[kbuild-all] [freescale-fslc:5.10.x+fslc 5/7] arch/arm/mach-imx/src.c:88:6: warning: no previous prototype for 'imx_gpcv2_set_m_core_pgc'

tree: https://github.com/Freescale/linux-fslc 5.10.x+fslc head: 9496f7cd9619027b3ab4b4d5559d04122fb09457 commit: dacfb877023ad8f6728a8e962319c6ccf4ea389e [5/7] ARM: imx: add smp support for imx7d config: arm-defconfig (attached as .config) compiler: arm-linux-gnueabi-gcc (GCC) 9.3.0 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://github.com/Freescale/linux-fslc/commit/dacfb877023ad8f6728a8e9623... git remote add freescale-fslc https://github.com/Freescale/linux-fslc git fetch --no-tags freescale-fslc 5.10.x+fslc git checkout dacfb877023ad8f6728a8e962319c6ccf4ea389e # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 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 >>): 88 | void imx_gpcv2_set_m_core_pgc(bool enable, u32 offset) | ^~~~~~~~~~~~~~~~~~~~~~~~ vim +/imx_gpcv2_set_m_core_pgc +88 arch/arm/mach-imx/src.c 87 89 { 90 writel_relaxed(enable, gpc_base + offset); 91 } 92 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org