[luxis1999-dev-iommu:iommufd-vfio-v5.16-rc1 28/32] ERROR: modpost: "vfio_device_add_iova_cap" [drivers/iommufd/iommufd.ko] undefined!

[kernel test robot]

tree:   https://github.com/luxis1999/dev-iommu iommufd-vfio-v5.16-rc1
head:   0c6c7bdb5b3f7d4c8e6b03d34a59ac6bf3d02539
commit: 8cf95fb55abb3ce739dbd22fd9c32cb1c02de9b6 [28/32] iommufd: Report iova range to userspace
config: nios2-randconfig-r005-20211105 (attached as .config)
compiler: nios2-linux-gcc (GCC) 11.2.0
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/luxis1999/dev-iommu/commit/8cf95fb55abb3ce739dbd22fd9c32cb1c02de9b6
        git remote add luxis1999-dev-iommu https://github.com/luxis1999/dev-iommu
        git fetch --no-tags luxis1999-dev-iommu iommufd-vfio-v5.16-rc1
        git checkout 8cf95fb55abb3ce739dbd22fd9c32cb1c02de9b6
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=nios2 

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

All errors (new ones prefixed by >>, old ones prefixed by <<):

>> ERROR: modpost: "vfio_device_add_iova_cap" [drivers/iommufd/iommufd.ko] undefined!

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

Attachment: .config.gz
Description: application/gzip