From: Pan Bian Date: Wed, 6 Nov 2019 11:35:43 +0000 (+0800) Subject: drm/amdgpu: fix double reference dropping X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=365f7f8db8a48c8c7ef63a1cc835f200e578757b;p=linux.git drm/amdgpu: fix double reference dropping 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 --- diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_benchmark.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_benchmark.c index 649e68c4479bb..d1495e1c92894 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; }