FAILED: patch "[PATCH] ALSA: usb-audio: Add mic resolution quirk for Logitech Webcam C200" failed to apply to 6.1-stable tree

FAILED: patch "[PATCH] ALSA: usb-audio: Add mic resolution quirk for Logitech Webcam C200" failed to apply to 6.1-stable tree

[Sasha Levin]

The patch below does not apply to the 6.1-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 <stable@vger.kernel.org>.

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-6.1.y
git checkout FETCH_HEAD
git cherry-pick -x 874323b68c93c6808e034dc0113681e822e6fb42
# <resolve conflicts, build, test, etc.>
git commit -s
git send-email --to '<stable@vger.kernel.org>' --in-reply-to '20261107054605-failed-6.1-874323b68c93@kernel.org' --subject-prefix 'PATCH 6.1.y' 'HEAD^..'

Thanks,
Sasha

------------------ original commit in Linus's tree ------------------

From 874323b68c93c6808e034dc0113681e822e6fb42 Mon Sep 17 00:00:00 2001
From: Olivier Kaloudoff <olivier.kaloudoff@gmail.com>
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 <olivier.kaloudoff@gmail.com>
Cc: stable@vger.kernel.org
Link: https://patch.msgid.link/20261008230844.11246-1-olivier.kaloudoff@gmail.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
---
 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

[PATCH 6.1.y 1/3] ALSA: usb-audio: rename QUIRK_FLAG_MIXER_MIN_MUTE to QUIRK_FLAG_MIXER_PLAYBACK_MIN_MUTE

[Sasha Levin]

From: Cryolitia PukNgae <cryolitia@uniontech.com>

[ Upstream commit ace1817ab49b3f92b3e965caa63b4a78e69266cd ]

As a preparation of introduction QUIRK_FLAG_MIXER_CAPTURE_MIN_MUTE

Also make it printing an info while applying

Signed-off-by: Cryolitia PukNgae <cryolitia@uniontech.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://patch.msgid.link/20250903-sound-v1-1-d4ca777b8512@uniontech.com
Stable-dep-of: 874323b68c93 ("ALSA: usb-audio: Add mic resolution quirk for Logitech Webcam C200")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 sound/usb/mixer_quirks.c |  7 +++++--
 sound/usb/quirks.c       | 20 ++++++++++----------
 sound/usb/usbaudio.h     |  4 ++--
 3 files changed, 17 insertions(+), 14 deletions(-)

diff --git a/sound/usb/mixer_quirks.c b/sound/usb/mixer_quirks.c
index 90de8ae32eb62..e3fda32bac1cb 100644
--- a/sound/usb/mixer_quirks.c
+++ b/sound/usb/mixer_quirks.c
@@ -3921,9 +3921,12 @@ void snd_usb_mixer_fu_apply_quirk(struct usb_mixer_interface *mixer,
 	}
 
 	/* lowest playback value is muted on some devices */
-	if (mixer->chip->quirk_flags & QUIRK_FLAG_MIXER_MIN_MUTE)
-		if (strstr(kctl->id.name, "Playback"))
+	if (mixer->chip->quirk_flags & QUIRK_FLAG_MIXER_PLAYBACK_MIN_MUTE)
+		if (strstr(kctl->id.name, "Playback")) {
+			usb_audio_info(mixer->chip,
+				       "applying playback min mute quirk\n");
 			cval->min_mute = 1;
+		}
 
