[ardb:efi-remove-mixed-mode 22/30] arch/ia64/kernel/efi.c:1353:7: warning: no previous prototype for 'efi_systab_show_arch'

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

tree:   git://git.kernel.org/pub/scm/linux/kernel/git/ardb/linux.git efi-remove-mixed-mode
head:   cd57f70012e67876ab331fb83fd05670727e44d1
commit: 7273d530e9395955b89a59ed682253dacbce7b7a [22/30] x86: efi: Drop UGA support
config: ia64-defconfig (https://download.01.org/0day-ci/archive/20230513/202305130900.kmXx4YNq-lkp@intel.com/config)
compiler: ia64-linux-gcc (GCC) 12.1.0
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
        # https://git.kernel.org/pub/scm/linux/kernel/git/ardb/linux.git/commit/?id=7273d530e9395955b89a59ed682253dacbce7b7a
        git remote add ardb git://git.kernel.org/pub/scm/linux/kernel/git/ardb/linux.git
        git fetch --no-tags ardb efi-remove-mixed-mode
        git checkout 7273d530e9395955b89a59ed682253dacbce7b7a
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=ia64 olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=ia64 SHELL=/bin/bash arch/ia64/kernel/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202305130900.kmXx4YNq-lkp@intel.com/

All warnings (new ones prefixed by >>):

   arch/ia64/kernel/efi.c: In function 'efi_init':
   arch/ia64/kernel/efi.c:490:13: warning: variable 'efi_desc_size' set but not used [-Wunused-but-set-variable]
     490 |         u64 efi_desc_size;
         |             ^~~~~~~~~~~~~
   arch/ia64/kernel/efi.c:489:31: warning: variable 'efi_map_end' set but not used [-Wunused-but-set-variable]
     489 |         void *efi_map_start, *efi_map_end;
         |                               ^~~~~~~~~~~
   arch/ia64/kernel/efi.c: At top level:
   arch/ia64/kernel/efi.c:971:1: warning: no previous prototype for 'find_memmap_space' [-Wmissing-prototypes]
     971 | find_memmap_space (void)
         | ^~~~~~~~~~~~~~~~~
>> arch/ia64/kernel/efi.c:1353:7: warning: no previous prototype for 'efi_systab_show_arch' [-Wmissing-prototypes]
    1353 | char *efi_systab_show_arch(char *str)
         |       ^~~~~~~~~~~~~~~~~~~~


vim +/efi_systab_show_arch +1353 arch/ia64/kernel/efi.c

120540f230d5d2d Ard Biesheuvel 2020-01-19  1352  
120540f230d5d2d Ard Biesheuvel 2020-01-19 @1353  char *efi_systab_show_arch(char *str)

:::::: The code at line 1353 was first introduced by commit
:::::: 120540f230d5d2d32846adc0156b58961c8c59d1 efi/ia64: Move HCDP and MPS table handling into IA64 arch code

:::::: TO: Ard Biesheuvel <ardb@kernel.org>
:::::: CC: Ard Biesheuvel <ardb@kernel.org>

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