From: Jiri Slaby <jirislaby@gmail.com>
Date: Sun, 6 Sep 2009 21:10:10 +0000 (+0200)
Subject: tty: USB: serial/mct_u232, fix tty refcnt
X-Git-Tag: v2.6.32-rc1~627^2~12
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=054f2346cb0e524cbb678759bfedabfdba4d0100;p=pandora-kernel.git

tty: USB: serial/mct_u232, fix tty refcnt

Stanse found a tty refcnt leak in read_int_callback. In fact
it's handled wrong altogether. tty_port_tty_get can return NULL
and it's not checked in that manner.

Fix that by checking the tty_port_tty_get retval and put tty kref
properly.

http://stanse.fi.muni.cz/

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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