From: Christian König <christian.koenig@amd.com>
Date: Wed, 30 Jul 2014 19:04:55 +0000 (+0200)
Subject: drm/radeon: remove taking mclk_lock from radeon_bo_unref
X-Git-Tag: v3.17-rc1~82^2~6^2~11
X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=e7e31600d3e2f8b7726b0521149fc55c62a90467;p=linux.git

drm/radeon: remove taking mclk_lock from radeon_bo_unref

It's causing lockdep warnings and why should
we access the memory that is freed up?

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

diff --git a/drivers/gpu/drm/radeon/radeon_object.c b/drivers/gpu/drm/radeon/radeon_object.c
index 78b74c88d145..9505766e46dd 100644
--- a/drivers/gpu/drm/radeon/radeon_object.c
+++ b/drivers/gpu/drm/radeon/radeon_object.c
@@ -245,9 +245,7 @@ void radeon_bo_unref(struct radeon_bo **bo)
 		return;
 	rdev = (*bo)->rdev;
 	tbo = &((*bo)->tbo);
-	down_read(&rdev->pm.mclk_lock);
 	ttm_bo_unref(&tbo);
-	up_read(&rdev->pm.mclk_lock);
 	if (tbo == NULL)
 		*bo = NULL;
 }