From: Ming Lei <tom.leiming@gmail.com>
Date: Tue, 4 Jan 2011 12:21:32 +0000 (+0800)
Subject: usb: otg: nop: fix oops triggered by otg_register_notifier
X-Git-Tag: v2.6.38-rc3~7^2~21
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=20831ad23978d0543b0b23128621b6d8ee7757f1;p=pandora-kernel.git

usb: otg: nop: fix oops triggered by otg_register_notifier

This patch adds BLOCKING_INIT_NOTIFIER_HEAD in nop_usb_xceiv_probe,
so that we can avoid oops caused by uninitialized
nop->otg.notifier.rwsem which will be touched in otg_register_notifier
path.

Reported-by: Gupta, Ajay Kumar <ajay.gupta@ti.com>
Tested-by: Gupta, Ajay Kumar <ajay.gupta@ti.com>
Cc: Balbi, Felipe <balbi@ti.com>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Ming Lei <tom.leiming@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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