From: Peter Hurley <peter@hurleysoftware.com>
Date: Thu, 19 Sep 2013 00:42:39 +0000 (-0400)
Subject: tty: Prevent tty_port destruction if tty not released
X-Git-Tag: omap-for-v3.13/fixes-for-merge-window-take2~63^2~82
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e3bfea23a62dccfd12875a6cc24fa5c77e8a3c07;p=pandora-kernel.git

tty: Prevent tty_port destruction if tty not released

If the tty driver mistakenly drops the last port reference
before the tty has been released, issue a diagnostic and
abort the port destruction.

This will leak memory and may zombify the port, but might
otherwise keep the machine in runnable state.

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