tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: f01c30de86f1047e9bae1b1b1417b0ce8dcd15b1 commit: ea0c0ad6b6eb36726088991d97a55b99cae456d0 memory: Enable compile testing for most of the drivers date: 3 months ago config: arm-randconfig-p002-20201115 (attached as .config) compiler: arm-linux-gnueabi-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... git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout ea0c0ad6b6eb36726088991d97a55b99cae456d0 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm 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 >>): arm-linux-gnueabi-ld: drivers/memory/pl353-smc.o: in function `pl353_smc_driver_init': >> pl353-smc.c:(.init.text+0x10): undefined reference to `amba_driver_register' arm-linux-gnueabi-ld: drivers/memory/pl353-smc.o: in function `pl353_smc_driver_exit': >> pl353-smc.c:(.exit.text+0x10): undefined reference to `amba_driver_unregister'