linux-kernel - Re: [PATCH 11/21] asm-generic: don't provide ioremap for CONFIG

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Date:   Mon, 11 Nov 2019 11:29:40 +0100
From:   Arnd Bergmann <arnd@...db.de>
To:     Christoph Hellwig <hch@....de>
Cc:     Guo Ren <guoren@...nel.org>, Michal Simek <monstr@...str.eu>,
        Greentime Hu <green.hu@...il.com>,
        Vincent Chen <deanbo422@...il.com>,
        Guan Xuetao <gxt@....edu.cn>,
        "the arch/x86 maintainers" <x86@...nel.org>,
        alpha <linux-alpha@...r.kernel.org>,
        "open list:SYNOPSYS ARC ARCHITECTURE" 
        <linux-snps-arc@...ts.infradead.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        "open list:QUALCOMM HEXAGON..." <linux-hexagon@...r.kernel.org>,
        linux-ia64@...r.kernel.org,
        linux-m68k <linux-m68k@...ts.linux-m68k.org>,
        linux-mips@...r.kernel.org,
        "moderated list:NIOS2 ARCHITECTURE" 
        <nios2-dev@...ts.rocketboards.org>, openrisc@...ts.librecores.org,
        Parisc List <linux-parisc@...r.kernel.org>,
        linux-riscv@...ts.infradead.org,
        linux-s390 <linux-s390@...r.kernel.org>,
        Linux-sh list <linux-sh@...r.kernel.org>,
        sparclinux <sparclinux@...r.kernel.org>,
        linux-xtensa@...ux-xtensa.org,
        linux-mtd <linux-mtd@...ts.infradead.org>,
        linux-arch <linux-arch@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 11/21] asm-generic: don't provide ioremap for CONFIG_MMU

On Tue, Oct 29, 2019 at 7:49 AM Christoph Hellwig <hch@....de> wrote:
>
> All MMU-enabled ports have a non-trivial ioremap and should thus provide
> the prototype for their implementation instead of providing a generic
> one unless a different symbol is not defined.  Note that this only
> affects sparc32 nds32 as all others do provide their own version.
>
> Also update the kerneldoc comments in asm-generic/io.h to explain the
> situation around the default ioremap* implementations correctly.
>
> Signed-off-by: Christoph Hellwig <hch@....de>

Reviewed-by: Arnd Bergmann <arnd@...db.de>