linux-kernel - Re: [DO NOT MERGE v5 10/37] sh: Common PCI Framework driver support.

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Date:   Tue, 05 Dec 2023 14:05:11 +0100
From:   "Arnd Bergmann" <arnd@...db.de>
To:     "Yoshinori Sato" <ysato@...rs.sourceforge.jp>,
        linux-sh@...r.kernel.org
Cc:     "Damien Le Moal" <dlemoal@...nel.org>,
        "Rob Herring" <robh+dt@...nel.org>,
        "Krzysztof Kozlowski" <krzysztof.kozlowski+dt@...aro.org>,
        "Conor Dooley" <conor+dt@...nel.org>,
        "Geert Uytterhoeven" <geert+renesas@...der.be>,
        "Michael Turquette" <mturquette@...libre.com>,
        "Stephen Boyd" <sboyd@...nel.org>,
        "Dave Airlie" <airlied@...il.com>,
        "Daniel Vetter" <daniel@...ll.ch>,
        "Maarten Lankhorst" <maarten.lankhorst@...ux.intel.com>,
        "Maxime Ripard" <mripard@...nel.org>,
        "Thomas Zimmermann" <tzimmermann@...e.de>,
        "Thomas Gleixner" <tglx@...utronix.de>,
        "Lorenzo Pieralisi" <lpieralisi@...nel.org>,
        Krzysztof Wilczyński <kw@...ux.com>,
        "Bjorn Helgaas" <bhelgaas@...gle.com>,
        "Greg Kroah-Hartman" <gregkh@...uxfoundation.org>,
        "Jiri Slaby" <jirislaby@...nel.org>,
        "Magnus Damm" <magnus.damm@...il.com>,
        "Daniel Lezcano" <daniel.lezcano@...aro.org>,
        "Rich Felker" <dalias@...c.org>,
        "John Paul Adrian Glaubitz" <glaubitz@...sik.fu-berlin.de>,
        "Lee Jones" <lee@...nel.org>, "Helge Deller" <deller@....de>,
        Heiko Stübner <heiko@...ech.de>,
        "Jernej Skrabec" <jernej.skrabec@...il.com>,
        "Chris Morgan" <macromorgan@...mail.com>,
        "Linus Walleij" <linus.walleij@...aro.org>,
        "Randy Dunlap" <rdunlap@...radead.org>,
        "Hyeonggon Yoo" <42.hyeyoo@...il.com>,
        "David Rientjes" <rientjes@...gle.com>,
        "Vlastimil Babka" <vbabka@...e.cz>, "Baoquan He" <bhe@...hat.com>,
        "Andrew Morton" <akpm@...ux-foundation.org>,
        "Guenter Roeck" <linux@...ck-us.net>,
        "Stephen Rothwell" <sfr@...b.auug.org.au>,
        guoren <guoren@...nel.org>,
        "Javier Martinez Canillas" <javierm@...hat.com>,
        "Azeem Shaikh" <azeemshaikh38@...il.com>,
        "Palmer Dabbelt" <palmer@...osinc.com>,
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        "Max Filippov" <jcmvbkbc@...il.com>, "Tom Rix" <trix@...hat.com>,
        "Herve Codina" <herve.codina@...tlin.com>,
        "Jacky Huang" <ychuang3@...oton.com>,
        "Lukas Bulwahn" <lukas.bulwahn@...il.com>,
        "Jonathan Corbet" <corbet@....net>,
        "Biju Das" <biju.das.jz@...renesas.com>,
        Uwe Kleine-König <u.kleine-koenig@...gutronix.de>,
        "Sam Ravnborg" <sam@...nborg.org>,
        "Michael Karcher" <kernel@...rcher.dialup.fu-berlin.de>,
        "Sergey Shtylyov" <s.shtylyov@....ru>,
        "Laurent Pinchart" <laurent.pinchart+renesas@...asonboard.com>,
        linux-ide@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Linux-Renesas <linux-renesas-soc@...r.kernel.org>,
        linux-clk@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        linux-pci@...r.kernel.org, linux-serial@...r.kernel.org,
        linux-fbdev@...r.kernel.org
Subject: Re: [DO NOT MERGE v5 10/37] sh: Common PCI Framework driver support.

On Tue, Dec 5, 2023, at 10:45, Yoshinori Sato wrote:
> +
> +#if defined(CONFIG_PCI) && !defined(CONFIG_GENERIC_IOMAP)
> +void pci_iounmap(struct pci_dev *dev, void __iomem *addr)
> +{
> +	iounmap(addr);
> +}
> +EXPORT_SYMBOL(pci_iounmap);

This definition does not work for addresses that are
returned by ioport_map(), include pci_iomap() on
IORESOURCE_IO.  However, the definition in lib/pci_iomap.c
should work fine, you just need to #define ARCH_WANTS_GENERIC_PCI_IOUNMAP
to get that.

      Arnd