From: Peter Hurley <peter@hurleysoftware.com>
Date: Mon, 11 Mar 2013 20:44:26 +0000 (-0400)
Subject: tty: Fix ldisc halt sequence on hangup
X-Git-Tag: omap-for-v3.10/dt-fixes-for-merge-window~136^2~70
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=76bc35e78fdf1065ffa2bb62fabe3e8423d378c8;p=pandora-kernel.git

tty: Fix ldisc halt sequence on hangup

Flip buffer work cannot be cancelled until all outstanding ldisc
references have been released. Convert the ldisc ref wait into
a full ldisc halt with buffer work cancellation.

Note that the legacy mutex is not held while cancelling.

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