[kbuild-all] Re: arch/arm/mach-s3c/gpio-samsung.c:1309:14: warning: no previous prototype for 's3c2410_modify_misccr'

tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 89d714ab6043bca7356b5c823f5335f5dce1f930 commit: 71b9114d2c13a648fbe6523dd859e611c316ad90 ARM: s3c: move into a common directory date: 1 year, 3 months ago config: arm-randconfig-r006-20211002 (attached as .config) compiler: arm-linux-gnueabi-gcc (GCC) 11.2.0 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/torvalds/linux.git/commit... git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 71b9114d2c13a648fbe6523dd859e611c316ad90 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=arm 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 >>): >> arch/arm/mach-s3c/gpio-samsung.c:1309:14: warning: no previous prototype for 's3c2410_modify_misccr' [-Wmissing-prototypes] 1309 | unsigned int s3c2410_modify_misccr(unsigned int clear, unsigned int change) | ^~~~~~~~~~~~~~~~~~~~~