linux-kernel - arch/arm/mach-sa1100/pm.c:122:12: warning: no previous prototype for function 'sa11x0_pm

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Message-ID: <202309300341.lmOXFhDS-lkp@intel.com>
Date:   Sat, 30 Sep 2023 04:07:29 +0800
From:   kernel test robot <lkp@...el.com>
To:     Nathan Chancellor <nathan@...nel.org>
Cc:     llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
        linux-kernel@...r.kernel.org,
        "Russell King (Oracle)" <rmk+kernel@...linux.org.uk>
Subject: arch/arm/mach-sa1100/pm.c:122:12: warning: no previous prototype for
 function 'sa11x0_pm_init'

Hi Nathan,

FYI, the error/warning was bisected to this commit, please ignore it if it's irrelevant.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   1c84724ccb1a9f6eaf727ded49dd7e22ac62cc5b
commit: 5eb6e280432ddc9b755193552f3a070da8d7455c ARM: 9289/1: Allow pre-ARMv5 builds with ld.lld 16.0.0 and newer
date:   8 months ago
config: arm-collie_defconfig (https://download.01.org/0day-ci/archive/20230930/202309300341.lmOXFhDS-lkp@intel.com/config)
compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project.git 4a5ac14ee968ff0ad5d2cc1ffa0299048db4c88a)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20230930/202309300341.lmOXFhDS-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202309300341.lmOXFhDS-lkp@intel.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]
     122 | 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
     122 | 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]
     309 | 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
     309 | void __init sa1100_init_gpio(void)
         | ^
         | static 
   1 warning generated.
--
>> drivers/pcmcia/pxa2xx_sharpsl.c:206:5: warning: no previous prototype for function 'pcmcia_collie_init' [-Wmissing-prototypes]
     206 | int pcmcia_collie_init(struct device *dev)
         |     ^
   drivers/pcmcia/pxa2xx_sharpsl.c:206:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
     206 | int pcmcia_collie_init(struct device *dev)
         | ^
         | static 
   1 warning generated.
--
>> drivers/video/fbdev/sa1100fb.c:1219:12: warning: no previous prototype for function 'sa1100fb_init' [-Wmissing-prototypes]
    1219 | 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
    1219 | 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)

:::::: The code at line 122 was first introduced by commit
:::::: 7fea1ba58e61c17fb59dfc50c408945f307addc6 ARM: sa1100: use machine specific hook for late init

:::::: TO: Shawn Guo <shawn.guo@...aro.org>
:::::: CC: Shawn Guo <shawn.guo@...aro.org>

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