From 365f7f8db8a48c8c7ef63a1cc835f200e578757b Mon Sep 17 00:00:00 2001 From: Pan Bian Date: Wed, 6 Nov 2019 19:35:43 +0800 Subject: [PATCH] drm/amdgpu: fix double reference dropping MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit 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. Reviewed-by: Christian König Signed-off-by: Pan Bian Signed-off-by: Alex Deucher --- 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; } -- 2.39.5