[PATCH] drm/amdgpu: remove redundant memset

Philip Yang Philip.Yang at amd.com
Wed Aug 29 15:17:44 UTC 2018


kvmalloc_array uses __GFP_ZERO flag ensures that the returned address
is zeroed already, memset it to zero again afterwards is unnecessary,
and in this case buggy because we only clear the first entry.

Change-Id: If94a59d3cbf2690dd2a1e2add71bc393df6a9686
Signed-off-by: Philip Yang <Philip.Yang at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
index 153c9be..33d9ce2 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
@@ -540,7 +540,6 @@ static int amdgpu_vm_alloc_levels(struct amdgpu_device *adev,
 						   GFP_KERNEL | __GFP_ZERO);
 		if (!parent->entries)
 			return -ENOMEM;
-		memset(parent->entries, 0 , sizeof(struct amdgpu_vm_pt));
 	}
 
 	from = saddr >> shift;
-- 
2.7.4



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