[kbuild-all] [printk:for-5.15-printk-index 4/5] kernel/printk/index.c:140:6: warning: no previous prototype for 'pi_create_file'

tree: https://git.kernel.org/pub/scm/linux/kernel/git/printk/linux.git for-5.15-printk-index head: ad7d61f159db73974f1b0352f21afe04b0bbd920 commit: 337015573718b161891a3473d25f59273f2e626b [4/5] printk: Userspace format indexing support config: arc-allyesconfig (attached as .config) compiler: arceb-elf-gcc (GCC) 10.3.0 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/printk/linux.git/commit/?... git remote add printk https://git.kernel.org/pub/scm/linux/kernel/git/printk/linux.git git fetch --no-tags printk for-5.15-printk-index git checkout 337015573718b161891a3473d25f59273f2e626b # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-10.3.0 make.cross ARCH=arc If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): 140 | void pi_create_file(struct module *mod) | ^~~~~~~~~~~~~~ 146 | void pi_remove_file(struct module *mod) | ^~~~~~~~~~~~~~ vim +/pi_create_file +140 kernel/printk/index.c 139 141 { 142 debugfs_create_file(pi_get_module_name(mod), 0444, dfs_index, 143 mod, &dfs_index_fops); 144 } 145 147 { 148 debugfs_remove(debugfs_lookup(pi_get_module_name(mod), dfs_index)); 149 } 150 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org