tree: https://chromium.googlesource.com/chromiumos/third_party/kernel chromeos-4.4 head: a321cfdc9afc13deeb29da992f74141226f914c8 commit: b83443cb68ae2fc0be53716c8d7b025838e01846 [8/216] UPSTREAM: drivers: provide devm_platform_ioremap_resource() config: s390-defconfig (attached as .config) compiler: s390-linux-gcc (GCC) 7.5.0 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 git remote add chrome-os https://chromium.googlesource.com/chromiumos/third_party/kernel git fetch --no-tags chrome-os chromeos-4.4 git checkout b83443cb68ae2fc0be53716c8d7b025838e01846 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-7.5.0 make.cross ARCH=s390 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 >>): drivers/built-in.o: In function `devm_platform_ioremap_resource': (.text+0x2b9c8): undefined reference to `devm_ioremap_resource' --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org