[jirislaby:lto 7/48] kernel/static_call_inline.c:504:22: warning: no previous prototype for 'sc_func_a'

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/jirislaby/linux.git lto
head:   b5ee1c28376713353cb5355716949d9c6d9b416b
commit: 7968aa68d8a410363407df9a678f4027874affcb [7/48] static_call: Make static call functions visible
config: x86_64-allyesconfig (https://download.01.org/0day-ci/archive/20220628/202206280510.uGOwzwNF-lkp@xxxxxxxxx/config)
compiler: gcc-11 (Debian 11.3.0-3) 11.3.0
reproduce (this is a W=1 build):
        # https://git.kernel.org/pub/scm/linux/kernel/git/jirislaby/linux.git/commit/?id=7968aa68d8a410363407df9a678f4027874affcb
        git remote add jirislaby https://git.kernel.org/pub/scm/linux/kernel/git/jirislaby/linux.git
        git fetch --no-tags jirislaby lto
        git checkout 7968aa68d8a410363407df9a678f4027874affcb
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash

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

All warnings (new ones prefixed by >>):

>> kernel/static_call_inline.c:504:22: warning: no previous prototype for 'sc_func_a' [-Wmissing-prototypes]
     504 | __visible_on_lto int sc_func_a(int x)
         |                      ^~~~~~~~~


vim +/sc_func_a +504 kernel/static_call_inline.c

   503	
 > 504	__visible_on_lto int sc_func_a(int x)
   505	{
   506		return x+1;
   507	}
   508	

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