Hi Vladimir, [FYI, it's a private test report for your RFC patch.] [auto build test ERROR on net-next/master] url: https://github.com/0day-ci/linux/commits/Vladimir-Oltean/Better-support-f... base: https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git 31222162557ca85808b9985de7e519041561f455 config: microblaze-randconfig-r031-20210318 (attached as .config) compiler: microblaze-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://github.com/0day-ci/linux/commit/cb132bd734dc880ec90ec12980b6567ef... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Vladimir-Oltean/Better-support-for-sandwiched-LAGs-with-bridge-and-DSA/20210319-072218 git checkout cb132bd734dc880ec90ec12980b6567efa0819fd # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=microblaze If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All error/warnings (new ones prefixed by >>): net/dsa/port.c: In function 'dsa_port_inherit_brport_flags': 152 | struct net_device *brport_dev = dsa_port_to_bridge_port(dp); | ^~~~~~~~~~~~~~~~~~~~~~~ | dsa_port_bridge_join cc1: some warnings being treated as errors vim +152 net/dsa/port.c 146 147 static int dsa_port_inherit_brport_flags(struct dsa_port *dp, 148 struct netlink_ext_ack *extack) 149 { 150 const unsigned long mask = BR_LEARNING | BR_FLOOD | BR_MCAST_FLOOD | 151 BR_BCAST_FLOOD; 153 int flag, err; 154 155 for_each_set_bit(flag, &mask, 32) { 156 struct switchdev_brport_flags flags = {0}; 157 158 flags.mask = BIT(flag); 159 160 if (br_port_flag_is_set(brport_dev, BIT(flag))) 161 flags.val = BIT(flag); 162 163 err = dsa_port_bridge_flags(dp, flags, extack); 164 if (err && err != -EOPNOTSUPP) 165 return err; 166 } 167 168 return 0; 169 } 170 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org