[PATCH v2] ALSA: usb-audio: Fix quirk flags for NeuralDSP Quad Cortex

Phil Willoughby
2026-03-28T08:09:26Z

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>
---
Improve commit message.

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

diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c
index 4955cbe3b60a..67e812bd9113 100644
--- a/sound/usb/quirks.c
+++ b/sound/usb/quirks.c
@@ -2361,6 +2361,8 @@ 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