[weiny2:lm-misc3 5/8] arch/mips/include/asm/highmem.h:52:15: error: implicit declaration of function '__kmap'; did you mean 'kmap'?

[weiny2:lm-misc3 5/8] arch/mips/include/asm/highmem.h:52:15: error: implicit declaration of function '__kmap'; did you mean 'kmap'?

[kbuild test robot]

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tree:   https://github.com/weiny2/linux-kernel.git lm-misc3
head:   80c335a89ca34e82fad340c46ee8fdd6cc908f2e
commit: 98755490c4ee337ec6b3d89ec434469b56c2cf99 [5/8] arch/kmap: Remove redundant arch specific kmaps
config: mips-fuloong2e_defconfig (attached as .config)
compiler: mips64el-linux-gcc (GCC) 9.3.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git checkout 98755490c4ee337ec6b3d89ec434469b56c2cf99
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day GCC_VERSION=9.3.0 make.cross ARCH=mips 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kbuild test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   In file included from arch/mips/mm/cache.c:19:
   arch/mips/include/asm/highmem.h: In function 'kmap':
>> arch/mips/include/asm/highmem.h:52:15: error: implicit declaration of function '__kmap'; did you mean 'kmap'? [-Werror=implicit-function-declaration]
      52 |  void *addr = __kmap(page);
         |               ^~~~~~
         |               kmap
>> arch/mips/include/asm/highmem.h:52:15: error: initialization of 'void *' from 'int' makes pointer from integer without a cast [-Werror=int-conversion]
>> arch/mips/include/asm/highmem.h:54:2: error: implicit declaration of function 'flush_tlb_one' [-Werror=implicit-function-declaration]
      54 |  flush_tlb_one((unsigned long)addr);
         |  ^~~~~~~~~~~~~
   cc1: all warnings being treated as errors
--
   In file included from arch/mips/mm/fault.c:28:
   arch/mips/include/asm/highmem.h: In function 'kmap':
>> arch/mips/include/asm/highmem.h:52:15: error: implicit declaration of function '__kmap'; did you mean 'kmap'? [-Werror=implicit-function-declaration]
      52 |  void *addr = __kmap(page);
         |               ^~~~~~
         |               kmap
>> arch/mips/include/asm/highmem.h:52:15: error: initialization of 'void *' from 'int' makes pointer from integer without a cast [-Werror=int-conversion]
   cc1: all warnings being treated as errors

vim +52 arch/mips/include/asm/highmem.h

    48	
    49	#define ARCH_HAS_KMAP
    50	static inline void *kmap(struct page *page)
    51	{
  > 52		void *addr = __kmap(page);
    53	
  > 54		flush_tlb_one((unsigned long)addr);
    55		return addr;
    56	}
    57	extern void * kmap_high(struct page *page);
    58	extern void kunmap_high(struct page *page);
    59	

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

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