linux-kernel - Re: [PATCH v5 RESEND 01/17] asm-generic/iomap.h: remove ARCH_HAS_IOREMAP

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Message-ID: <CAMuHMdU-bL-khVUN59ku1GwV6i4OC3O9AU1GQU2hfGn+JrsBXg@mail.gmail.com>
Date:   Tue, 16 May 2023 09:07:52 +0200
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     Baoquan He <bhe@...hat.com>
Cc:     linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org,
        linux-mm@...ck.org, arnd@...db.de, christophe.leroy@...roup.eu,
        hch@...radead.org, agordeev@...ux.ibm.com,
        wangkefeng.wang@...wei.com, schnelle@...ux.ibm.com,
        David.Laight@...lab.com, shorne@...il.com, willy@...radead.org,
        deller@....de, loongarch@...ts.linux.dev,
        linux-m68k@...ts.linux-m68k.org, linux-mips@...r.kernel.org,
        linuxppc-dev@...ts.ozlabs.org, x86@...nel.org,
        netdev@...r.kernel.org
Subject: Re: [PATCH v5 RESEND 01/17] asm-generic/iomap.h: remove
 ARCH_HAS_IOREMAP_xx macros

On Mon, May 15, 2023 at 11:14 AM Baoquan He <bhe@...hat.com> wrote:
> Let's use '#define ioremap_xx' and "#ifdef ioremap_xx" instead.
>
> For each architecture to remove defined ARCH_HAS_IOREMAP_xx macros in
> To remove defined ARCH_HAS_IOREMAP_xx macros in <asm/io.h> of each ARCH,
> the ARCH's own ioremap_wc|wt|np definition need be above
> "#include <asm-generic/iomap.h>. Otherwise the redefinition error would
> be seen during compiling. So the relevant adjustments are made to avoid
> compiling error:
>
>   loongarch:
>   - doesn't include <asm-generic/iomap.h>, defining ARCH_HAS_IOREMAP_WC
>     is redundant, so simply remove it.
>
>   m68k:
>   - selected GENERIC_IOMAP, <asm-generic/iomap.h> has been added in
>     <asm-generic/io.h>, and <asm/kmap.h> is included above
>     <asm-generic/iomap.h>, so simply remove ARCH_HAS_IOREMAP_WT defining.
>
>   mips:
>   - move "#include <asm-generic/iomap.h>" below ioremap_wc definition
>     in <asm/io.h>
>
>   powerpc:
>   - remove "#include <asm-generic/iomap.h>" in <asm/io.h> because it's
>     duplicated with the one in <asm-generic/io.h>, let's rely on the
>     latter.
>
>   x86:
>   - selected GENERIC_IOMAP, remove #include <asm-generic/iomap.h> in
>     the middle of <asm/io.h>. Let's rely on <asm-generic/io.h>.
>
> Signed-off-by: Baoquan He <bhe@...hat.com>

>  arch/m68k/include/asm/io_mm.h       | 2 --
>  arch/m68k/include/asm/kmap.h        | 2 --

Acked-by: Geert Uytterhoeven <geert@...ux-m68k.org>

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