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-support-3-4-levels-and-asm-generic-pgalloc/20210813-074023
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):
        wget https://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-review https://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@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


vim +/inline +80 arch/arc/include/asm/mmu-arcv2.h

    79	
  > 80	static void inline mmu_setup_asid(struct mm_struct *mm, unsigned long asid)
    81	{
    82		write_aux_reg(ARC_REG_PID, asid | MMU_ENABLE);
    83	}
    84	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org