From 0cb4190d1a8526980158b520fd0216aacf00afd8 Mon Sep 17 00:00:00 2001
From: Eldad Zack <eldad@fogrefinery.com>
Date: Wed, 28 Nov 2012 23:55:41 +0100
Subject: [PATCH] --- yaml --- r: 342633 b: refs/heads/master c:
 ca10a7ebdff1c862ca1ef1d7bd2c6810e3c87e17 h: refs/heads/master i:   342631:
 07a3c363b7262f38487d9b4d55d2757248f1c086 v: v3

---
 [refs]                |  2 +-
 trunk/sound/usb/pcm.c | 13 +++++++++++++
 2 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/[refs] b/[refs]
index 7741f00b0c58..ee578cf012d3 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 09d8e3a71d2bdde11b258a62043cb784891e6ad3
+refs/heads/master: ca10a7ebdff1c862ca1ef1d7bd2c6810e3c87e17
diff --git a/trunk/sound/usb/pcm.c b/trunk/sound/usb/pcm.c
index f488a493a98e..769821c30031 100644
--- a/trunk/sound/usb/pcm.c
+++ b/trunk/sound/usb/pcm.c
@@ -362,6 +362,19 @@ static int set_format(struct snd_usb_substream *subs, struct audioformat *fmt)
 	attr = fmt->ep_attr & USB_ENDPOINT_SYNCTYPE;
 
 	switch (subs->stream->chip->usb_id) {
+	case USB_ID(0x0763, 0x2030): /* M-Audio Fast Track C400 */
+		if (is_playback) {
+			implicit_fb = 1;
+			ep = 0x81;
+			iface = usb_ifnum_to_if(dev, 3);
+
+			if (!iface || iface->num_altsetting == 0)
+				return -EINVAL;
+
+			alts = &iface->altsetting[1];
+			goto add_sync_ep;
+		}
+		break;
 	case USB_ID(0x0763, 0x2080): /* M-Audio FastTrack Ultra */
 	case USB_ID(0x0763, 0x2081):
 		if (is_playback) {