linux-kernel - Re: [PATCH] ARM: Allow pre-ARMv5 builds with ld.lld 16.0.0 and newer

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Date:   Mon, 30 Jan 2023 14:03:14 -0800
From:   Nick Desaulniers <ndesaulniers@...gle.com>
To:     Arnd Bergmann <arnd@...db.de>
Cc:     kernel test robot <lkp@...el.com>,
        Nathan Chancellor <nathan@...nel.org>,
        Russell King <linux@...linux.org.uk>, llvm@...ts.linux.dev,
        oe-kbuild-all@...ts.linux.dev, Tom Rix <trix@...hat.com>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        patches@...ts.linux.dev
Subject: Re: [PATCH] ARM: Allow pre-ARMv5 builds with ld.lld 16.0.0 and newer

On Mon, Jan 30, 2023 at 10:19 AM Arnd Bergmann <arnd@...db.de> wrote:
>
> On Mon, Jan 30, 2023, at 19:10, kernel test robot wrote:
> > Hi Nathan,
> >
> > I love your patch! Perhaps something to improve:
> >
> > [auto build test WARNING on 5dc4c995db9eb45f6373a956eb1f69460e69e6d4]
> >
> > url:
> > https://github.com/intel-lab-lkp/linux/commits/Nathan-Chancellor/ARM-Allow-pre-ARMv5-builds-with-ld-lld-16-0-0-and-newer/20230119-032402
> > base:   5dc4c995db9eb45f6373a956eb1f69460e69e6d4
> >>> arch/arm/mach-sa1100/pm.c:122:12: warning: no previous prototype for function 'sa11x0_pm_init' [-Wmissing-prototypes]
> >    int __init sa11x0_pm_init(void)
> >               ^
> >    arch/arm/mach-sa1100/pm.c:122:1: note: declare 'static' if the
> > function is not intended to be used outside of this translation unit
> >    int __init sa11x0_pm_init(void)
> >    ^
> >    static
> >    1 warning generated.
> > --
>
>
> For refernece, these are all known problems, the patch just allowed
> the code to be built by clang/lld when that was previously not
> possible.
>
> After the 6.3 merge window, we can probably go through the much
> smaller set of board files are address most of the W=1 warnings that
> were previously overwhelming.

Yeah! I've filed
https://github.com/ClangBuiltLinux/continuous-integration2/issues/509
too so that we can wire up an ARMv4 test in our CI as well.

>
>       Arnd



-- 
Thanks,
~Nick Desaulniers