netdev - Re: [PATCH v7 03/37] sparc: io: To use the define of ioremap

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Date:   Wed, 21 Feb 2018 16:05:41 +0800
From:   Greentime Hu <green.hu@...il.com>
To:     Arnd Bergmann <arnd@...db.de>
Cc:     sparclinux <sparclinux@...r.kernel.org>,
        Greentime <greentime@...estech.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-arch <linux-arch@...r.kernel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Jason Cooper <jason@...edaemon.net>,
        Marc Zyngier <marc.zyngier@....com>,
        Rob Herring <robh+dt@...nel.org>,
        Networking <netdev@...r.kernel.org>,
        Vincent Chen <deanbo422@...il.com>,
        DTML <devicetree@...r.kernel.org>,
        Al Viro <viro@...iv.linux.org.uk>,
        David Howells <dhowells@...hat.com>,
        Will Deacon <will.deacon@....com>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        linux-serial@...r.kernel.org,
        Geert Uytterhoeven <geert.uytterhoeven@...il.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Mark Rutland <mark.rutland@....com>, Greg KH <greg@...ah.com>,
        Guo Ren <ren_guo@...ky.com>,
        Randy Dunlap <rdunlap@...radead.org>,
        David Miller <davem@...emloft.net>,
        Jonas Bonn <jonas@...thpole.se>,
        Stefan Kristiansson <stefan.kristiansson@...nalahti.fi>,
        Stafford Horne <shorne@...il.com>
Subject: Re: [PATCH v7 03/37] sparc: io: To use the define of
 ioremap_[nocache|wc|wb] in asm-generic/io.h

2018-02-14 22:43 GMT+08:00 Arnd Bergmann <arnd@...db.de>:
> On Tue, Feb 13, 2018 at 10:09 AM, Greentime Hu <green.hu@...il.com> wrote:
>> A commit for the nds32 architecture bootstrap("asm-generic/io.h: move
>> ioremap_nocache/ioremap_uc/ioremap_wc/ioremap_wt out of ifndef CONFIG_MMU")
>> will move the ioremap_nocache out of the CONFIG_MMU ifdef. This means that
>> in order to suppress re-definition errors we need to remove the #define
>> in io_32.h.
>>
>> Also, the change adds a prototype for ioremap where size is size_t and
>> offset is phys_addr_t so fix that as well.
>>
>> Signed-off-by: Greentime Hu <greentime@...estech.com>
>
> This patch should have been addressed to the sparclinux mailing list to
> the maintainers can see it, otherwise they are unlikely to notice.
>
> Added it to Cc now.
>
> Can you confirm that the patches are ordered correctly in your series so that
> at no point, sparc is in a state that fails to be build cleanly?
>
> If not, this may have to get merged into the other patch.

Hi, Arnd:

These 2 patch will cause sparc building error in any order.

commit af84603e339a6832052071aca1f2a16b8963cc2e
Author: Greentime Hu <green.hu@...il.com>
Date:   Tue Feb 13 17:09:07 2018 +0800

    sparc: io: To use the define of ioremap_[nocache|wc|wb] in asm-generic/io.h

    A commit for the nds32 architecture bootstrap("asm-generic/io.h: move
    ioremap_nocache/ioremap_uc/ioremap_wc/ioremap_wt out of     ifndef
CONFIG_MMU")
    will move the ioremap_nocache out of the CONFIG_MMU ifdef. This means that
    in order to suppress re-definition errors we need to remove the #define
    in io_32.h.

    Also, the change adds a prototype for ioremap where size is size_t and
    offset is phys_addr_t so fix that as well.

    Signed-off-by: Greentime Hu <greentime@...estech.com>

commit 1995b30ea6628b261192662741940c22ac978884
Author: Greentime Hu <green.hu@...il.com>
Date:   Tue Feb 13 17:09:06 2018 +0800

    asm-generic/io.h: move
ioremap_nocache/ioremap_uc/ioremap_wc/ioremap_wt out of ifndef
CONFIG_MMU

    It allows some architectures to use this generic macro instead of
    defining theirs.

    Signed-off-by: Vincent Chen <vincentc@...estech.com>
    Signed-off-by: Greentime Hu <greentime@...estech.com>
    Acked-by: Arnd Bergmann <arnd@...db.de>

Should I merge them together like this?

asm-generic/io.h: move ioremap_nocache/ioremap_uc/ioremap_wc/ioremap_wt out of
ifndef CONFIG_MMU

It allows some architectures to use this generic macro instead of
defining theirs.

sparc: io: To use the define of ioremap_[nocache|wc|wb] in asm-generic/io.h
It will move the ioremap_nocache out of the CONFIG_MMU ifdef. This means that
in order to suppress re-definition errors we need to remove the #define
in arch/sparc/include/asm/io_32.h. Also, the change adds a prototype for
ioremap where size is size_t and offset is phys_addr_t so fix that as well.

Signed-off-by: Greentime Hu <greentime@...estech.com>