From: Clemens Ladisch <clemens@ladisch.de>
Date: Sun, 3 Feb 2013 21:31:20 +0000 (+0100)
Subject: ALSA: usb-audio: detect implicit feedback on Roland devices
X-Git-Tag: omap-for-v3.11/fixes-for-merge-window~15^2~3^2~6^2~5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ba7c2be114243fa4cfcbc66a81db18e1d55abf4b;p=pandora-kernel.git

ALSA: usb-audio: detect implicit feedback on Roland devices

All the Roland/Edirol/BOSS USB audio devices that need implicit feedback
show this unambiguously in their descriptors, so it might be a good idea
to let the driver detect this.

This should make playback work correctly (at least with Jack) with the
following devices:
- BOSS GT-100
- BOSS JS-8 Jam Station
- Edirol M-16DX
- Roland GAIA SH-01

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
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