From: André Goddard Rosa <andre.goddard@gmail.com>
Date: Sun, 25 Oct 2009 13:16:32 +0000 (-0200)
Subject: serial: fix NULL pointer dereference
X-Git-Tag: v2.6.33-rc1~310^2~40
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9e845abfc8a8973373821aa05302794fd254514b;p=pandora-kernel.git

serial: fix NULL pointer dereference

If kzalloc() or alloc_tty_driver() fails, we call:
    put_tty_driver(normal = NULL).

Then:
    put_tty_driver -> tty_driver_kref_put -> kref_put(&NULL->kref, ...)

Signed-off-by: André Goddard Rosa <andre.goddard@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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