Re: [PATCH V3] amdgpu: remove unnecessary condition check

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Am 21.04.20 um 10:03 schrieb Bernard Zhao:
There is no need to if check again, maybe we could merge
into the above else branch.

Signed-off-by: Bernard Zhao <bernard@xxxxxxxx>

Changes since V1:
*commit message improve
*code style refactoring

Changes since V2:
*code style adjust

Link for V1:
*https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Flore.kernel.org%2Fpatchwork%2Fpatch%2F1226587%2F&amp;data=02%7C01%7Cchristian.koenig%40amd.com%7C0b8fffafb715474289b208d7e5ca7f6c%7C3dd8961fe4884e608e11a82d994e183d%7C0%7C0%7C637230530201280350&amp;sdata=Sewv5ESX%2B0B4DbFbE03uM5sifrEcmJllC8pt7J42I7M%3D&amp;reserved=0
---
  .../gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c   | 18 +++++++-----------
  1 file changed, 7 insertions(+), 11 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
index 9dff792c9290..5424bd921a7b 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
@@ -660,13 +660,12 @@ static int reserve_bo_and_vm(struct kgd_mem *mem,
ret = ttm_eu_reserve_buffers(&ctx->ticket, &ctx->list,
  				     false, &ctx->duplicates);
-	if (!ret)
-		ctx->reserved = true;
-	else {
-		pr_err("Failed to reserve buffers in ttm\n");
+	if (ret) {
+		pr_err("Failed to reserve buffers in ttm.\n");
  		kfree(ctx->vm_pd);
  		ctx->vm_pd = NULL;
-	}
+	} else
+		ctx->reserved = true;

That is still not correct coding style. In general when one branch of an if/else uses {} the other one should use it as well.

But I agree with Felix that this change looks rather superfluous to me as well.

Regards,
Christian.

return ret;
  }
@@ -733,15 +732,12 @@ static int reserve_bo_and_cond_vms(struct kgd_mem *mem,
ret = ttm_eu_reserve_buffers(&ctx->ticket, &ctx->list,
  				     false, &ctx->duplicates);
-	if (!ret)
-		ctx->reserved = true;
-	else
-		pr_err("Failed to reserve buffers in ttm.\n");
-
  	if (ret) {
+		pr_err("Failed to reserve buffers in ttm.\n");
  		kfree(ctx->vm_pd);
  		ctx->vm_pd = NULL;
-	}
+	} else
+		ctx->reserved = true;
return ret;
  }

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