From 0a5b7b0bd97a212f5d8d28c5011b04a45dfb006e Mon Sep 17 00:00:00 2001
From: Alex Deucher <alexander.deucher@amd.com>
Date: Tue, 3 Sep 2013 19:00:09 -0400
Subject: [PATCH] drm/radeon: add spinlocks for indirect register accesss

This adds spinlocks to protect access to other
indirect register apertures.  These indirect spaces are
used pretty infrequently and we haven't had an reported
problems, but better safe than sorry.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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