ALSA: usb-audio: Fix mixer regression on SteelSeries Arctis Nova 5

The recent "sticky mixer" sanity check in USB-audio driver caused a
regression on SteelSeries Arctis Nova 5 (1038:2232); because the
firmware doesn't handle GET_CUR requests, some mixers are effectively
disabled, leading to the too low / soft volumes:
  usb 5-1.1: 9:0: sticky mixer values (-19712/0/256 => 0), disabling
  usb 5-1.1: 10:0: sticky mixer values (-21248/0/256 => 0), disabling

Restore the functionality by ignoring GET_CUR errors intentionally
with MIXER_GET_CUR_BROKEN quirk.

Fixes: 86aa1ea1f15c ("ALSA: usb-audio: Do not expose sticky mixers")
Reported-by: Gert Burger <gertburger@gmail.com>
Closes: https://lore.kernel.org/CAEQ1D3kdA3mkQx7ei9Kq0gwky0qroJqCLKrkvgfkqgTbeu086A@mail.gmail.com
Link: https://bbs.archlinux.org/viewtopic.php?id=314220
Link: https://patch.msgid.link/20260808152258.1948767-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c
index 90ca39dbed18bee89873630df86814266e93ab43..4d2957e62fbd3db6040ed8642944f6d42c8b842c 100644 (file)
--- a/sound/usb/quirks.c
+++ b/sound/usb/quirks.c
@@ -2367,6 +2367,8 @@ static const struct usb_audio_quirk_flags_table quirk_flags_table[] = {
                   QUIRK_FLAG_SHARE_MEDIA_DEVICE | QUIRK_FLAG_ALIGN_TRANSFER),
        DEVICE_FLG(0x1038, 0x1294, /* SteelSeries Arctis Pro Wireless */
                   QUIRK_FLAG_MIXER_PLAYBACK_MIN_MUTE),
+       DEVICE_FLG(0x1038, 0x2232, /* SteelSeries Arctis Nova 5 */
+                  QUIRK_FLAG_MIXER_GET_CUR_BROKEN),
        DEVICE_FLG(0x1101, 0x0003, /* Audioengine D1 */
                   QUIRK_FLAG_GET_SAMPLE_RATE),
        DEVICE_FLG(0x12d1, 0x3a07, /* HUAWEI USB-C HEADSET */