linux-kernel - Re: [PATCH v2 5/6] RISC-V: Do no continue isa string parsing without correct XLEN

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Date:   Fri, 11 Feb 2022 13:52:17 +0100
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     Andreas Schwab <schwab@...ux-m68k.org>
Cc:     Atish Patra <atishp@...osinc.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Albert Ou <aou@...s.berkeley.edu>,
        Atish Patra <atishp@...shpatra.org>,
        Anup Patel <anup@...infault.org>,
        Damien Le Moal <damien.lemoal@....com>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>, Jisheng Zhang <jszhang@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>,
        linux-riscv <linux-riscv@...ts.infradead.org>,
        Palmer Dabbelt <palmer@...belt.com>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Rob Herring <robh+dt@...nel.org>
Subject: Re: [PATCH v2 5/6] RISC-V: Do no continue isa string parsing without
 correct XLEN

Hi Andreas,

On Thu, Feb 10, 2022 at 11:00 PM Andreas Schwab <schwab@...ux-m68k.org> wrote:
> On Feb 10 2022, Atish Patra wrote:
> > diff --git a/arch/riscv/kernel/cpufeature.c b/arch/riscv/kernel/cpufeature.c
> > index 469b9739faf7..cca579bae8a0 100644
> > --- a/arch/riscv/kernel/cpufeature.c
> > +++ b/arch/riscv/kernel/cpufeature.c
> > @@ -84,6 +84,7 @@ void __init riscv_fill_hwcap(void)
> >       for_each_of_cpu_node(node) {
> >               unsigned long this_hwcap = 0;
> >               uint64_t this_isa = 0;
> > +             char *temp;
> >
> >               if (riscv_of_processor_hartid(node) < 0)
> >                       continue;
> > @@ -93,6 +94,7 @@ void __init riscv_fill_hwcap(void)
> >                       continue;
> >               }
> >
> > +             temp = (char *)isa;
>
> There should be no need for this cast.

Indeed, but only if "temp" is changed to "const char *".

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds