From 831719d62f692e28699a7acd7b441c6f0c01b6f7 Mon Sep 17 00:00:00 2001
From: Alex Deucher <alexdeucher@gmail.com>
Date: Thu, 8 May 2014 10:58:04 -0400
Subject: [PATCH] drm/radeon: add a i2c bus mutex
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The i2c and aux buses use the same pads so add
a mutex to protect access to the pads.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
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