tree: https://git.kernel.org/pub/scm/linux/kernel/git/leon/linux-rdma.git devlink-core head: 84f6d5ca4cad2a2c56535c3c2c3134785250d975 commit: 0a71812973423682fac4238aa83ae41a852ac73f [13/19] devlink: Remove duplicated registration check config: arm64-allyesconfig (attached as .config) compiler: aarch64-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://git.kernel.org/pub/scm/linux/kernel/git/leon/linux-rdma.git/commi... git remote add leon-rdma https://git.kernel.org/pub/scm/linux/kernel/git/leon/linux-rdma.git git fetch --no-tags leon-rdma devlink-core git checkout 0a71812973423682fac4238aa83ae41a852ac73f # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross W=1 ARCH=arm64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): drivers/net/ethernet/ti/am65-cpsw-nuss.c: In function 'am65_cpsw_unregister_devlink_ports': 2398 | if (dl_port->registered) | ^~ vim +2398 drivers/net/ethernet/ti/am65-cpsw-nuss.c 58356eb31d60dd Vignesh Raghavendra 2021-02-11 2387 58356eb31d60dd Vignesh Raghavendra 2021-02-11 2388 static void am65_cpsw_unregister_devlink_ports(struct am65_cpsw_common *common) 58356eb31d60dd Vignesh Raghavendra 2021-02-11 2389 { 58356eb31d60dd Vignesh Raghavendra 2021-02-11 2390 struct devlink_port *dl_port; 58356eb31d60dd Vignesh Raghavendra 2021-02-11 2391 struct am65_cpsw_port *port; 58356eb31d60dd Vignesh Raghavendra 2021-02-11 2392 int i; 58356eb31d60dd Vignesh Raghavendra 2021-02-11 2393 58356eb31d60dd Vignesh Raghavendra 2021-02-11 2394 for (i = 1; i <= common->port_num; i++) { 58356eb31d60dd Vignesh Raghavendra 2021-02-11 2395 port = am65_common_get_port(common, i); 58356eb31d60dd Vignesh Raghavendra 2021-02-11 2396 dl_port = &port->devlink_port; 58356eb31d60dd Vignesh Raghavendra 2021-02-11 2397 58356eb31d60dd Vignesh Raghavendra 2021-02-11 @2398 if (dl_port->registered) 58356eb31d60dd Vignesh Raghavendra 2021-02-11 2399 devlink_port_unregister(dl_port); 58356eb31d60dd Vignesh Raghavendra 2021-02-11 2400 } 58356eb31d60dd Vignesh Raghavendra 2021-02-11 2401 } 58356eb31d60dd Vignesh Raghavendra 2021-02-11 2402 :::::: The code at line 2398 was first introduced by commit :::::: 58356eb31d60dd8994e5067096ef1a09e4d9ceda net: ti: am65-cpsw-nuss: Add devlink support :::::: TO: Vignesh Raghavendra <vigneshr(a)ti.com&gt; :::::: CC: David S. Miller <davem(a)davemloft.net&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org