idProduct=0f81
> usb 3-5.2.4.1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
> usb 3-5.2.4.1: Product: SC13A
> usb 3-5.2.4.1: Manufacturer: Linux Foundation
> usb 3-5.2.4.1: SerialNumber: 000002
> usb 3-5.2.4.1: Found UVC 1.50 device SC13A (1ff7:0f81)
> usb 3-5.2.4.1: 3:1: cannot get freq at ep 0x86
> usb 3-5.2.4.1: Warning! Unlikely big volume range (=4096),
> cval->res is probably wrong.
> usb 3-5.2.4.1: [5] FU [Mic Capture Volume] ch = 1, val = 0/4096/1
> usbcore: registered new interface driver snd-usb-audio
> usb 3-5.2.4.1: 3:1: cannot get freq at ep 0x86
> usb 3-5.2.4.1: 3:1: cannot get freq at ep 0x86
>
> Signed-off-by: Ai Chao <aichao@kylinos.cn>
Applied now. Thanks.
Takashi
next prev parent reply other threads:[~2026-06-17 9:06 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-17 2:52 Ai Chao
2026-06-17 9:06 ` Takashi Iwai [this message]
2026-06-17 12:12 ` Rong Zhang
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