[android-common:android-4.19 10/14] ld.lld: error: undefined symbol: iommu_debugfs_top

[android-common:android-4.19 10/14] ld.lld: error: undefined symbol: iommu_debugfs_top

[kernel test robot]

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tree:   https://android.googlesource.com/kernel/common android-4.19
head:   a2038b4794fe99dd786877b89c98b84d78650f69
commit: e24979f0e7bff01a70f00a01fccc5d62f6f980aa [10/14] ANDROID: GKI: iommu: Snapshot of vendor changes
config: x86_64-randconfig-a013-20210119 (attached as .config)
compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project 22b68440e1647e16b5ee24b924986207173c02d1)
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
        # install x86_64 cross compiling tool for clang build
        # apt-get install binutils-x86-64-linux-gnu
        git remote add android-common https://android.googlesource.com/kernel/common
        git fetch --no-tags android-common android-4.19
        git checkout e24979f0e7bff01a70f00a01fccc5d62f6f980aa
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 

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 >>):

>> ld.lld: error: undefined symbol: iommu_debugfs_top
   >>> referenced by io-pgtable.c
   >>> drivers/iommu/io-pgtable.o:(io_pgtable_init) in archive built-in.a
   >>> referenced by io-pgtable.c
   >>> drivers/iommu/io-pgtable.o:(io_pgtable_init) in archive built-in.a
   >>> referenced by io-pgtable.c
   >>> drivers/iommu/io-pgtable.o:(io_pgtable_init) in archive built-in.a

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

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