tree: https://git.kernel.org/pub/scm/linux/kernel/git/tnguy/next-queue.git dev-queue head: 3717c1342e201571591f4602ca40b1858f15b47d commit: 5086ff5c93e51e66935ddc19d6e536e92ab41b44 [39/99] i40e: Add restoration of VF MSI-X state during PCI reset config: arm-randconfig-r016-20210622 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project b3634d3e88b7f26534a5057bff182b7dced584fc) 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://git.kernel.org/pub/scm/linux/kernel/git/tnguy/next-queue.git/comm... git remote add tnguy-next-queue https://git.kernel.org/pub/scm/linux/kernel/git/tnguy/next-queue.git git fetch --no-tags tnguy-next-queue dev-queue git checkout 5086ff5c93e51e66935ddc19d6e536e92ab41b44 # 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 errors (new ones prefixed by >>): if (vfdev->is_virtfn && vfdev->physfn == pdev) ~~~~~ ^ 1 error generated. vim +180 drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c 154 155 /** 156 * i40e_restore_all_vfs_msi_state - restore VF MSI state after PF FLR 157 * @pdev: pointer to a pci_dev structure 158 * 159 * Called when recovering from a PF FLR to restore interrupt capability to 160 * the VFs. 161 */ 162 void i40e_restore_all_vfs_msi_state(struct pci_dev *pdev) 163 { 164 struct pci_dev *vfdev; 165 u16 vf_id; 166 int pos; 167 168 /* Continue only if this is a PF */ 169 if (!pdev->is_physfn) 170 return; 171 172 if (!pci_num_vf(pdev)) 173 return; 174 175 pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_SRIOV); 176 if (pos) { 177 pci_read_config_word(pdev, pos + PCI_SRIOV_VF_DID, &vf_id); 178 vfdev = pci_get_device(pdev->vendor, vf_id, NULL); 179 while (vfdev) { 181 pci_restore_msi_state(vfdev); 182 vfdev = pci_get_device(pdev->vendor, vf_id, vfdev); 183 } 184 } 185 } 186 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org