tree: https://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci.git pci/misc head: 81e2ce35df9102989cefe180f41d78dd7fb8c9b9 commit: 81e2ce35df9102989cefe180f41d78dd7fb8c9b9 [7/7] PCI: Sync __pci_register_driver() stub for CONFIG_PCI=n config: i386-tinyconfig (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce (this is a W=1 build): # https://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci.git/commit/?i... git remote add pci https://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci.git git fetch --no-tags pci pci/misc git checkout 81e2ce35df9102989cefe180f41d78dd7fb8c9b9 # save the attached .config to linux build tree mkdir build_dir make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash arch/x86/kernel/ 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 >>): In file included from arch/x86/kernel/setup.c:18: include/linux/pci.h: In function '__pci_register_driver': 1725 | static inline int __must_check __pci_register_driver(struct pci_driver *, | ^~~~~~~~~~~~~~~~~~~ include/linux/pci.h:1726:12: error: parameter name omitted 1726 | struct module *, | ^~~~~~~~~~~~~~~ -- In file included from arch/x86/kernel/cpu/cacheinfo.c:17: include/linux/pci.h: In function '__pci_register_driver': 1725 | static inline int __must_check __pci_register_driver(struct pci_driver *, | ^~~~~~~~~~~~~~~~~~~ include/linux/pci.h:1726:12: error: parameter name omitted 1726 | struct module *, | ^~~~~~~~~~~~~~~ arch/x86/kernel/cpu/cacheinfo.c: In function 'init_intel_cacheinfo': arch/x86/kernel/cpu/cacheinfo.c:727:26: warning: variable 'l3_id' set but not used [-Wunused-but-set-variable] 727 | unsigned int l2_id = 0, l3_id = 0, num_threads_sharing, index_msb; | ^~~~~ arch/x86/kernel/cpu/cacheinfo.c:727:15: warning: variable 'l2_id' set but not used [-Wunused-but-set-variable] 727 | unsigned int l2_id = 0, l3_id = 0, num_threads_sharing, index_msb; | ^~~~~ vim +1725 include/linux/pci.h 1718 1719 static inline void pci_set_master(struct pci_dev *dev) { } 1720 static inline int pci_enable_device(struct pci_dev *dev) { return -EIO; } 1721 static inline void pci_disable_device(struct pci_dev *dev) { } 1722 static inline int pcim_enable_device(struct pci_dev *pdev) { return -EIO; } 1723 static inline int pci_assign_resource(struct pci_dev *dev, int i) 1724 { return -EBUSY; } 1726 struct module *, 1727 const char *mod_name) 1728 { return 0; } 1729 static inline int pci_register_driver(struct pci_driver *drv) 1730 { return 0; } 1731 static inline void pci_unregister_driver(struct pci_driver *drv) { } 1732 static inline u8 pci_find_capability(struct pci_dev *dev, int cap) 1733 { return 0; } 1734 static inline int pci_find_next_capability(struct pci_dev *dev, u8 post, 1735 int cap) 1736 { return 0; } 1737 static inline int pci_find_ext_capability(struct pci_dev *dev, int cap) 1738 { return 0; } 1739 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org