From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0A20E439F98; Mon, 17 Aug 2026 13:40:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786974032; cv=none; b=O7XGW3rYtepfYm/nzZ1fWX3KSwD/ZweNriYaeIu3ViJrFyMIGAto6qguKl9XlA3ITCe5np97Q4WMBV2YUMG+L7FNOr1nhgBV5Xz4eGwQvrNiayhgLaMNtbmlarGUU+RCzKagyb/5MN7KOt+FZZCF+TUGiZt7xDs5rv6pwOezD7Y= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786974032; c=relaxed/simple; bh=uzn8iDerMGbeBFm6DRw5n4VKLZKa1ZF3rynp4rtej+U=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=YlB3CTlNvH1iEQvYRWoKXBNc+V3LZT44LHJGg5YA6N12uCaV75k8dqill3bBMtWNk5Uqzw5jbwC7N1gVscJT1QxF5uQWSzNLQd7VhMUI3e0y0+4PubhXIGBj9Sxtb4n2MoZyI/XoqngnfF/FQgnF4nlqBTPFe5rsDWUmj2ZGouk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=SEb3CzL+; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="SEb3CzL+" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1EBB01F00A3A; Mon, 17 Aug 2026 13:40:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1786974028; bh=LGc9BzqXUujZYpTe7SDHdLaVvGi/k5hY51PPSHsLz/c=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=SEb3CzL+RZRohIzxQUCGd02Qmx6oXbT+SPqaVV4EBHi0zchBsEeXmNRwNWkSsRpgF ymxbM7hTzKOPe7EyuGOuc/VGIORj2/du/O0aW9LsAJuazoEXpaLyUQwyfJAZQaaFC0 IQB36FZWC0ehn/TxoVHzpNPmL74ZvcBJahzOc+Gw= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Brian van den Berg , Rong Zhang , Takashi Iwai , Sasha Levin Subject: [PATCH 7.1 064/271] ALSA: usb-audio: Add QUIRK_FLAG_MIXER_GET_CUR_BROKEN for Logitech PRO X 2 LIGHTSPEED Date: Mon, 17 Aug 2026 15:29:49 +0200 Message-ID: <20260817132539.375555340@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260817132536.752504388@linuxfoundation.org> References: <20260817132536.752504388@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 7.1-stable review patch. If anyone has any objections, please let me know. ------------------ From: Rong Zhang [ Upstream commit c973e61895db8fe4a69d8b33de92068d135cafd8 ] The UAC mixer of the Logitech PRO X 2 LIGHTSPEED has broken mixer GET_CUR behavior but otherwise works fine. Add a quirk table entry matching VID/PID=0x046d/0x0af7 and apply the MIXER_GET_CUR_BROKEN quirk flag to make the mixer usable again. Quirky device sample (after applying the quirk flag): usb 3-2.1: New USB device found, idVendor=046d, idProduct=0af7, bcdDevice= 1.00 usb 3-2.1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 usb 3-2.1: Product: PRO X 2 LIGHTSPEED usb 3-2.1: Manufacturer: Logitech usb 3-2.1: SerialNumber: 0000000000000000 usb 3-2.1: 2:0: broken mixer GET_CUR (-18944/0/256 => -2662) usb 3-2.1: 6:0: broken mixer GET_CUR (-18944/0/256 => 0) Fixes: 86aa1ea1f15c ("ALSA: usb-audio: Do not expose sticky mixers") Suggested-by: Brian van den Berg Reported-by: Brian van den Berg Link: https://lore.kernel.org/all/370007e6-b73b-4bfc-8410-a860781c7ad7@proton.me/ Signed-off-by: Rong Zhang Link: https://patch.msgid.link/20260731-uac-lg-pro-x-2-ls-v1-1-268eaefe66ab@rong.moe Signed-off-by: Takashi Iwai Signed-off-by: Sasha Levin --- sound/usb/quirks.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c index 688993bfa8fd1..e97038cf5271e 100644 --- a/sound/usb/quirks.c +++ b/sound/usb/quirks.c @@ -2249,6 +2249,8 @@ static const struct usb_audio_quirk_flags_table quirk_flags_table[] = { DEVICE_FLG(0x046d, 0x0a8f, /* Logitech H390 headset */ QUIRK_FLAG_CTL_MSG_DELAY_1M | QUIRK_FLAG_MIXER_PLAYBACK_MIN_MUTE), + DEVICE_FLG(0x046d, 0x0af7, /* Logitech PRO X 2 LIGHTSPEED */ + QUIRK_FLAG_MIXER_GET_CUR_BROKEN), DEVICE_FLG(0x0499, 0x1506, /* Yamaha THR5 */ QUIRK_FLAG_GENERIC_IMPLICIT_FB), DEVICE_FLG(0x0499, 0x1509, /* Steinberg UR22 */ -- 2.53.0