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: arm-randconfig-r025-20210318 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project fcc1ce00931751ac02498986feb37744e9ace8de) 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 # install arm cross compiling tool for clang build # apt-get install binutils-arm-linux-gnueabi # https://github.com/0day-ci/linux/commit/a25b1e23ecf26f2dc45247ebcf4ff5bde... 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 a25b1e23ecf26f2dc45247ebcf4ff5bde213ac42 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm 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 >>): In file included from net/bridge/br_device.c:19: In file included from net/bridge/br_private.h:13: int switchdev_bridge_port_offload(struct net_device *dev, ^ include/linux/if_bridge.h:204:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int switchdev_bridge_port_offload(struct net_device *dev, ^ static int switchdev_bridge_port_unoffload(struct net_device *dev) ^ include/linux/if_bridge.h:210:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int switchdev_bridge_port_unoffload(struct net_device *dev) ^ static } ^ 2 warnings and 1 error generated. -- In file included from net/bridge/br_netlink_tunnel.c:18: In file included from net/bridge/br_private.h:13: int switchdev_bridge_port_offload(struct net_device *dev, ^ include/linux/if_bridge.h:204:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int switchdev_bridge_port_offload(struct net_device *dev, ^ static int switchdev_bridge_port_unoffload(struct net_device *dev) ^ include/linux/if_bridge.h:210:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int switchdev_bridge_port_unoffload(struct net_device *dev) ^ static } ^ net/bridge/br_netlink_tunnel.c:29:6: warning: no previous prototype for function 'vlan_tunid_inrange' [-Wmissing-prototypes] bool vlan_tunid_inrange(const struct net_bridge_vlan *v_curr, ^ net/bridge/br_netlink_tunnel.c:29:1: note: declare 'static' if the function is not intended to be used outside of this translation unit bool vlan_tunid_inrange(const struct net_bridge_vlan *v_curr, ^ static net/bridge/br_netlink_tunnel.c:196:5: warning: no previous prototype for function 'br_vlan_tunnel_info' [-Wmissing-prototypes] int br_vlan_tunnel_info(const struct net_bridge_port *p, int cmd, ^ net/bridge/br_netlink_tunnel.c:196:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int br_vlan_tunnel_info(const struct net_bridge_port *p, int cmd, ^ static 4 warnings and 1 error generated. vim +212 include/linux/if_bridge.h 198 199 #if IS_ENABLED(CONFIG_BRIDGE) && IS_ENABLED(CONFIG_NET_SWITCHDEV) 200 int switchdev_bridge_port_offload(struct net_device *dev, 201 struct netlink_ext_ack *extack); 202 int switchdev_bridge_port_unoffload(struct net_device *dev); 203 #else 205 struct netlink_ext_ack *extack) 206 { 207 return 0; 208 } 209 211 { 213 #endif 214 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org