[PATCH] ALSA: usb-audio: Add quirks for M-Audio Fast Track C400/600

[Takashi Iwai]

M-Audio Fast Track C400 and C600 devices (0763:2030 and 0763:2031,
respectively) seem requiring the explicit setup for the implicit
feedback mode.  This patch adds the quirk entries for those.

BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=214817
Cc: <stable at vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai at suse.de>
---
 sound/usb/implicit.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/sound/usb/implicit.c b/sound/usb/implicit.c
index e1bf1b5da423..f3e8484b3d9c 100644
--- a/sound/usb/implicit.c
+++ b/sound/usb/implicit.c
@@ -47,6 +47,8 @@ struct snd_usb_implicit_fb_match {
 static const struct snd_usb_implicit_fb_match playback_implicit_fb_quirks[] = {
 	/* Fixed EP */
 	/* FIXME: check the availability of generic matching */
+	IMPLICIT_FB_FIXED_DEV(0x0763, 0x2030, 0x81, 3), /* M-Audio Fast Track C400 */
+	IMPLICIT_FB_FIXED_DEV(0x0763, 0x2031, 0x81, 3), /* M-Audio Fast Track C600 */
 	IMPLICIT_FB_FIXED_DEV(0x0763, 0x2080, 0x81, 2), /* M-Audio FastTrack Ultra */
 	IMPLICIT_FB_FIXED_DEV(0x0763, 0x2081, 0x81, 2), /* M-Audio FastTrack Ultra */
 	IMPLICIT_FB_FIXED_DEV(0x2466, 0x8010, 0x81, 2), /* Fractal Audio Axe-Fx III */
-- 
2.35.3