[linux-next:master 5107/5720] arch/arm64/mm/hugetlbpage.c:380:9: error: duplicate case value

[kernel test robot <lkp@xxxxxxxxx>]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   2f9cb3d3bd73fc2225d66aa8fcffb632ed3eb235
commit: 8f32147e69adb8259faa07d8e28360ab782363d0 [5107/5720] arm64/hugetlb: implement arm64 specific hugetlb_mask_last_page
config: arm64-randconfig-s031-20220626
compiler: aarch64-linux-gcc (GCC) 11.3.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # apt-get install sparse
        # sparse version: v0.6.4-31-g4880bd19-dirty
        # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=8f32147e69adb8259faa07d8e28360ab782363d0
        git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
        git fetch --no-tags linux-next master
        git checkout 8f32147e69adb8259faa07d8e28360ab782363d0
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=arm64 SHELL=/bin/bash arch/arm64/mm/

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@xxxxxxxxx>

All errors (new ones prefixed by >>):

   arch/arm64/mm/hugetlbpage.c: In function 'hugetlb_mask_last_page':
>> arch/arm64/mm/hugetlbpage.c:380:9: error: duplicate case value
     380 |         case PMD_SIZE:
         |         ^~~~
   arch/arm64/mm/hugetlbpage.c:376:9: note: previously used here
     376 |         case PUD_SIZE:
         |         ^~~~


vim +380 arch/arm64/mm/hugetlbpage.c

   370	
   371	unsigned long hugetlb_mask_last_page(struct hstate *h)
   372	{
   373		unsigned long hp_size = huge_page_size(h);
   374	
   375		switch (hp_size) {
   376		case PUD_SIZE:
   377			return PGDIR_SIZE - PUD_SIZE;
   378		case CONT_PMD_SIZE:
   379			return PUD_SIZE - CONT_PMD_SIZE;
 > 380		case PMD_SIZE:
   381			return PUD_SIZE - PMD_SIZE;
   382		case CONT_PTE_SIZE:
   383			return PMD_SIZE - CONT_PTE_SIZE;
   384		default:
   385			break;
   386		}
   387	
   388		return 0UL;
   389	}
   390	

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