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SubjectRe: [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@vivo.com>
>
> 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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