[PATCH AUTOSEL 6.18] ALSA: usb-audio: Fix quirk flags for NeuralDSP Quad Cortex

Sasha Levin
2026-04-20T13:27:26Z

From: Phil Willoughby <willerz@gmail.com>

[ Upstream commit bc5b4e5ae1a67700a618328217b6a3bd0f296e97 ]

The NeuralDSP Quad Cortex does not support DSD playback. We need
this product-specific entry with zero quirks because otherwise it
falls through to the vendor-specific entry which marks it as
supporting DSD playback.

Cc: Yue Wang <yuleopen@gmail.com>
Cc: Jaroslav Kysela <perex@perex.cz>
Cc: Takashi Iwai <tiwai@suse.com>
Signed-off-by: Phil Willoughby <willerz@gmail.com>
Link: https://patch.msgid.link/20260328080921.3310-1-willerz@gmail.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---

LLM Generated explanations, may be completely bogus:

Error: Failed to generate final synthesis

sound/usb/quirks.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c
index 9f585dbc770cb..a2c039a1b3cd6 100644
--- a/sound/usb/quirks.c
+++ b/sound/usb/quirks.c
@@ -2296,6 +2296,8 @@ static const struct usb_audio_quirk_flags_table quirk_flags_table[] = {
QUIRK_FLAG_PLAYBACK_FIRST | QUIRK_FLAG_GENERIC_IMPLICIT_FB),
DEVICE_FLG(0x13e5, 0x0001, /* Serato Phono */
QUIRK_FLAG_IGNORE_CTL_ERROR),
+ DEVICE_FLG(0x152a, 0x880a, /* NeuralDSP Quad Cortex */
+ 0), /* Doesn't have the vendor quirk which would otherwise apply */
DEVICE_FLG(0x154e, 0x1002, /* Denon DCD-1500RE */
QUIRK_FLAG_ITF_USB_DSD_DAC | QUIRK_FLAG_CTL_MSG_DELAY),
DEVICE_FLG(0x154e, 0x1003, /* Denon DA-300USB */
--
2.53.0