From aee4aa73a1af3176cc3eea5833cae596b4b7dd22 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Christian=20K=C3=B6nig?= <christian.koenig@amd.com>
Date: Tue, 18 Feb 2014 15:24:06 +0100
Subject: [PATCH] drm/radeon: improve ring lockup detection code v2
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Use atomics and jiffies_64, so that we don't need to have the
ring mutex locked any more and avoid wrap arounds.

v2: fix some checkpatch warnings

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