 	/* ALSA-ify some Plantronics headset control names */
 	if (USB_ID_VENDOR(mixer->chip->usb_id) == 0x047f &&
diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c
index 6dc54fd449f78..55453873524be 100644
--- a/sound/usb/quirks.c
+++ b/sound/usb/quirks.c
@@ -2100,9 +2100,9 @@ static const struct usb_audio_quirk_flags_table quirk_flags_table[] = {
 	DEVICE_FLG(0x0556, 0x0014, /* Phoenix Audio TMX320VC */
 		   QUIRK_FLAG_GET_SAMPLE_RATE),
 	DEVICE_FLG(0x0572, 0x1b08, /* Conexant Systems (Rockwell), Inc. */
-		   QUIRK_FLAG_MIXER_MIN_MUTE),
+		   QUIRK_FLAG_MIXER_PLAYBACK_MIN_MUTE),
 	DEVICE_FLG(0x0572, 0x1b09, /* Conexant Systems (Rockwell), Inc. */
-		   QUIRK_FLAG_MIXER_MIN_MUTE),
+		   QUIRK_FLAG_MIXER_PLAYBACK_MIN_MUTE),
 	DEVICE_FLG(0x05a3, 0x9420, /* ELP HD USB Camera */
 		   QUIRK_FLAG_GET_SAMPLE_RATE),
 	DEVICE_FLG(0x05a7, 0x1020, /* Bose Companion 5 */
@@ -2146,15 +2146,15 @@ static const struct usb_audio_quirk_flags_table quirk_flags_table[] = {
 	DEVICE_FLG(0x0b0e, 0x0349, /* Jabra 550a */
 		   QUIRK_FLAG_CTL_MSG_DELAY_1M),
 	DEVICE_FLG(0x0bda, 0x498a, /* Realtek Semiconductor Corp. */
-		   QUIRK_FLAG_MIXER_MIN_MUTE),
+		   QUIRK_FLAG_MIXER_PLAYBACK_MIN_MUTE),
 	DEVICE_FLG(0x0c45, 0x6340, /* Sonix HD USB Camera */
 		   QUIRK_FLAG_GET_SAMPLE_RATE),
 	DEVICE_FLG(0x0c45, 0x636b, /* Microdia JP001 USB Camera */
 		   QUIRK_FLAG_GET_SAMPLE_RATE),
 	DEVICE_FLG(0x0d8c, 0x000c, /* C-Media */
-		   QUIRK_FLAG_MIXER_MIN_MUTE),
+		   QUIRK_FLAG_MIXER_PLAYBACK_MIN_MUTE),
 	DEVICE_FLG(0x0d8c, 0x0014, /* C-Media */
-		   QUIRK_FLAG_CTL_MSG_DELAY_1M | QUIRK_FLAG_MIXER_MIN_MUTE),
+		   QUIRK_FLAG_CTL_MSG_DELAY_1M | QUIRK_FLAG_MIXER_PLAYBACK_MIN_MUTE),
 	DEVICE_FLG(0x0ecb, 0x205c, /* JBL Quantum610 Wireless */
 		   QUIRK_FLAG_FIXED_RATE),
 	DEVICE_FLG(0x0ecb, 0x2125, /* JBL Quantum650 Wireless */
@@ -2166,7 +2166,7 @@ static const struct usb_audio_quirk_flags_table quirk_flags_table[] = {
 	DEVICE_FLG(0x1101, 0x0003, /* Audioengine D1 */
 		   QUIRK_FLAG_GET_SAMPLE_RATE),
 	DEVICE_FLG(0x12d1, 0x3a07, /* Huawei Technologies Co., Ltd. */
-		   QUIRK_FLAG_MIXER_MIN_MUTE),
+		   QUIRK_FLAG_MIXER_PLAYBACK_MIN_MUTE),
 	DEVICE_FLG(0x1224, 0x2a25, /* Jieli Technology USB PHY 2.0 */
 		   QUIRK_FLAG_GET_SAMPLE_RATE | QUIRK_FLAG_MIC_RES_16),
 	DEVICE_FLG(0x1395, 0x740a, /* Sennheiser DECT */
@@ -2212,7 +2212,7 @@ static const struct usb_audio_quirk_flags_table quirk_flags_table[] = {
 	DEVICE_FLG(0x1901, 0x0191, /* GE B850V3 CP2114 audio interface */
