Am 06.11.19 um 12:35 schrieb Pan Bian:
> The reference to object fence is dropped at the end of the loop.
> However, it is dropped again outside the loop. The reference can be
> dropped immediately after calling dma_fence_wait() in the loop and
> thus the dropping operation outside the loop can be removed.
>
> Signed-off-by: Pan Bian <bianpan2016@xxxxxxx>
Reviewed-by: Christian König <christian.koenig@xxxxxxx>
> ---
> v2: fix the bug in a more concise way
> ---
> drivers/gpu/drm/amd/amdgpu/amdgpu_benchmark.c | 6 ++----
> 1 file changed, 2 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_benchmark.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_benchmark.c
> index 649e68c4479b..d1495e1c9289 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_benchmark.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_benchmark.c
> @@ -33,7 +33,7 @@ static int amdgpu_benchmark_do_move(struct amdgpu_device *adev, unsigned size,
> {
> unsigned long start_jiffies;
> unsigned long end_jiffies;
> - struct dma_fence *fence = NULL;
> + struct dma_fence *fence;
> int i, r;
>
> start_jiffies = jiffies;
> @@ -44,16 +44,14 @@ static int amdgpu_benchmark_do_move(struct amdgpu_device *adev, unsigned size,
> if (r)
> goto exit_do_move;
> r = dma_fence_wait(fence, false);
> + dma_fence_put(fence);
> if (r)
> goto exit_do_move;
> - dma_fence_put(fence);
> }
> end_jiffies = jiffies;
> r = jiffies_to_msecs(end_jiffies - start_jiffies);
>
> exit_do_move:
> - if (fence)
> - dma_fence_put(fence);
> return r;
> }
>
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