tree: git://github.com/linux-chenxing/linux.git mstar_v5_14_rebase head: 651efd0e52f225e60faa8b30f9768021e2104d3c commit: 74407bf8925da5c839bb1d99c26a932b859dd868 [266/352] clk: mux core: allow setting the mux config: s390-randconfig-c003-20210719 (attached as .config) compiler: s390-linux-gcc (GCC) 10.3.0 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/linux-chenxing/linux/commit/74407bf8925da5c839bb1d99c2... git remote add linux-chenxing git://github.com/linux-chenxing/linux.git git fetch --no-tags linux-chenxing mstar_v5_14_rebase git checkout 74407bf8925da5c839bb1d99c26a932b859dd868 # save the attached .config to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-10.3.0 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(a)intel.com&gt; All errors (new ones prefixed by >>): s390-linux-ld: drivers/clk/mstar/clk-msc313-mux.o: in function `msc313_mux_deglitch_determine_rate': clk-msc313-mux.c:(.text+0x1a8): undefined reference to `clk_hw_get_flags' s390-linux-ld: drivers/clk/mstar/clk-msc313-mux.o: in function `msc313_mux_mux_determine_rate': clk-msc313-mux.c:(.text+0x1e8): undefined reference to `clk_hw_get_flags' s390-linux-ld: clk-msc313-mux.c:(.text+0x200): undefined reference to `clk_mux_determine_rate_flags' s390-linux-ld: drivers/clk/mstar/clk-msc313-mux.o: in function `msc313_mux_register_muxes': clk-msc313-mux.c:(.text+0x526): undefined reference to `devm_clk_hw_register' s390-linux-ld: clk-msc313-mux.c:(.text+0x596): undefined reference to `devm_clk_hw_register' --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org