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ALSA: usb-audio: Fix sticky mixer regressions on M-Audio Fast Track Ultra

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The recent fix for sticky mixer volumes caused regressions of M-audio
Fast Track Ultra device, where the mixer state is kept to the default
value.

Add the quirk entries to tolerate the broken mixer behavior.  As the
device is known to work in the implicit feedback mode, explicitly
enable the implicit feedback mode, too.

Since there are two FTU models that are almost identical, both entries
are added in this patch (0763:2080 and 0763:2081).

Fixes: 86aa1ea1f1 ("ALSA: usb-audio: Do not expose sticky mixers")
Link: https://bugzilla.suse.com/show_bug.cgi?id=1273166
Link: https://patch.msgid.link/20260807083418.1712585-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai
2026-08-07 10:34:16 +02:00
parent d03cdb1c36
commit a8934c2c6d
1 changed files with 4 additions and 0 deletions
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4
sound/usb/quirks.c
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@@ -2327,6 +2327,10 @@ static const struct usb_audio_quirk_flags_table quirk_flags_table[] = {
QUIRK_FLAG_GENERIC_IMPLICIT_FB),
DEVICE_FLG(0x0763, 0x2031, /* M-Audio Fast Track C600 */
QUIRK_FLAG_GENERIC_IMPLICIT_FB),
DEVICE_FLG(0x0763, 0x2080, /* M-Audio Fast Track Ultra */
QUIRK_FLAG_MIXER_GET_CUR_BROKEN | QUIRK_FLAG_GENERIC_IMPLICIT_FB),
DEVICE_FLG(0x0763, 0x2081, /* M-Audio Fast Track Ultra */
QUIRK_FLAG_MIXER_GET_CUR_BROKEN | QUIRK_FLAG_GENERIC_IMPLICIT_FB),
DEVICE_FLG(0x07fd, 0x000b, /* MOTU M Series 2nd hardware revision */
QUIRK_FLAG_CTL_MSG_DELAY_1M),
DEVICE_FLG(0x08bb, 0x2702, /* LineX FM Transmitter */