This is a note to let you know that I've just added the patch titled
ALSA: usb-audio: Workarounds for Behringer UMC 204/404 HD
to the 5.18-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-workarounds-for-behringer-umc-204-404-hd.patch
and it can be found in the queue-5.18 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From ae8b1631561a3634cc09d0c62bbdd938eade05ec Mon Sep 17 00:00:00 2001
From: Takashi Iwai <tiwai@xxxxxxx>
Date: Fri, 24 Jun 2022 12:11:32 +0200
Subject: ALSA: usb-audio: Workarounds for Behringer UMC 204/404 HD
From: Takashi Iwai <tiwai@xxxxxxx>
commit ae8b1631561a3634cc09d0c62bbdd938eade05ec upstream.
Both Behringer UMC 202 HD and 404 HD need explicit quirks to enable
the implicit feedback mode and start the playback stream primarily.
The former seems fixing the stuttering and the latter is required for
a playback-only case.
Note that the "clock source 41 is not valid" error message still
appears even after this fix, but it should be only once at probe.
The reason of the error is still unknown, but this seems to be mostly
harmless as it's a one-off error and the driver retires the clock
setup and it succeeds afterwards.
BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=215934
Cc: <stable@xxxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20220624101132.14528-1-tiwai@xxxxxxx
Signed-off-by: Takashi Iwai <tiwai@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
sound/usb/quirks.c | 4 ++++
1 file changed, 4 insertions(+)
--- a/sound/usb/quirks.c
+++ b/sound/usb/quirks.c
@@ -1842,6 +1842,10 @@ static const struct usb_audio_quirk_flag
QUIRK_FLAG_SHARE_MEDIA_DEVICE | QUIRK_FLAG_ALIGN_TRANSFER),
DEVICE_FLG(0x1395, 0x740a, /* Sennheiser DECT */
QUIRK_FLAG_GET_SAMPLE_RATE),
+ DEVICE_FLG(0x1397, 0x0508, /* Behringer UMC204HD */
+ QUIRK_FLAG_PLAYBACK_FIRST | QUIRK_FLAG_GENERIC_IMPLICIT_FB),
+ DEVICE_FLG(0x1397, 0x0509, /* Behringer UMC404HD */
+ QUIRK_FLAG_PLAYBACK_FIRST | QUIRK_FLAG_GENERIC_IMPLICIT_FB),
DEVICE_FLG(0x13e5, 0x0001, /* Serato Phono */
QUIRK_FLAG_IGNORE_CTL_ERROR),
DEVICE_FLG(0x154e, 0x1002, /* Denon DCD-1500RE */
Patches currently in stable-queue which might be from tiwai@xxxxxxx are
queue-5.18/alsa-usb-audio-workarounds-for-behringer-umc-204-404-hd.patch
queue-5.18/alsa-cs46xx-fix-missing-snd_card_free-call-at-probe-error.patch
queue-5.18/alsa-hda-realtek-add-quirk-for-clevo-l140pu.patch
