linux-kernel - Re: [PATCH -next] RISC-V: KVM: fix boolreturn.cocci warnings

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Date:   Sat, 30 Oct 2021 16:14:17 +0530
From:   Anup Patel <anup@...infault.org>
To:     Bixuan Cui <cuibixuan@...ux.alibaba.com>
Cc:     KVM General <kvm@...r.kernel.org>, kvm-riscv@...ts.infradead.org,
        linux-riscv <linux-riscv@...ts.infradead.or>,
        "linux-kernel@...r.kernel.org List" <linux-kernel@...r.kernel.org>,
        Anup Patel <anup.patel@....com>,
        Atish Patra <atish.patra@....com>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>
Subject: Re: [PATCH -next] RISC-V: KVM: fix boolreturn.cocci warnings

On Wed, Oct 27, 2021 at 12:51 PM Bixuan Cui <cuibixuan@...ux.alibaba.com> wrote:
>
> Fix boolreturn.cocci warnings:
> ./arch/riscv/kvm/mmu.c:603:9-10: WARNING: return of 0/1 in function
> 'kvm_age_gfn' with return type bool
> ./arch/riscv/kvm/mmu.c:582:9-10: WARNING: return of 0/1 in function
> 'kvm_set_spte_gfn' with return type bool
> ./arch/riscv/kvm/mmu.c:621:9-10: WARNING: return of 0/1 in function
> 'kvm_test_age_gfn' with return type bool
> ./arch/riscv/kvm/mmu.c:568:9-10: WARNING: return of 0/1 in function
> 'kvm_unmap_gfn_range' with return type bool
>
> Signed-off-by: Bixuan Cui <cuibixuan@...ux.alibaba.com>

Looks good to me.

Applied to riscv_kvm_next, Thanks!

Regards,
Anup

> ---
>  arch/riscv/kvm/mmu.c | 18 +++++++++---------
>  1 file changed, 9 insertions(+), 9 deletions(-)
>
> diff --git a/arch/riscv/kvm/mmu.c b/arch/riscv/kvm/mmu.c
> index 3a00c2d..d81bae8 100644
> --- a/arch/riscv/kvm/mmu.c
> +++ b/arch/riscv/kvm/mmu.c
> @@ -565,12 +565,12 @@ int kvm_arch_prepare_memory_region(struct kvm *kvm,
>  bool kvm_unmap_gfn_range(struct kvm *kvm, struct kvm_gfn_range *range)
>  {
>         if (!kvm->arch.pgd)
> -               return 0;
> +               return false;
>
>         stage2_unmap_range(kvm, range->start << PAGE_SHIFT,
>                            (range->end - range->start) << PAGE_SHIFT,
>                            range->may_block);
> -       return 0;
> +       return false;
>  }
>
>  bool kvm_set_spte_gfn(struct kvm *kvm, struct kvm_gfn_range *range)
> @@ -579,7 +579,7 @@ bool kvm_set_spte_gfn(struct kvm *kvm, struct kvm_gfn_range *range)
>         kvm_pfn_t pfn = pte_pfn(range->pte);
>
>         if (!kvm->arch.pgd)
> -               return 0;
> +               return false;
>
>         WARN_ON(range->end - range->start != 1);
>
> @@ -587,10 +587,10 @@ bool kvm_set_spte_gfn(struct kvm *kvm, struct kvm_gfn_range *range)
>                               __pfn_to_phys(pfn), PAGE_SIZE, true, true);
>         if (ret) {
>                 kvm_debug("Failed to map stage2 page (error %d)\n", ret);
> -               return 1;
> +               return true;
>         }
>
> -       return 0;
> +       return false;
>  }
>
>  bool kvm_age_gfn(struct kvm *kvm, struct kvm_gfn_range *range)
> @@ -600,13 +600,13 @@ bool kvm_age_gfn(struct kvm *kvm, struct kvm_gfn_range *range)
>         u64 size = (range->end - range->start) << PAGE_SHIFT;
>
>         if (!kvm->arch.pgd)
> -               return 0;
> +               return false;
>
>         WARN_ON(size != PAGE_SIZE && size != PMD_SIZE && size != PGDIR_SIZE);
>
>         if (!stage2_get_leaf_entry(kvm, range->start << PAGE_SHIFT,
>                                    &ptep, &ptep_level))
> -               return 0;
> +               return false;
>
>         return ptep_test_and_clear_young(NULL, 0, ptep);
>  }
> @@ -618,13 +618,13 @@ bool kvm_test_age_gfn(struct kvm *kvm, struct kvm_gfn_range *range)
>         u64 size = (range->end - range->start) << PAGE_SHIFT;
>
>         if (!kvm->arch.pgd)
> -               return 0;
> +               return false;
>
>         WARN_ON(size != PAGE_SIZE && size != PMD_SIZE && size != PGDIR_SIZE);
>
>         if (!stage2_get_leaf_entry(kvm, range->start << PAGE_SHIFT,
>                                    &ptep, &ptep_level))
> -               return 0;
> +               return false;
>
>         return pte_young(*ptep);
>  }
> --
> 1.8.3.1
>
>
> --
> kvm-riscv mailing list
> kvm-riscv@...ts.infradead.org
> http://lists.infradead.org/mailman/listinfo/kvm-riscv

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