 		   QUIRK_FLAG_GET_SAMPLE_RATE),
 	DEVICE_FLG(0x19f7, 0x0003, /* RODE NT-USB */
-		   QUIRK_FLAG_MIXER_MIN_MUTE),
+		   QUIRK_FLAG_MIXER_PLAYBACK_MIN_MUTE),
 	DEVICE_FLG(0x19f7, 0x0035, /* RODE NT-USB+ */
 		   QUIRK_FLAG_GET_SAMPLE_RATE),
 	DEVICE_FLG(0x1bcf, 0x2281, /* HD Webcam */
@@ -2270,7 +2270,7 @@ static const struct usb_audio_quirk_flags_table quirk_flags_table[] = {
 	DEVICE_FLG(0x2912, 0x30c8, /* Audioengine D1 */
 		   QUIRK_FLAG_GET_SAMPLE_RATE),
 	DEVICE_FLG(0x2a70, 0x1881, /* OnePlus Technology (Shenzhen) Co., Ltd. BE02T */
-		   QUIRK_FLAG_MIXER_MIN_MUTE),
+		   QUIRK_FLAG_MIXER_PLAYBACK_MIN_MUTE),
 	DEVICE_FLG(0x2b53, 0x0023, /* Fiero SC-01 (firmware v1.0.0 @ 48 kHz) */
 		   QUIRK_FLAG_GENERIC_IMPLICIT_FB),
 	DEVICE_FLG(0x2b53, 0x0024, /* Fiero SC-01 (firmware v1.0.0 @ 96 kHz) */
@@ -2282,13 +2282,13 @@ static const struct usb_audio_quirk_flags_table quirk_flags_table[] = {
 	DEVICE_FLG(0x2d95, 0x8021, /* VIVO USB-C-XE710 HEADSET */
 		   QUIRK_FLAG_CTL_MSG_DELAY_1M),
 	DEVICE_FLG(0x2d99, 0x0026, /* HECATE G2 GAMING HEADSET */
-		   QUIRK_FLAG_MIXER_MIN_MUTE),
+		   QUIRK_FLAG_MIXER_PLAYBACK_MIN_MUTE),
 	DEVICE_FLG(0x2fc6, 0xf0b7, /* iBasso DC07 Pro */
 		   QUIRK_FLAG_CTL_MSG_DELAY_1M),
 	DEVICE_FLG(0x30be, 0x0101, /* Schiit Hel */
 		   QUIRK_FLAG_IGNORE_CTL_ERROR),
 	DEVICE_FLG(0x339b, 0x3a07, /* Synaptics HONOR USB-C HEADSET */
-		   QUIRK_FLAG_MIXER_MIN_MUTE),
+		   QUIRK_FLAG_MIXER_PLAYBACK_MIN_MUTE),
 	DEVICE_FLG(0x413c, 0xa506, /* Dell AE515 sound bar */
 		   QUIRK_FLAG_GET_SAMPLE_RATE),
 	DEVICE_FLG(0x534d, 0x0021, /* MacroSilicon MS2100/MS2106 */
diff --git a/sound/usb/usbaudio.h b/sound/usb/usbaudio.h
index 17db6a7f3a844..67dfdc62a179f 100644
--- a/sound/usb/usbaudio.h
+++ b/sound/usb/usbaudio.h
@@ -180,7 +180,7 @@ extern bool snd_usb_skip_validation;
  *  for the given endpoint.
  * QUIRK_FLAG_MIC_RES_16 and QUIRK_FLAG_MIC_RES_384
  *  Set the fixed resolution for Mic Capture Volume (mostly for webcams)
- * QUIRK_FLAG_MIXER_MIN_MUTE
+ * QUIRK_FLAG_MIXER_PLAYBACK_MIN_MUTE
  *  Set minimum volume control value as mute for devices where the lowest
  *  playback value represents muted state instead of minimum audible volume
  */
@@ -209,6 +209,6 @@ extern bool snd_usb_skip_validation;
 #define QUIRK_FLAG_FIXED_RATE		(1U << 21)
 #define QUIRK_FLAG_MIC_RES_16		(1U << 22)
 #define QUIRK_FLAG_MIC_RES_384		(1U << 23)
-#define QUIRK_FLAG_MIXER_MIN_MUTE	(1U << 24)
+#define QUIRK_FLAG_MIXER_PLAYBACK_MIN_MUTE	(1U << 24)
 
