From: Peter Hurley <peter@hurleysoftware.com>
Date: Wed, 5 Nov 2014 17:12:53 +0000 (-0500)
Subject: tty: Don't take tty_mutex for tty count changes
X-Git-Tag: omap-for-v3.19/fixes-rc1~86^2~184
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0911261d4cb614ef6900cd2906be2c61a87f43ff;p=pandora-kernel.git

tty: Don't take tty_mutex for tty count changes

Holding tty_mutex is no longer required to serialize changes to
the tty_count or to prevent concurrent opens of closing ttys;
tty_lock() is sufficient.

Reviewed-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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