Hi "Saheed, [FYI, it's a private test report for your RFC patch.] [auto build test WARNING on helgaas-pci/next] [also build test WARNING on v5.15-rc1 next-20210916] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/Saheed-O-Bolarinwa/PCI-ASPM-Remo... base: https://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci.git next config: i386-buildonly-randconfig-r002-20210916 (attached as .config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project c8b3d7d6d6de37af68b2f379d0e37304f78e115f) 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://github.com/0day-ci/linux/commit/a2a494c1e1531309518be74ed2e406334... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Saheed-O-Bolarinwa/PCI-ASPM-Remove-struct-pcie_link_state-parent/20210916-175210 git checkout a2a494c1e1531309518be74ed2e406334b716fbe # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=i386 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 >>): dev->link_state->aspm_capable = link->aspm_support; ^~~~ drivers/pci/pcie/aspm.c:960:30: note: initialize the variable 'link' to silence this warning struct pcie_link_state *link; ^ = NULL 1 warning generated. vim +/link +963 drivers/pci/pcie/aspm.c 954 955 /* Recheck latencies and update aspm_capable for links under the root */ 956 static void pcie_update_aspm_capable(struct pcie_link_state *root) 957 { 958 struct pci_dev *dev; 959 struct pci_bus *rootbus = root->pdev->bus; 960 struct pcie_link_state *link; 961 BUG_ON(root->pdev->bus->parent->self); 962 list_for_each_entry(dev, &rootbus->devices, bus_list) { 964 } 965 966 list_for_each_entry(dev, &rootbus->devices, bus_list) { 967 struct pci_dev *child; 968 struct pci_bus *linkbus = dev->subordinate; 969 970 list_for_each_entry(child, &linkbus->devices, bus_list) { 971 if ((pci_pcie_type(child) != PCI_EXP_TYPE_ENDPOINT) && 972 (pci_pcie_type(child) != PCI_EXP_TYPE_LEG_END)) 973 continue; 974 pcie_aspm_check_latency(child); 975 } 976 } 977 } 978 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org