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Date: Mon, 26 Mar 2012 16:31:00 +0200
From: Stanislaw Gruszka <sgruszka@redhat.com>
To: J Freyensee <james_p_freyensee@linux.intel.com>
Cc: linux-kernel@vger.kernel.org
Subject: Null pointer dereference in pti_exit()
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Hi

We have this bug report:
https://bugzilla.redhat.com/show_bug.cgi?id=783561

Crash when someone load module and do not have actual pti device.
Then misc_deregister(&pti_char_driver) called from pti_exit() will be
done without misc_register(&pti_char_driver), which is called from
pti_pci_probe().

It is not super critical issue since if somebody who do not have
pti device have no reason to load modules, but I guess would be
good to fix this.

Thanks
Stanislaw