Hi Christian, Thank you for the patch! Yet something to improve: [auto build test ERROR on net/master] url: https://github.com/0day-ci/linux/commits/Christian-Eggers/net-dsa-point-o... base: https://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git 2ecbc1f684482b4ed52447a39903bd9b0f222898 config: xtensa-allyesconfig (attached as .config) compiler: xtensa-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/aaa07cad29bf365264beb2c2e2668db83... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Christian-Eggers/net-dsa-point-out-the-tail-taggers/20201017-003007 git checkout aaa07cad29bf365264beb2c2e2668db83ca31923 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=xtensa 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 >>): 126 | .tail_tag = true, | ^~~~~~~~ 126 | .tail_tag = true, | ^~~~ net/dsa/tag_ksz.c:126:14: note: (near initialization for 'ksz8795_netdev_ops.name') net/dsa/tag_ksz.c:126:14: note: (near initialization for 'ksz8795_netdev_ops.name') net/dsa/tag_ksz.c:203:3: error: 'const struct dsa_device_ops' has no member named 'tail_tag' 203 | .tail_tag = true, | ^~~~~~~~ net/dsa/tag_ksz.c:203:14: warning: initialization of 'const char *' from 'int' makes pointer from integer without a cast [-Wint-conversion] 203 | .tail_tag = true, | ^~~~ net/dsa/tag_ksz.c:203:14: note: (near initialization for 'ksz9477_netdev_ops.name') net/dsa/tag_ksz.c:203:14: warning: initialized field overwritten [-Woverride-init] net/dsa/tag_ksz.c:203:14: note: (near initialization for 'ksz9477_netdev_ops.name') vim +126 net/dsa/tag_ksz.c 119 120 static const struct dsa_device_ops ksz8795_netdev_ops = { 121 .name = "ksz8795", 122 .proto = DSA_TAG_PROTO_KSZ8795, 123 .xmit = ksz8795_xmit, 124 .rcv = ksz8795_rcv, 125 .overhead = KSZ_INGRESS_TAG_LEN, 127 }; 128 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org