[kbuild-all] [intel-linux-intel-lts:4.19/android_r 19121/22444] io-pgtable.c:undefined reference to `iommu_debugfs_top'

tree: https://github.com/intel/linux-intel-lts.git 4.19/android_r head: dbeb432ffcb6d39ce05d76a2e7d77c8656def48d commit: d50a6d412d61dbbde36becaf093d1b8ae3868b8a [19121/22444] binder.c modify secids for struct and param by refs config: nios2-randconfig-r024-20210317 (attached as .config) compiler: nios2-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://github.com/intel/linux-intel-lts/commit/d50a6d412d61dbbde36becaf0... git remote add intel-linux-intel-lts https://github.com/intel/linux-intel-lts.git git fetch --no-tags intel-linux-intel-lts 4.19/android_r git checkout d50a6d412d61dbbde36becaf093d1b8ae3868b8a # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=nios2 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): nios2-linux-ld: drivers/iommu/io-pgtable.o: in function `io_pgtable_init': Kconfig warnings: (for reference only) WARNING: unmet direct dependencies detected for SERIAL_CORE_CONSOLE Depends on TTY && HAS_IOMEM Selected by - EARLY_PRINTK --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org