From 7e8d1a43aedd33237dbc929d6065bc9ca8b09525 Mon Sep 17 00:00:00 2001
From: Alex Deucher <alexander.deucher@amd.com>
Date: Fri, 15 May 2015 11:48:52 -0400
Subject: [PATCH] drm/radeon: take the mode_config mutex when dealing with hpds
 (v2)

commit 39fa10f7e21574a70cecf1fed0f9b36535aa68a0 upstream.

Since we are messing with state in the worker.

v2: drop the changes in the mst worker

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
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