tree: https://git.kernel.org/pub/scm/linux/kernel/git/leon/linux-rdma.git devlink head: 75088f5c533815580092fd7dca787c06e75ba7ba commit: 3c73f365d81cf18adf846a4ef36e605ad52acd0a [4/16] devlink: Clean registration of devlink port config: x86_64-buildonly-randconfig-r002-20211109 (attached as .config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 0d182d9d1e09dea0f78bcc3afa91946c6f97c23e) 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 git checkout 3c73f365d81cf18adf846a4ef36e605ad52acd0a # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=x86_64 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 >>): struct device *dev; ^ drivers/net/ethernet/intel/ice/ice_devlink.c:550:17: error: variable 'dev' set but not used [-Werror,-Wunused-but-set-variable] struct device *dev; ^ 2 errors generated. vim +/dev +501 drivers/net/ethernet/intel/ice/ice_devlink.c 1adf7ead820409 Jacob Keller 2020-03-11 486 1adf7ead820409 Jacob Keller 2020-03-11 487 /** 2ae0aa4758b0f4 Wojciech Drewek 2021-08-19 488 * ice_devlink_create_pf_port - Create a devlink port for this PF 2ae0aa4758b0f4 Wojciech Drewek 2021-08-19 489 * @pf: the PF to create a devlink port for 1adf7ead820409 Jacob Keller 2020-03-11 490 * 2ae0aa4758b0f4 Wojciech Drewek 2021-08-19 491 * Create and register a devlink_port for this PF. 1adf7ead820409 Jacob Keller 2020-03-11 492 * 1adf7ead820409 Jacob Keller 2020-03-11 493 * Return: zero on success or an error code on failure. 1adf7ead820409 Jacob Keller 2020-03-11 494 */ 2ae0aa4758b0f4 Wojciech Drewek 2021-08-19 495 int ice_devlink_create_pf_port(struct ice_pf *pf) 1adf7ead820409 Jacob Keller 2020-03-11 496 { 71ad8d55f8e5ea Danielle Ratson 2020-07-09 497 struct devlink_port_attrs attrs = {}; 2ae0aa4758b0f4 Wojciech Drewek 2021-08-19 498 struct devlink_port *devlink_port; 48d40025b5392d Jacob Keller 2020-10-07 499 struct devlink *devlink; 2ae0aa4758b0f4 Wojciech Drewek 2021-08-19 500 struct ice_vsi *vsi; 48d40025b5392d Jacob Keller 2020-10-07 @501 struct device *dev; 1adf7ead820409 Jacob Keller 2020-03-11 502 48d40025b5392d Jacob Keller 2020-10-07 503 dev = ice_pf_to_dev(pf); 2ae0aa4758b0f4 Wojciech Drewek 2021-08-19 504 2ae0aa4758b0f4 Wojciech Drewek 2021-08-19 505 devlink_port = &pf->devlink_port; 2ae0aa4758b0f4 Wojciech Drewek 2021-08-19 506 2ae0aa4758b0f4 Wojciech Drewek 2021-08-19 507 vsi = ice_get_main_vsi(pf); 2ae0aa4758b0f4 Wojciech Drewek 2021-08-19 508 if (!vsi) 2ae0aa4758b0f4 Wojciech Drewek 2021-08-19 509 return -EIO; 1adf7ead820409 Jacob Keller 2020-03-11 510 71ad8d55f8e5ea Danielle Ratson 2020-07-09 511 attrs.flavour = DEVLINK_PORT_FLAVOUR_PHYSICAL; 2ae0aa4758b0f4 Wojciech Drewek 2021-08-19 512 attrs.phys.port_number = pf->hw.bus.func; 2ae0aa4758b0f4 Wojciech Drewek 2021-08-19 513 devlink_port_attrs_set(devlink_port, &attrs); 2ae0aa4758b0f4 Wojciech Drewek 2021-08-19 514 devlink = priv_to_devlink(pf); 2ae0aa4758b0f4 Wojciech Drewek 2021-08-19 515 3c73f365d81cf1 Leon Romanovsky 2021-11-03 516 devlink_port_register(devlink, devlink_port, vsi->idx); 2ae0aa4758b0f4 Wojciech Drewek 2021-08-19 517 return 0; 2ae0aa4758b0f4 Wojciech Drewek 2021-08-19 518 } 2ae0aa4758b0f4 Wojciech Drewek 2021-08-19 519 :::::: The code at line 501 was first introduced by commit :::::: 48d40025b5392dc9010eec3c99a5a4b6e5a29d1e ice: refactor devlink_port to be per-VSI :::::: TO: Jacob Keller <jacob.e.keller(a)intel.com&gt; :::::: CC: Jakub Kicinski <kuba(a)kernel.org&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org