From e3e35f750fff74e701c8913fd7dd714e37a848cd Mon Sep 17 00:00:00 2001
From: David Henningsson <david.henningsson@canonical.com>
Date: Tue, 5 Nov 2013 04:41:07 +0100
Subject: [PATCH] ALSA: usb - For class 2 devices, use channel map from
 altsettings

The channel config from the streaming descriptor is probably a
better indicator of the channel map than the input terminal.
Use the input terminal's channel map as fallback only.

Signed-off-by: David Henningsson <david.henningsson@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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