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 78b74c8..9505766 100644 (file)
--- 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;
 }