linux-kernel - Re: [PATCH 4/4] sh: machvec: remove custom ioport

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Message-ID: <456ea951a34b3c599d990eddd15fee490fbaee37.camel@physik.fu-berlin.de>
Date:   Fri, 08 Sep 2023 12:21:42 +0200
From:   John Paul Adrian Glaubitz <glaubitz@...sik.fu-berlin.de>
To:     Geert Uytterhoeven <geert@...ux-m68k.org>
Cc:     Arnd Bergmann <arnd@...nel.org>, linux-sh@...r.kernel.org,
        Rich Felker <dalias@...c.org>,
        Yoshinori Sato <ysato@...rs.sourceforge.jp>,
        linux-kernel@...r.kernel.org, Arnd Bergmann <arnd@...db.de>
Subject: Re: [PATCH 4/4] sh: machvec: remove custom ioport_{un,}map()

Hi Geert!

On Fri, 2023-09-08 at 12:20 +0200, Geert Uytterhoeven wrote:
> > Why aren't you removing the function ioport_unmap(void __iomem *addr) completely
> > and just turn it into stub? Is it still referenced somewhere?
> 
> Because architectures are supposed to implement it (there is no
> __weak default).
> 
> An alternative would be to provide a dummy static inline, like
> e.g. m68k does:
> 
> arch/m68k/include/asm/kmap.h:#define ioport_unmap ioport_unmap
> arch/m68k/include/asm/kmap.h:static inline void ioport_unmap(void __iomem *p)
> arch/m68k/include/asm/kmap.h-{
> arch/m68k/include/asm/kmap.h-}

OK, that explains it. Thanks!

Adrian

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