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-rw-r--r--drivers/gpu/drm/amd/amdgpu/amdgpu_benchmark.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_benchmark.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_benchmark.c
index 1cbba9803d31..98ccd7ab9e9a 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_benchmark.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_benchmark.c
@@ -35,6 +35,7 @@ static int amdgpu_benchmark_do_move(struct amdgpu_device *adev, unsigned size,
struct dma_fence *fence;
int i, r;
+ mutex_lock(&adev->mman.default_entity.lock);
stime = ktime_get();
for (i = 0; i < n; i++) {
r = amdgpu_copy_buffer(adev, &adev->mman.default_entity,
@@ -47,6 +48,7 @@ static int amdgpu_benchmark_do_move(struct amdgpu_device *adev, unsigned size,
if (r)
goto exit_do_move;
}
+ mutex_unlock(&adev->mman.default_entity.lock);
exit_do_move:
etime = ktime_get();