Hi Henrik, Thank you for the patch! Yet something to improve: [auto build test ERROR on net-next/master] url: https://github.com/0day-ci/linux/commits/Henrik-Bjoernlund/net-bridge-cfm-Add-support-for-Connectivity-Fault-Management-CFM/20201001-184031 base: https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git f2e834694b0d92187d889172da842e27829df371 config: i386-randconfig-a004-20200930 (attached as .config) compiler: gcc-9 (Debian 9.3.0-15) 9.3.0 reproduce (this is a W=1 build): # https://github.com/0day-ci/linux/commit/11484cf00dba95e52678e269d11425358dcde310 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Henrik-Bjoernlund/net-bridge-cfm-Add-support-for-Connectivity-Fault-Management-CFM/20201001-184031 git checkout 11484cf00dba95e52678e269d11425358dcde310 # save the attached .config to linux build tree make W=1 ARCH=i386 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot All errors (new ones prefixed by >>): ld: net/core/flow_dissector.o: in function `switchdev_port_obj_get': >> include/net/switchdev.h:441: multiple definition of `switchdev_port_obj_get'; drivers/net/usb/lan78xx.o:include/net/switchdev.h:441: first defined here ld: net/core/dev.o: in function `switchdev_port_obj_get': >> include/net/switchdev.h:441: multiple definition of `switchdev_port_obj_get'; drivers/net/usb/lan78xx.o:include/net/switchdev.h:441: first defined here ld: net/core/dev_ioctl.o: in function `switchdev_port_obj_get': >> include/net/switchdev.h:441: multiple definition of `switchdev_port_obj_get'; drivers/net/usb/lan78xx.o:include/net/switchdev.h:441: first defined here ld: net/ethernet/eth.o: in function `switchdev_port_obj_get': >> include/net/switchdev.h:441: multiple definition of `switchdev_port_obj_get'; drivers/net/usb/lan78xx.o:include/net/switchdev.h:441: first defined here ld: net/ethtool/tunnels.o: in function `switchdev_port_obj_get': >> include/net/switchdev.h:441: multiple definition of `switchdev_port_obj_get'; drivers/net/usb/lan78xx.o:include/net/switchdev.h:441: first defined here ld: net/ipv4/ip_tunnel_core.o: in function `switchdev_port_obj_get': >> include/net/switchdev.h:441: multiple definition of `switchdev_port_obj_get'; drivers/net/usb/lan78xx.o:include/net/switchdev.h:441: first defined here ld: net/ipv4/ipconfig.o: in function `switchdev_port_obj_get': >> include/net/switchdev.h:441: multiple definition of `switchdev_port_obj_get'; drivers/net/usb/lan78xx.o:include/net/switchdev.h:441: first defined here vim +441 include/net/switchdev.h 435 436 int switchdev_port_obj_get(struct net_device *dev, 437 const struct switchdev_obj *obj, 438 struct netlink_ext_ack *extack) 439 { 440 return -EOPNOTSUPP; > 441 } 442 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org