This is a note to let you know that I've just added the patch titled
ALSA: usb-audio: Fix microphone sound on Opencomm2 Headset
to the 5.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
alsa-usb-audio-fix-microphone-sound-on-opencomm2-headset.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 6a83d6f3bb3c329a73e3483651fb77b78bac1878 Mon Sep 17 00:00:00 2001
From: WhaleChang <whalechang@xxxxxxxxxx>
Date: Fri, 6 Oct 2023 12:48:49 +0800
Subject: ALSA: usb-audio: Fix microphone sound on Opencomm2 Headset
From: WhaleChang <whalechang@xxxxxxxxxx>
commit 6a83d6f3bb3c329a73e3483651fb77b78bac1878 upstream.
When a Opencomm2 Headset is connected to a Bluetooth USB dongle,
the audio playback functions properly, but the microphone does not work.
In the dmesg logs, there are messages indicating that the init_pitch
function fails when the capture process begins.
The microphone only functions when the ep pitch control is not set.
Toggling the pitch control off bypasses the init_piatch function
and allows the microphone to work.
Signed-off-by: WhaleChang <whalechang@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20231006044852.4181022-1-whalechang@xxxxxxxxxx
Signed-off-by: Takashi Iwai <tiwai@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
sound/usb/quirks.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
--- a/sound/usb/quirks.c
+++ b/sound/usb/quirks.c
@@ -1725,7 +1725,11 @@ void snd_usb_audioformat_attributes_quir
/* mic works only when ep packet size is set to wMaxPacketSize */
fp->attributes |= UAC_EP_CS_ATTR_FILL_MAX;
break;
-
+ case USB_ID(0x3511, 0x2b1e): /* Opencomm2 UC USB Bluetooth dongle */
+ /* mic works only when ep pitch control is not set */
+ if (stream == SNDRV_PCM_STREAM_CAPTURE)
+ fp->attributes &= ~UAC_EP_CS_ATTR_PITCH_CONTROL;
+ break;
}
}
Patches currently in stable-queue which might be from whalechang@xxxxxxxxxx are
queue-5.15/alsa-usb-audio-fix-microphone-sound-on-opencomm2-headset.patch
