[PATCH 6.18 174/309] ALSA: usb-audio: Exclude Scarlett 2i4 1st Gen from SKIP_IFACE_SETUP

Greg Kroah-Hartman
2026-03-31T17:04:06Z

From: Geoffrey D. Bennett <g@b4.vu>

[ Upstream commit 990a8b0732cf899d4a0f847b0a67efeb9a384c82 ]

Same issue that the Scarlett 2i2 1st Gen had:
QUIRK_FLAG_SKIP_IFACE_SETUP causes distorted/flanging audio on the
Scarlett 2i4 1st Gen (1235:800a).

Fixes: 38c322068a26 ("ALSA: usb-audio: Add QUIRK_FLAG_SKIP_IFACE_SETUP")
Reported-by: dcferreira [https://github.com/geoffreybennett/linux-fcp/issues/54]
Signed-off-by: Geoffrey D. Bennett <g@b4.vu>
Link: https://patch.msgid.link/acEkEbftzyNe8W7C@m.b4.vu
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
sound/usb/quirks.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c
index 11823549900f1..45d0e1364dd98 100644
--- a/sound/usb/quirks.c
+++ b/sound/usb/quirks.c
@@ -2423,6 +2423,7 @@ static const struct usb_audio_quirk_flags_table quirk_flags_table[] = {
VENDOR_FLG(0x07fd, /* MOTU */
QUIRK_FLAG_VALIDATE_RATES),
DEVICE_FLG(0x1235, 0x8006, 0), /* Focusrite Scarlett 2i2 1st Gen */
+ DEVICE_FLG(0x1235, 0x800a, 0), /* Focusrite Scarlett 2i4 1st Gen */
VENDOR_FLG(0x1235, /* Focusrite Novation */
QUIRK_FLAG_SKIP_IFACE_SETUP),
VENDOR_FLG(0x1511, /* AURALiC */
--
2.53.0