From: Alan Cox <alan@linux.intel.com>
Date: Mon, 14 May 2012 13:51:22 +0000 (+0100)
Subject: tty: Allow uart_register/unregister/register
X-Git-Tag: v3.5-rc1~146^2~7
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1e66cded334e6cea596c72f6f650eec351b1e959;p=pandora-kernel.git

tty: Allow uart_register/unregister/register

This is legitimate but because we don't clear the drv->state pointer in the
unregister code causes a bogus BUG().

Resolves-bug: https://bugzilla.kernel.org/show_bug.cgi?id=42880
Signed-off-by: Alan Cox <alan@linux.intel.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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