tree: https://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/next-queue.git 100GbE head: 2c89ef0b849b5d1bdba9bcc93a70f52c4752bc23 commit: 2c89ef0b849b5d1bdba9bcc93a70f52c4752bc23 [15/15] idpf: Introduce idpf driver config: x86_64-allyesconfig (attached as .config) compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project 487ca07fcc75d52755c9fe2ee05bcb3b6eeeec44) 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 x86_64 cross compiling tool for clang build # apt-get install binutils-x86-64-linux-gnu git checkout 2c89ef0b849b5d1bdba9bcc93a70f52c4752bc23 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross 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 warnings (new ones prefixed by >>, old ones prefixed by <<): int idpf_probe(struct pci_dev *pdev, ^ drivers/net/ethernet/intel/idpf/idpf_main.c:46:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int idpf_probe(struct pci_dev *pdev, ^ static 1 warning generated. vim +/idpf_probe +46 drivers/net/ethernet/intel/idpf/idpf_main.c 38 39 /** 40 * idpf_probe - Device initialization routine 41 * @pdev: PCI device information struct 42 * @ent: entry in idpf_pci_tbl 43 * 44 * Returns 0 on success, negative on failure 45 */ 47 const struct pci_device_id __always_unused *ent) 48 { 49 struct iecm_adapter *adapter = NULL; 50 int err; 51 52 err = pcim_enable_device(pdev); 53 if (err) 54 return err; 55 56 adapter = kzalloc(sizeof(*adapter), GFP_KERNEL); 57 if (!adapter) 58 return -ENOMEM; 59 60 adapter->dev_ops.reg_ops_init = idpf_reg_ops_init; 61 62 err = iecm_probe(pdev, ent, adapter); 63 if (err) 64 kfree(adapter); 65 66 return err; 67 } 68 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org