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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <1b0bc704-a740-ea15-1e90-166905be27d0@baylibre.com>
Date:   Wed, 30 Mar 2022 11:09:11 +0200
From:   Neil Armstrong <narmstrong@...libre.com>
To:     Geert Uytterhoeven <geert@...ux-m68k.org>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc:     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>,
        Tali Perry <tali.perry1@...il.com>,
        Patrick Venture <venture@...gle.com>,
        Nancy Yuen <yuenn@...gle.com>,
        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 30/03/2022 10:54, Geert Uytterhoeven wrote:
> Hi Andy,
> 
> 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:
>>>> 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@...ux-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