From db702a7af6c85d94ff32b6110b3646180f93f086 Mon Sep 17 00:00:00 2001
From: Mauro Carvalho Chehab <mchehab@redhat.com>
Date: Tue, 10 Jan 2012 09:33:47 -0200
Subject: [PATCH] [media] cx231xx: cx231xx_devused is racy

cx231xx_devused is racy. Re-implement it in a proper way,
to remove the risk of mangling it.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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