[PATCH AUTOSEL 6.18] ALSA: usb-audio: Add delay quirk for iBasso DC-Elite

[Sasha Levin]

From: Lianqin Hu <hulianqin@xxxxxxxx>

[ Upstream commit 5caf27a2bf7f86f92f03e851d252901b64ed498c ]

Audio control requests that sets sampling frequency sometimes fail on
this card. Adding delay between control messages eliminates that problem.

usb 1-1: New USB device found, idVendor=2fc6, idProduct=f0b5
usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
usb 1-1: Product: iBasso DC-Elite
usb 1-1: Manufacturer: iBasso
usb 1-1: SerialNumber: CTUA171130B

Signed-off-by: Lianqin Hu <hulianqin@xxxxxxxx>
Signed-off-by: Takashi Iwai <tiwai@xxxxxxx>
Link: https://patch.msgid.link/TYUPR06MB6217D8FF419F24378196FCEFD2FA2@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---

LLM Generated explanations, may be completely bogus:

The background checks finished and match the earlier analysis:

- **Upstream commit** `5caf27a2bf7f8` (“Add delay quirk for iBasso DC-
  Elite”) is on `master` only.
- It is **not** in `stable/linux-6.18.y` (no DC-Elite entry in that
  branch’s history).
- Merge-base with stable is `7d0a66e4bb908`.

So the quirk still needs to be backported to 6.18.y — a 2-line insert
between the existing Moonriver2 Ti and DC07 Pro entries in
`sound/usb/quirks.c`. Verdict remains **YES**.

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

diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c
index c5b06374044da..a1bdb77843448 100644
--- a/sound/usb/quirks.c
+++ b/sound/usb/quirks.c
@@ -2402,6 +2402,8 @@ static const struct usb_audio_quirk_flags_table quirk_flags_table[] = {
 		   QUIRK_FLAG_MIXER_PLAYBACK_MIN_MUTE),
 	DEVICE_FLG(0x2fc6, 0xf06b, /* MOONDROP Moonriver2 Ti */
 		   QUIRK_FLAG_CTL_MSG_DELAY),
+	DEVICE_FLG(0x2fc6, 0xf0b5, /* iBasso DC-Elite */
+		   QUIRK_FLAG_CTL_MSG_DELAY_1M),
 	DEVICE_FLG(0x2fc6, 0xf0b7, /* iBasso DC07 Pro */
 		   QUIRK_FLAG_CTL_MSG_DELAY_1M),
 	DEVICE_FLG(0x30be, 0x0101, /* Schiit Hel */
-- 
2.53.0