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

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Message-ID: <202301310149.euWWUSrD-lkp@intel.com>
Date:   Tue, 31 Jan 2023 02:10:41 +0800
From:   kernel test robot <lkp@...el.com>
To:     Nathan Chancellor <nathan@...nel.org>, linux@...linux.org.uk,
        arnd@...db.de
Cc:     llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
        ndesaulniers@...gle.com, trix@...hat.com,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        patches@...ts.linux.dev, Nathan Chancellor <nathan@...nel.org>
Subject: Re: [PATCH] ARM: Allow pre-ARMv5 builds with ld.lld 16.0.0 and newer

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
patch link:    https://lore.kernel.org/r/20230118-v4-v4t-lld-16-v1-1-e3d9a00ae47c%40kernel.org
patch subject: [PATCH] ARM: Allow pre-ARMv5 builds with ld.lld 16.0.0 and newer
config: arm-shannon_defconfig (https://download.01.org/0day-ci/archive/20230131/202301310149.euWWUSrD-lkp@intel.com/config)
compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project 4196ca3278f78c6e19246e54ab0ecb364e37d66a)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # install arm cross compiling tool for clang build
        # apt-get install binutils-arm-linux-gnueabi
        # https://github.com/intel-lab-lkp/linux/commit/197c1476db190ad6d2afe14bc0f90de0e82f63b6
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Nathan-Chancellor/ARM-Allow-pre-ARMv5-builds-with-ld-lld-16-0-0-and-newer/20230119-032402
        git checkout 197c1476db190ad6d2afe14bc0f90de0e82f63b6
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm SHELL=/bin/bash arch/arm/mach-sa1100/ drivers/gpio/ drivers/video/fbdev/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@...el.com>

All warnings (new ones prefixed by >>):

>> 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.
--
>> drivers/gpio/gpio-sa1100.c:309:13: warning: no previous prototype for function 'sa1100_init_gpio' [-Wmissing-prototypes]
   void __init sa1100_init_gpio(void)
               ^
   drivers/gpio/gpio-sa1100.c:309:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void __init sa1100_init_gpio(void)
   ^
   static 
   1 warning generated.
--
>> drivers/video/fbdev/sa1100fb.c:1219:12: warning: no previous prototype for function 'sa1100fb_init' [-Wmissing-prototypes]
   int __init sa1100fb_init(void)
              ^
   drivers/video/fbdev/sa1100fb.c:1219:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   int __init sa1100fb_init(void)
   ^
   static 
   1 warning generated.


vim +/sa11x0_pm_init +122 arch/arm/mach-sa1100/pm.c

^1da177e4c3f41 Linus Torvalds 2005-04-16  121  
7fea1ba58e61c1 Shawn Guo      2012-04-26 @122  int __init sa11x0_pm_init(void)

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests