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Message-ID: <1b0bc704-a740-ea15-1e90-166905be27d0@baylibre.com>
Date:   Wed, 30 Mar 2022 11:09:11 +0200
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Subject: Re: [PATCH v2 09/13] pinctrl: meson: Rename REG_* to MREG_*
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To:     Geert Uytterhoeven <geert@linux-m68k.org>,
        Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc:     Qianggui Song <qianggui.song@amlogic.com>,
        Krzysztof Kozlowski <krzk@kernel.org>,
        Fabien Dessenne <fabien.dessenne@foss.st.com>,
        "open list:GPIO SUBSYSTEM" <linux-gpio@vger.kernel.org>,
        Linux ARM <linux-arm-kernel@lists.infradead.org>,
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        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        openbmc@lists.ozlabs.org,
        Linux-Renesas <linux-renesas-soc@vger.kernel.org>,
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        Linus Walleij <linus.walleij@linaro.org>,
        Kevin Hilman <khilman@baylibre.com>,
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        Tali Perry <tali.perry1@gmail.com>,
        Patrick Venture <venture@google.com>,
        Nancy Yuen <yuenn@google.com>,
        Benjamin Fair <benjaminfair@google.com>,
        Geert Uytterhoeven <geert+renesas@glider.be>,
        Tomasz Figa <tomasz.figa@gmail.com>,
        Sylwester Nawrocki <s.nawrocki@samsung.com>,
        Alim Akhtar <alim.akhtar@samsung.com>,
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        Alexandre Torgue <alexandre.torgue@foss.st.com>,
        Bartosz Golaszewski <brgl@bgdev.pl>,
        Philipp Zabel <p.zabel@pengutronix.de>
References: <20220329152926.50958-1-andriy.shevchenko@linux.intel.com>
 <20220329152926.50958-10-andriy.shevchenko@linux.intel.com>
 <94e888fe-d8fc-5379-302f-66d64f2ae10b@baylibre.com>
 <YkM22GwhxV+YKl8l@smile.fi.intel.com>
 <CAMuHMdWVA834tkeag=WOnHFGuhwZ93PkrgO24OV69Fye1hruLw@mail.gmail.com>
From:   Neil Armstrong <narmstrong@baylibre.com>
Organization: Baylibre
In-Reply-To: <CAMuHMdWVA834tkeag=WOnHFGuhwZ93PkrgO24OV69Fye1hruLw@mail.gmail.com>
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On 30/03/2022 10:54, Geert Uytterhoeven wrote:
> Hi Andy,
> 
> On Tue, Mar 29, 2022 at 6:47 PM Andy Shevchenko
> <andriy.shevchenko@linux.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:
>>>> Rename REG_* to * as a prerequisite for enabling COMPILE_TEST.
>>>
>>> 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
==============><==================================

Neil

> 
> Gr{oetje,eeting}s,
> 
>                          Geert
> 
> --
> Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
> 
> In personal conversations with technical people, I call myself a hacker. But
> when I'm talking to journalists I just say "programmer" or something like that.
>                                  -- Linus Torvalds