[PATCH 2/2] ALSA: usb-audio: add implicit fb quirk for Axe-Fx III

[Alberto Aguirre <albaguirre@gmail.com>]

The Axe-Fx III implicit feedback end point and the data sink endpoint
are in different interface descriptors. Add quirk to ensure a sync
endpoint is properly configured.

Signed-off-by: Alberto Aguirre <albaguirre@gmail.com>
---
 sound/usb/pcm.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/sound/usb/pcm.c b/sound/usb/pcm.c
index c0746cc20ac4..ad39b3cca247 100644
--- a/sound/usb/pcm.c
+++ b/sound/usb/pcm.c
@@ -342,6 +342,10 @@ static int set_sync_ep_implicit_fb_quirk(struct snd_usb_substream *subs,
 		ep = 0x86;
 		ifnum = 2;
 		goto add_sync_ep_from_ifnum;
+	case USB_ID(0x2466, 0x8010): /* Fractal Audio Axe-Fx III */
+		ep = 0x81;
+		ifnum = 2;
+		goto add_sync_ep_from_ifnum;
 	case USB_ID(0x1397, 0x0002): /* Behringer UFX1204 */
 		ep = 0x81;
 		ifnum = 1;
-- 
2.14.1