tree: https://git.kernel.org/pub/scm/linux/kernel/git/leon/linux-rdma.git vbus head: 36d12e12aaa13ac7c988384b60bbbf605159ccef commit: 40330253661ca92469d89dedde5b04407a959064 [11/15] net/mlx5e: Connect ethernet part to ancillary bus config: s390-defconfig (attached as .config) compiler: s390-linux-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/leon/linux-rdma.git/commi... git remote add leon-rdma https://git.kernel.org/pub/scm/linux/kernel/git/leon/linux-rdma.git git fetch --no-tags leon-rdma vbus git checkout 40330253661ca92469d89dedde5b04407a959064 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=s390 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 >>): drivers/net/ethernet/mellanox/mlx5/core/en_main.c: In function 'mlx5e_init': 5538 | ret = mlx5e_rep_init(); | ^~~~~~~~~~~~~~ | mlx5e_nic_init 5544 | mlx5e_rep_cleanup(); | ^~~~~~~~~~~~~~~~~ | mlx5e_nic_cleanup cc1: some warnings being treated as errors vim +5538 drivers/net/ethernet/mellanox/mlx5/core/en_main.c 5531 5532 int mlx5e_init(void) 5533 { 5534 int ret; 5535 5536 mlx5e_ipsec_build_inverse_table(); 5537 mlx5e_build_ptys2ethtool_map(); 5539 if (ret) 5540 return ret; 5541 5542 ret = ancillary_driver_register(&mlx5e_driver); 5543 if (ret) 5545 return ret; 5546 } 5547 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org