From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sun, 23 Dec 2012 20:10:15 +0000 (+0100)
Subject: usb: gadget: add a forward pointer from usb_function to its "instance"
X-Git-Tag: v3.9-rc1~126^2~43^2~25
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0062f6e56f70bd2230ba1ebd1667d1b32a1af3b2;p=pandora-kernel.git

usb: gadget: add a forward pointer from usb_function to its "instance"

We can have multiple usb_functions which origin is the same "instance".
Within one USB configuration there should be only one function of an
instance. This back pointer helps configfs to recoginze to which
instance a given usb_function belongs.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
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