Hi Vineet, I love your patch! Yet something to improve: [auto build test ERROR on arc/for-next] [also build test ERROR on next-20210812] [cannot apply to linux/master linus/master v5.14-rc5] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url:https://github.com/0day-ci/linux/commits/Vineet-Gupta/ARC-mm-updates-... base:https://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc.git for-next config: arc-allyesconfig (attached as .config) compiler: arceb-elf-gcc (GCC) 10.3.0 reproduce (this is a W=1 build): wgethttps://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross #https://github.com/0day-ci/linux/commit/0411d3a95cb73722d026f7b3d9c9d8abab8c0d79 git remote add linux-reviewhttps://github.com/0day-ci/linux git fetch --no-tags linux-review Vineet-Gupta/ARC-mm-updates-support-3-4-levels-and-asm-generic-pgalloc/20210813-074023 git checkout 0411d3a95cb73722d026f7b3d9c9d8abab8c0d79 # 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> All errors (new ones prefixed by >>): In file included from arch/arc/include/asm/mmu.h:19, from include/linux/mm_types.h:19, from include/linux/buildid.h:5, from include/linux/module.h:14, from lib/test_bitops.c:9: >> arch/arc/include/asm/mmu-arcv2.h:80:1: error: 'inline' is not at beginning of declaration [-Werror=old-style-declaration] 80 | static void inline mmu_setup_asid(struct mm_struct *mm, unsigned long asid) | ^~~~~~ arch/arc/include/asm/mmu-arcv2.h:85:1: error: 'inline' is not at beginning of declaration [-Werror=old-style-declaration] 85 | static void inline mmu_setup_pgd(struct mm_struct *mm, void *pgd) | ^~~~~~ cc1: all warnings being treated as errors