From: Peter Hurley <peter@hurleysoftware.com>
Date: Sat, 15 Jun 2013 11:04:47 +0000 (-0400)
Subject: tty: Add lock/unlock ldisc pair functions
X-Git-Tag: v3.12-rc1~182^2~226
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d2c438905f9f718b3d9f5d89ce163fc22bd33995;p=pandora-kernel.git

tty: Add lock/unlock ldisc pair functions

Just as the tty pair must be locked in a stable sequence
(ie, independent of which is consider the 'other' tty), so must
the ldisc pair be locked in a stable sequence as well.

Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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