From: Jiri Slaby <jslaby@suse.cz>
Date: Thu, 18 Oct 2012 20:26:32 +0000 (+0200)
Subject: TTY: vt, fix paste_selection ldisc handling
X-Git-Tag: omap-for-v3.8/cleanup-headers-serial-take2-signed~23
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7ee00fdb16418dd5078ec73e4a631c278a366501;p=pandora-kernel.git

TTY: vt, fix paste_selection ldisc handling

There used to be a single tty_ldisc_ref_wait. But then, when a
big-tty-mutex (BTM) was introduced, it has to be tty_ldisc_ref +
tty_unlock + tty_ldisc_ref_wait + tty_lock. Later, BTM was removed
from that path and tty_ldisc_ref + tty_ldisc_ref_wait remained there.
But it makes no sense now. So leave there only tty_ldisc_ref_wait.

And when we have a reference to an ldisc, actually use it in the loop.
Otherwise it may be racy.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Acked-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

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