Hi Igor, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on net-next/master] [also build test WARNING on next-20200519] [cannot apply to net/master linus/master ipvs/master v5.7-rc6] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system. BTW, we also suggest to use '--base' option to specify the base tree in git format-patch, please see https://stackoverflow.com/a/37406982] url: https://github.com/0day-ci/linux/commits/Igor-Russkikh/net-atlantic-QoS-i... base: https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git 4f65e2f483b6f764c15094d14dd53dda048a4048 config: alpha-allyesconfig (attached as .config) compiler: alpha-linux-gcc (GCC) 9.3.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=alpha If you fix the issue, kindly add following tag as appropriate Reported-by: kbuild test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>, old ones prefixed by <<): 951 | unsigned int ptp_ring_idx(const enum aq_tc_mode tc_mode) | ^~~~~~~~~~~~ vim +/ptp_ring_idx +951 drivers/net/ethernet/aquantia/atlantic/aq_ptp.c 947 948 /* Index must be 8 (8 TCs) or 16 (4 TCs). 949 * It depends on Traffic Class mode. 950 */ 952 { 953 if (tc_mode == AQ_TC_MODE_8TCS) 954 return PTP_8TC_RING_IDX; 955 956 return PTP_4TC_RING_IDX; 957 } 958 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org