tree: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty.git tty-testing head: 71404f653cf7858fdbb81dd5419a8a4ac4ffa20c commit: 44023b8e1f14bc72bb773dd84dc3563fc912d210 [30/42] tty: serial: meson: Describes the calculation of the UART baud rate clock using a clock frame config: s390-randconfig-p002-20220226 (https://download.01.org/0day-ci/archive/20220226/202202262312.11J4P9pP-lkp@xxxxxxxxx/config) compiler: s390-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://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty.git/commit/?id=44023b8e1f14bc72bb773dd84dc3563fc912d210 git remote add tty https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty.git git fetch --no-tags tty tty-testing git checkout 44023b8e1f14bc72bb773dd84dc3563fc912d210 # 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=s390 SHELL=/bin/bash If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): s390-linux-ld: drivers/tty/serial/meson_uart.o: in function `meson_uart_probe_clocks.constprop.0': >> meson_uart.c:(.text+0xc64): undefined reference to `__clk_get_name' >> s390-linux-ld: meson_uart.c:(.text+0xc80): undefined reference to `devm_clk_hw_register_fixed_factor' >> s390-linux-ld: meson_uart.c:(.text+0xd00): undefined reference to `__clk_get_name' >> s390-linux-ld: meson_uart.c:(.text+0xd68): undefined reference to `__devm_clk_hw_register_divider' >> s390-linux-ld: meson_uart.c:(.text+0xe80): undefined reference to `__devm_clk_hw_register_mux' >> s390-linux-ld: meson_uart.c:(.text+0xe94): undefined reference to `clk_hw_get_rate' >> s390-linux-ld: meson_uart.c:(.text+0xf12): undefined reference to `clk_hw_get_name' s390-linux-ld: meson_uart.c:(.text+0xf70): undefined reference to `__devm_clk_hw_register_divider' --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx