linux-kernel - Re: [PATCH v2 09/13] pinctrl: meson: Rename REG_* to MREG

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Message-ID: <YkQgfwUs8KbhF/b/@smile.fi.intel.com>
Date:   Wed, 30 Mar 2022 12:18:55 +0300
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Neil Armstrong <narmstrong@...libre.com>
Cc:     Geert Uytterhoeven <geert@...ux-m68k.org>,
        Qianggui Song <qianggui.song@...ogic.com>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        Fabien Dessenne <fabien.dessenne@...s.st.com>,
        "open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        "open list:ARM/Amlogic Meson..." <linux-amlogic@...ts.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        openbmc@...ts.ozlabs.org,
        Linux-Renesas <linux-renesas-soc@...r.kernel.org>,
        linux-samsung-soc <linux-samsung-soc@...r.kernel.org>,
        linux-stm32@...md-mailman.stormreply.com,
        Linus Walleij <linus.walleij@...aro.org>,
        Kevin Hilman <khilman@...libre.com>,
        Jerome Brunet <jbrunet@...libre.com>,
        Martin Blumenstingl <martin.blumenstingl@...glemail.com>,
        Andrew Lunn <andrew@...n.ch>,
        Gregory Clement <gregory.clement@...tlin.com>,
        Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
        Avi Fishman <avifishman70@...il.com>,
        Tomer Maimon <tmaimon77@...il.com>,
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        Patrick Venture <venture@...gle.com>,
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        Benjamin Fair <benjaminfair@...gle.com>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Tomasz Figa <tomasz.figa@...il.com>,
        Sylwester Nawrocki <s.nawrocki@...sung.com>,
        Alim Akhtar <alim.akhtar@...sung.com>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>,
        Bartosz Golaszewski <brgl@...ev.pl>,
        Philipp Zabel <p.zabel@...gutronix.de>
Subject: Re: [PATCH v2 09/13] pinctrl: meson: Rename REG_* to MREG_*

On Wed, Mar 30, 2022 at 11:09:11AM +0200, Neil Armstrong wrote:
> On 30/03/2022 10:54, Geert Uytterhoeven wrote:
> > On Tue, Mar 29, 2022 at 6:47 PM Andy Shevchenko
> > <andriy.shevchenko@...ux.intel.com> wrote:
> > > On Tue, Mar 29, 2022 at 06:13:19PM +0200, Neil Armstrong wrote:
> > > > On 29/03/2022 17:29, Andy Shevchenko wrote:

...

> > > > What error do you hit ?
> > > 
> > > arch/x86/include/asm/arch_hweight.h:9:17: error: expected identifier before string constant
> > > 9 | #define REG_OUT "a"
> > >    |                 ^~~
> > 
> > Perhaps REG_{OUT,IN} in arch/x86/include/asm/arch_hweight.h should be
> > renamed instead, as this is a generic header file that can be included
> > anywhere, while the REG_{OUT,IN} definitions are only used locally,
> > in the header file?
> 
> Even better, those REG_OUT/REG_IN should be undefined at the end of the header since only
> used in the headers inline functions:
> ==============><==================================
> diff --git a/arch/x86/include/asm/arch_hweight.h b/arch/x86/include/asm/arch_hweight.h
> index ba88edd0d58b..139a4b0a2a14 100644
> --- a/arch/x86/include/asm/arch_hweight.h
> +++ b/arch/x86/include/asm/arch_hweight.h
> @@ -52,4 +52,7 @@ static __always_inline unsigned long __arch_hweight64(__u64 w)
>  }
>  #endif /* CONFIG_X86_32 */
> 
> +#undef REG_IN
> +#undef REG_OUT
> +
>  #endif
> ==============><==================================

Can you submit a formal patch, please?


And I think it would be good to have my patch as well, so we do not depend on
the fate of the other one.

-- 
With Best Regards,
Andy Shevchenko