The patch below does not apply to the 5.3-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to stable@vger.kernel.org.
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
From e2995b95a914bbc6b5352be27d5d5f33ec802d2c Mon Sep 17 00:00:00 2001
From: Justin Song flyingecar@gmail.com Date: Thu, 24 Oct 2019 12:27:14 +0200 Subject: [PATCH] ALSA: usb-audio: Add DSD support for Gustard U16/X26 USB Interface
This patch adds native DSD support for Gustard U16/X26 USB Interface. Tested using VID and fp->dsd_raw method.
Signed-off-by: Justin Song flyingecar@gmail.com Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/CA+9XP1ipsFn+r3bCBKRinQv-JrJ+EHOGBdZWZoMwxFv0R8Y1M... Signed-off-by: Takashi Iwai tiwai@suse.de
diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c index fbfde996fee7..0bbe1201a6ac 100644 --- a/sound/usb/quirks.c +++ b/sound/usb/quirks.c @@ -1657,6 +1657,7 @@ u64 snd_usb_interface_dsd_format_quirks(struct snd_usb_audio *chip, case 0x23ba: /* Playback Designs */ case 0x25ce: /* Mytek devices */ case 0x278b: /* Rotel? */ + case 0x292b: /* Gustard/Ess based devices */ case 0x2ab6: /* T+A devices */ case 0x3842: /* EVGA */ case 0xc502: /* HiBy devices */