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

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

[Phil Willoughby]

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

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

[Takashi Iwai]

On Sat, 28 Mar 2026 09:07:34 +0100,
Phil Willoughby wrote:
> 
> 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>

Applied now.  Thanks.


Takashi