tree: https://github.com/Freescale/linux-fslc 5.10-2.1.x-imx head: f28a9b90c506241e614212f2ce314d8f5460819d commit: 6375d33dce9af7567e197f84b698fb268888eada [1724/9999] soc: imx8m: change to use platform driver config: powerpc64-randconfig-p002-20220120 (https://download.01.org/0day-ci/archive/20220123/202201230158.IOSt99j4-lk...) compiler: powerpc64le-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/Freescale/linux-fslc/commit/6375d33dce9af7567e197f84b6... git remote add freescale-fslc https://github.com/Freescale/linux-fslc git fetch --no-tags freescale-fslc 5.10-2.1.x-imx git checkout 6375d33dce9af7567e197f84b698fb268888eada # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=powerpc SHELL=/bin/bash 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 >>): powerpc64le-linux-ld: warning: discarding dynamic section .glink powerpc64le-linux-ld: warning: discarding dynamic section .plt powerpc64le-linux-ld: linkage table error against `linflex_string_write' powerpc64le-linux-ld: stubs don't match calculated size powerpc64le-linux-ld: can not build stubs: bad value powerpc64le-linux-ld: drivers/soc/imx/soc-imx8m.o: in function `imx8_soc_info': soc-imx8m.c:(.text+0x324): undefined reference to `__arm_smccc_smc' powerpc64le-linux-ld: drivers/soc/imx/soc-imx8m.o: in function `check_m4_enabled': soc-imx8m.c:(.text+0x508): undefined reference to `__arm_smccc_smc' powerpc64le-linux-ld: drivers/tty/serial/fsl_linflexuart.o: in function `linflex_set_termios': fsl_linflexuart.c:(.text+0x1288): undefined reference to `linflex_string_write' --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org