linux-kernel - Re: [PATCH v2 2/5] ACPI / boot: Correct address space of __acpi_map

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Message-ID: <CAMuHMdVSzWRsEmZRpkLN8RdnwrudyrbQiYT-8g3-BwxiSxrk7A@mail.gmail.com>
Date:   Tue, 18 Jul 2017 11:03:18 +0200
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc:     "Rafael J . Wysocki" <rjw@...ysocki.net>,
        Linux PM list <linux-pm@...r.kernel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        "H . Peter Anvin" <hpa@...or.com>,
        "the arch/x86 maintainers" <x86@...nel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Hanjun Guo <guohanjun@...wei.com>,
        ACPI Devel Maling List <linux-acpi@...r.kernel.org>
Subject: Re: [PATCH v2 2/5] ACPI / boot: Correct address space of __acpi_map_table()

Hi Andy,

On Mon, Jul 17, 2017 at 12:24 PM, Andy Shevchenko
<andriy.shevchenko@...ux.intel.com> wrote:
> Sparse complains about wrong address space used in __acpi_map_table()
> and in __acpi_unmap_table().
>
> arch/x86/kernel/acpi/boot.c:127:29: warning: incorrect type in return expression (different address spaces)
> arch/x86/kernel/acpi/boot.c:127:29:    expected char *
> arch/x86/kernel/acpi/boot.c:127:29:    got void [noderef] <asn:2>*
> arch/x86/kernel/acpi/boot.c:135:23: warning: incorrect type in argument 1 (different address spaces)
> arch/x86/kernel/acpi/boot.c:135:23:    expected void [noderef] <asn:2>*addr
> arch/x86/kernel/acpi/boot.c:135:23:    got char *map
>
> Correct address space to be in align of type of returned and passed
> parameter.
>
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
> ---
>  arch/arm64/kernel/acpi.c    | 4 ++--

Thanks for the update!
I can confirm this fixes the arm64 build for me.

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