tree: https://git.kernel.org/pub/scm/linux/kernel/git/tglx/devel.git msi head: 2d9ab27714e1576db18b1ee323eaae9886e16006 commit: 5e32e214c6eeda4237b4fb01cd77c6c247465e0c [18/91] PCI/MSI: Split out irqdomain code config: mips-randconfig-r035-20211123 (https://download.01.org/0day-ci/archive/20211123/202111231428.RmNJuNXe-lk...) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project c133fb321f7ca6083ce15b6aa5bf89de6600e649) 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 mips cross compiling tool for clang build # apt-get install binutils-mips-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/tglx/devel.git/commit/?id... git remote add tglx-devel https://git.kernel.org/pub/scm/linux/kernel/git/tglx/devel.git git fetch --no-tags tglx-devel msi git checkout 5e32e214c6eeda4237b4fb01cd77c6c247465e0c # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=mips 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 >>): In file included from drivers/pci/msi/legacy.c:7: include/linux/msi.h:391:65: warning: declaration of 'struct cpumask' will not be visible outside of this function [-Wvisibility] int msi_domain_set_affinity(struct irq_data *data, const struct cpumask *mask, ^ drivers/pci/msi/legacy.c:48:20: error: use of undeclared identifier 'entry' for (i = 0; i < entry->nvec_used; i++) ^ int pci_msi_legacy_setup_msi_irqs(struct pci_dev *dev, int nvec, int type) ^ drivers/pci/msi/legacy.c:54:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int pci_msi_legacy_setup_msi_irqs(struct pci_dev *dev, int nvec, int type) ^ static void pci_msi_legacy_teardown_msi_irqs(struct pci_dev *dev) ^ drivers/pci/msi/legacy.c:59:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void pci_msi_legacy_teardown_msi_irqs(struct pci_dev *dev) ^ static 3 warnings and 1 error generated. vim +/pci_msi_legacy_setup_msi_irqs +54 drivers/pci/msi/legacy.c 53 55 { 56 return arch_setup_msi_irqs(dev, nvec, type); 57 } 58 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org