arch/mips/boot/compressed/../../../../lib/ashldi3.c:9:19: warning: no previous prototype for function '__ashldi3'

[kernel test robot <lkp@intel.com>]

:::::: 
:::::: Manual check reason: "low confidence static check first_new_problem: arch/mips/boot/compressed/../../../../lib/ashldi3.c:9:19: warning: no previous prototype for function '__ashldi3' [-Wmissing-prototypes]"
:::::: 

BCC: lkp@intel.com
CC: llvm@lists.linux.dev
CC: oe-kbuild-all@lists.linux.dev
CC: linux-kernel@vger.kernel.org
TO: Mikhail Zhilkin <csharper2005@gmail.com>
CC: Miquel Raynal <miquel.raynal@bootlin.com>

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   ab072681eabe1ce0a9a32d4baa1a27a2d046bc4a
commit: 105c14b84d93168431abba5d55e6c26fa4b65abb mtd: parsers: scpart: fix __udivdi3 undefined on mips
date:   4 weeks ago
:::::: branch date: 3 hours ago
:::::: commit date: 4 weeks ago
config: mips-randconfig-c004-20230123 (https://download.01.org/0day-ci/archive/20230130/202301300658.biXwHEX4-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 mips cross compiling tool for clang build
        # apt-get install binutils-mipsel-linux-gnu
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=105c14b84d93168431abba5d55e6c26fa4b65abb
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 105c14b84d93168431abba5d55e6c26fa4b65abb
        # save the config file
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross  olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross 

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

Note: functions only called from assembly code should be annotated with the asmlinkage attribute
All warnings (new ones prefixed by >>):

>> arch/mips/boot/compressed/../../../../lib/ashldi3.c:9:19: warning: no previous prototype for function '__ashldi3' [-Wmissing-prototypes]
   long long notrace __ashldi3(long long u, word_type b)
                     ^
   arch/mips/boot/compressed/../../../../lib/ashldi3.c:9:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   long long notrace __ashldi3(long long u, word_type b)
   ^
   static 
   1 warning generated.


vim +/__ashldi3 +9 arch/mips/boot/compressed/../../../../lib/ashldi3.c

b35cd9884fa5d8 Palmer Dabbelt 2017-05-23  8  
b35cd9884fa5d8 Palmer Dabbelt 2017-05-23 @9  long long notrace __ashldi3(long long u, word_type b)

:::::: The code at line 9 was first introduced by commit
:::::: b35cd9884fa5d81c9d5e7f57c9d03264ae2bd835 lib: Add shared copies of some GCC library routines

:::::: TO: Palmer Dabbelt <palmer@dabbelt.com>
:::::: CC: Palmer Dabbelt <palmer@dabbelt.com>

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