From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1794050409; b=c6zrpE2Flk76h6cU+UhJCG25SRvItsfQfunkkDr0ieF44qBxZZQaQnt0oOlhgsRcJMfT emV8ijIjRqRtKRFu/45sLLzMP0l8CXzrsetkjpDOncd5i5OBuOgfaJnfXuP/+4Eiljd0k 13QoGy5C6AZabWRqEV8vmUb6DRYl6f95taZ9H4OVxw+Zw9/qWD687QJFSKb7EMJbe9vrw h58FUd9OjYnkhsSEMD6Jy8NeM6XayzZzZyiKYH3utZ5Fb+k3ITmLivOGIHk9nHO3z624P 0cYE+zSrE3JTcCIFKvgjD1SXSve+vzdZPaBw/vqD/YtaMV5n9UMkKgmzCDsAXFt+3AA== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794050409; h=Received:DKIM-Signature:From:To:Cc:Subject:Date:Message-ID:X-Mailer: MIME-Version:Content-Type:Content-Transfer-Encoding; bh=38ZV6Gi/WdT0rWBHO93fyQbasLyHgkbPvz/ieAkv4aI=; b=0qXWwIkigLNWuhmbsnNecz+HoRQJ7j58mFVWQabPBPyHN2T5OXhqy2yqebzOVxwV6tDt hGTiv76xMm9XbfPfGohOOuZdickIiL5r9rL52/q4bdCUjcxUzhtHCmcYcqCPSOjLZi3gm A+hi4A6mRjv5IFmyYs+i+wNlk3fB80NB8ireXXjHFzot2gMr1UFnW3w9QQp9cjLTEfgkW GRm5pElljPPceq6kZ7hMS5/MS9pm08CZo7EAtsiK5r+Rk6YqlTT9ZR6K5Q/GXYbgSrGM6 3k0ytxZA7DuV0ZLZe11pSz7/2gCcyrZOy/PxjyXn5t18ke/qWvKFbU29JgY7Y7lEitw== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=eIHPEDAY; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 513E7606A326 for ; Sat, 7 Nov 2026 11:20:09 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=eIHPEDAY Received: by smtp.kernel.org (Postfix) with ESMTPSA id C0F531F0089F; Sat, 7 Nov 2026 11:20:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1794050409; bh=38ZV6Gi/WdT0rWBHO93fyQbasLyHgkbPvz/ieAkv4aI=; h=From:To:Cc:Subject:Date; b=eIHPEDAYV03rBCASoniwqSqPmLdgkJaEYJ71iJX2Ys1VSEqjXyx0X2i28D4fw7Ans atrFWRKqTsRgtI9jhF2Tm68MVqxl+GW9asE3etZCyJWDt32VPTcd/A2S16SkPsbTDF Uoy3nWTNHWuuFhj3aQoMNtC2x1Xq3w9vaP2O8wdqp/nj2tHF4ac6Wj79FWmghvQVWB qHoQV/znQBPoH2Tx94LXkEOrjq/cONish7n4wpdWUswtL5XtGB1FMbNy07rlz+6WYv 0VoCW74Awtb2xRu0P78Yocz/49hngz4ANPm0wUHwydWvzvagUiaUwua4n60JojSGFX jTz5lMltPKT2g== From: Sasha Levin To: olivier.kaloudoff@gmail.com, tiwai@suse.de Cc: stable@vger.kernel.org Subject: FAILED: patch "[PATCH] ALSA: usb-audio: Add mic resolution quirk for Logitech Webcam C200" failed to apply to 5.10-stable tree Date: Sat, 7 Nov 2026 06:20:07 -0500 Message-ID: <20261107062007-failed-5.10-874323b68c93@kernel.org> X-Mailer: git-send-email 2.53.0 X-Mailing-List: stable@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The patch below does not apply to the 5.10-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to . To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.10.y git checkout FETCH_HEAD git cherry-pick -x 874323b68c93c6808e034dc0113681e822e6fb42 # git commit -s git send-email --to '' --in-reply-to '20261107062007-failed-5.10-874323b68c93@kernel.org' --subject-prefix 'PATCH 5.10.y' 'HEAD^..' Thanks, Sasha ------------------ original commit in Linus's tree ------------------ >From 874323b68c93c6808e034dc0113681e822e6fb42 Mon Sep 17 00:00:00 2001 From: Olivier Kaloudoff Date: Fri, 9 Oct 2026 01:08:44 +0200 Subject: [PATCH] ALSA: usb-audio: Add mic resolution quirk for Logitech Webcam C200 The C200 (046d:0802) reports a mic capture volume range of 1536..7680 with a resolution of 1 (6144 steps), triggering "Warning! Unlikely big volume step count (=6144), linear volume or wrong cval->res?" at probe and exposing a uselessly fine-grained mixer control. This is the same firmware behavior as the other UVC-era Logitech webcams already carrying QUIRK_FLAG_MIC_RES_384 (C500, C600, C210, C270, C310, C510, C525, ...), so apply the same quirk: CTL_MSG_DELAY_1M (which the Logitech VENDOR_FLG would provide if the device-specific entry did not short-circuit the lookup) plus MIC_RES_384. Verified on real hardware: with the quirk the warning disappears and the driver logs "set resolution quirk: cval->res = 384". Signed-off-by: Olivier Kaloudoff Cc: stable@vger.kernel.org Link: https://patch.msgid.link/20261008230844.11246-1-olivier.kaloudoff@gmail.com Signed-off-by: Takashi Iwai --- sound/usb/quirks.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c index 170f68db74fa4..7a5c95de86ceb 100644 --- a/sound/usb/quirks.c +++ b/sound/usb/quirks.c @@ -2494,6 +2494,8 @@ static const struct usb_audio_quirk_flags_table quirk_flags_table[] = { QUIRK_FLAG_DISABLE_AUTOSUSPEND), DEVICE_FLG(0x045e, 0x070f, /* MS LifeChat LX-3000 Headset */ QUIRK_FLAG_MIXER_PLAYBACK_MIN_MUTE), + DEVICE_FLG(0x046d, 0x0802, /* Logitech Webcam C200 */ + QUIRK_FLAG_CTL_MSG_DELAY_1M | QUIRK_FLAG_MIC_RES_384), DEVICE_FLG(0x046d, 0x0807, /* Logitech Webcam C500 */ QUIRK_FLAG_CTL_MSG_DELAY_1M | QUIRK_FLAG_MIC_RES_384), DEVICE_FLG(0x046d, 0x0808, /* Logitech Webcam C600 */ -- 2.53.0