 #endif /* __USBAUDIO_H */
-- 
2.53.0

[PATCH 6.1.y 2/3] ALSA: usb-audio: add volume quirks for MS LifeChat LX-3000

[Sasha Levin]

From: Pauli Virtanen <pav@iki.fi>

[ Upstream commit 9af61fc91486c7ba93cf1ec3bd381978cac8308c ]

ID 045e:070f Microsoft Corp. LifeChat LX-3000 Headset
has muted minimum Speaker Playback Volume, and 4 amixer steps were
observed to produce 1 actual volume step.

Apply min_mute quirk and correct res=48 -> 4*48.
Tested with the device.

Signed-off-by: Pauli Virtanen <pav@iki.fi>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Stable-dep-of: 874323b68c93 ("ALSA: usb-audio: Add mic resolution quirk for Logitech Webcam C200")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 sound/usb/mixer.c  | 8 ++++++++
 sound/usb/quirks.c | 2 ++
 2 files changed, 10 insertions(+)

diff --git a/sound/usb/mixer.c b/sound/usb/mixer.c
index 45a4a8c7a697d..9d54998634094 100644
--- a/sound/usb/mixer.c
+++ b/sound/usb/mixer.c
@@ -1156,6 +1156,14 @@ static void volume_control_quirks(struct usb_mixer_elem_info *cval,
 		}
 		break;
 
+	case USB_ID(0x045e, 0x070f): /* MS LifeChat LX-3000 Headset */
+		if (!strcmp(kctl->id.name, "Speaker Playback Volume")) {
+			usb_audio_info(chip,
+				"set volume quirk for MS LifeChat LX-3000\n");
+			cval->res = 192;
+		}
+		break;
+
 	case USB_ID(0x0471, 0x0101):
 	case USB_ID(0x0471, 0x0104):
 	case USB_ID(0x0471, 0x0105):
diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c
index 55453873524be..52164ae35250c 100644
--- a/sound/usb/quirks.c
+++ b/sound/usb/quirks.c
@@ -2056,6 +2056,8 @@ static const struct usb_audio_quirk_flags_table quirk_flags_table[] = {
 	DEVICE_FLG(0x045e, 0x083c, /* MS USB Link headset */
 		   QUIRK_FLAG_GET_SAMPLE_RATE | QUIRK_FLAG_CTL_MSG_DELAY |
 		   QUIRK_FLAG_DISABLE_AUTOSUSPEND),
+	DEVICE_FLG(0x045e, 0x070f, /* MS LifeChat LX-3000 Headset */
+		   QUIRK_FLAG_MIXER_PLAYBACK_MIN_MUTE),
 	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

[PATCH 6.1.y 3/3] ALSA: usb-audio: Add mic resolution quirk for Logitech Webcam C200

[Sasha Levin]

From: Olivier Kaloudoff <olivier.kaloudoff@gmail.com>

[ Upstream commit 874323b68c93c6808e034dc0113681e822e6fb42 ]

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 <olivier.kaloudoff@gmail.com>
Cc: stable@vger.kernel.org
Link: https://patch.msgid.link/20261008230844.11246-1-olivier.kaloudoff@gmail.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 sound/usb/quirks.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c
index 52164ae35250c..45a2753d483cf 100644
--- a/sound/usb/quirks.c
+++ b/sound/usb/quirks.c
@@ -2058,6 +2058,8 @@ 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