undefined reference to `dma_to_phys'

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   88bb507a74ea7d75fa49edd421eaa710a7d80598
commit: 7bc5c428a660d4d1bc95ba54bf4cb6bccf8c3029 dma-direct: remove __dma_to_phys
date:   5 months ago
config: mips-randconfig-r033-20210202 (attached as .config)
compiler: mips64-linux-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://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7bc5c428a660d4d1bc95ba54bf4cb6bccf8c3029
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 7bc5c428a660d4d1bc95ba54bf4cb6bccf8c3029
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=mips 

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

All errors (new ones prefixed by >>):

   mips64-linux-ld: kernel/dma/mapping.o: in function `dma_sync_single_for_cpu':
>> (.text+0x198): undefined reference to `dma_to_phys'
   mips64-linux-ld: kernel/dma/mapping.o: in function `dma_sync_single_for_device':
   (.text+0x1f4): undefined reference to `dma_to_phys'
   mips64-linux-ld: kernel/dma/mapping.o: in function `dma_unmap_page_attrs':
   (.text+0x56c): undefined reference to `dma_to_phys'
>> mips64-linux-ld: (.text+0x57c): undefined reference to `dma_to_phys'
   mips64-linux-ld: kernel/dma/mapping.o: in function `dma_map_page_attrs':
   (.text+0x75c): undefined reference to `__phys_to_dma'
   mips64-linux-ld: kernel/dma/direct.o: in function `dma_direct_get_required_mask':
   direct.c:(.text+0xbc): undefined reference to `__phys_to_dma'
   mips64-linux-ld: kernel/dma/direct.o: in function `dma_direct_alloc':
>> direct.c:(.text+0x20c): undefined reference to `dma_to_phys'
   mips64-linux-ld: direct.c:(.text+0x300): undefined reference to `__phys_to_dma'
   mips64-linux-ld: direct.c:(.text+0x3b0): undefined reference to `__phys_to_dma'
   mips64-linux-ld: kernel/dma/direct.o: in function `dma_direct_free':
   direct.c:(.text+0x40c): undefined reference to `dma_to_phys'
   mips64-linux-ld: kernel/dma/direct.o: in function `dma_direct_map_sg':
   direct.c:(.text+0x4e4): undefined reference to `__phys_to_dma'
   mips64-linux-ld: kernel/dma/direct.o: in function `dma_direct_get_sgtable':
   direct.c:(.text+0x734): undefined reference to `dma_to_phys'
   mips64-linux-ld: kernel/dma/direct.o: in function `dma_direct_mmap':
   direct.c:(.text+0x804): undefined reference to `dma_to_phys'
   mips64-linux-ld: kernel/dma/direct.o: in function `dma_direct_supported':
   direct.c:(.text+0x8d8): undefined reference to `__phys_to_dma'
   mips64-linux-ld: kernel/dma/direct.o: in function `dma_direct_need_sync':
   direct.c:(.text+0x910): undefined reference to `dma_to_phys'

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

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