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Message-Id: <d2f5cdc1-4bff-4f1d-a7b2-38eee6a6a86d@app.fastmail.com>
Date:   Fri, 15 Sep 2023 17:49:34 +0200
From:   "Arnd Bergmann" <arnd@...db.de>
To:     "Geert Uytterhoeven" <geert@...ux-m68k.org>
Cc:     "Arnd Bergmann" <arnd@...nel.org>,
        "John Paul Adrian Glaubitz" <glaubitz@...sik.fu-berlin.de>,
        linux-sh@...r.kernel.org, "Rich Felker" <dalias@...c.org>,
        "Yoshinori Sato" <ysato@...rs.sourceforge.jp>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 4/4] sh: machvec: remove custom ioport_{un,}map()

On Fri, Sep 15, 2023, at 17:41, Geert Uytterhoeven wrote:
> On Wed, Sep 13, 2023 at 4:30 PM Arnd Bergmann <arnd@...db.de> wrote:
>> On Wed, Sep 13, 2023, at 16:13, Geert Uytterhoeven wrote:
>>
>> Right, it looks like the GENERIC_IOMAP part if gone from that
>> series, and I also see that the PCI host bridge does not actually
>
> No, 02/30 still enables it.

Ok.

>> map the port I/O window. That's usually fine because very few
>> drivers actually need it, and it also means that there should be
>> no need for GENERIC_IOMAP or the simpler alternative.
>>
>> The first version probably only did it accidentally, which is a
>> common mistake, and I think the ones for hexagon, m68k, and
>> mips can probably be removed as well with some simplifiations.
>
> When not selecting GENERIC_IOMAP in v2, the build fails with:
>
> sh4-linux-gnu-ld: lib/devres.o: in function `pcim_iomap_release':
> devres.c:(.text+0x234): undefined reference to `pci_iounmap'

Odd, that one is provided based on CONFIG_GENERIC_PCI_IOMAP
and should be provided by common code, despite the similar
naming this is unrelated to CONFIG_GENERIC_IOMAP.

    Arnd

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