tree: git://git.armlinux.org.uk/~rmk/linux-arm.git zii head: e2b78f9343e58d06b9b8561ade72f4d5aeb43e4f commit: aa6c6c92d19e81faebd965a56b582fdc7371126c [78/128] net: dsa: ocelot: convert to phylink_generic_validate() config: arm-randconfig-r025-20211118 (attached as .config) 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 # install arm cross compiling tool for clang build # apt-get install binutils-arm-linux-gnueabi git remote add arm git://git.armlinux.org.uk/~rmk/linux-arm.git git fetch --no-tags arm zii git checkout aa6c6c92d19e81faebd965a56b582fdc7371126c # save the attached .config to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm SHELL=/bin/bash drivers/net/dsa/ocelot/ 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 >>): __set_bit(ocelot_port->phy_mode, ^ 1 error generated. vim +/ocelot_port +940 drivers/net/dsa/ocelot/felix_vsc9959.c 936 937 static void vsc9959_phylink_get_caps(struct ocelot *ocelot, int port, 938 struct phylink_config *config) 939 { 941 config->supported_interfaces); 942 943 config->mac_capabilities = MAC_ASYM_PAUSE | MAC_SYM_PAUSE | 944 MAC_10 | MAC_100 | MAC_1000 | MAC_2500FD; 945 } 946 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org