Hi Mario, kernel test robot noticed the following build errors: [auto build test ERROR on pci/next] [also build test ERROR on pci/for-linus tiwai-sound/for-next tiwai-sound/for-linus tip/x86/core linus/master v6.16-rc3 next-20250627] [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#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Mario-Limonciello/PCI-Add-helper-for-checking-if-a-PCI-device-is-a-display-controller/20250627-123349 base: https://git.kernel.org/pub/scm/linux/kernel/git/pci/pci.git next patch link: https://lore.kernel.org/r/20250627043108.3141206-10-superm1%40kernel.org patch subject: [PATCH v6 9/9] PCI: Add a new 'boot_display' attribute config: arc-randconfig-001-20250628 (https://download.01.org/0day-ci/archive/20250628/202506281332.JQb144bv-lkp@xxxxxxxxx/config) compiler: arc-linux-gcc (GCC) 8.5.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250628/202506281332.JQb144bv-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202506281332.JQb144bv-lkp@xxxxxxxxx/ All error/warnings (new ones prefixed by >>): drivers/pci/pci-sysfs.c: In function 'pci_create_sysfs_dev_files': >> drivers/pci/pci-sysfs.c:1701:11: error: implicit declaration of function 'pci_create_boot_display_file'; did you mean 'pci_create_sysfs_dev_files'? [-Werror=implicit-function-declaration] retval = pci_create_boot_display_file(pdev); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ pci_create_sysfs_dev_files drivers/pci/pci-sysfs.c: In function 'pci_remove_sysfs_dev_files': >> drivers/pci/pci-sysfs.c:1719:2: error: implicit declaration of function 'pci_remove_boot_display_file'; did you mean 'pci_remove_sysfs_dev_files'? [-Werror=implicit-function-declaration] pci_remove_boot_display_file(pdev); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ pci_remove_sysfs_dev_files In file included from include/linux/pci.h:37, from drivers/pci/pci-sysfs.c:19: At top level: >> include/linux/device.h:199:26: warning: 'dev_attr_boot_display' defined but not used [-Wunused-variable] struct device_attribute dev_attr_##_name = __ATTR_RO(_name) ^~~~~~~~~ drivers/pci/pci-sysfs.c:688:8: note: in expansion of macro 'DEVICE_ATTR_RO' static DEVICE_ATTR_RO(boot_display); ^~~~~~~~~~~~~~ cc1: some warnings being treated as errors vim +1701 drivers/pci/pci-sysfs.c 1693 1694 int __must_check pci_create_sysfs_dev_files(struct pci_dev *pdev) 1695 { 1696 int retval; 1697 1698 if (!sysfs_initialized) 1699 return -EACCES; 1700 > 1701 retval = pci_create_boot_display_file(pdev); 1702 if (retval) 1703 return retval; 1704 1705 return pci_create_resource_files(pdev); 1706 } 1707 1708 /** 1709 * pci_remove_sysfs_dev_files - cleanup PCI specific sysfs files 1710 * @pdev: device whose entries we should free 1711 * 1712 * Cleanup when @pdev is removed from sysfs. 1713 */ 1714 void pci_remove_sysfs_dev_files(struct pci_dev *pdev) 1715 { 1716 if (!sysfs_initialized) 1717 return; 1718 > 1719 pci_remove_boot_display_file(pdev); 1720 pci_remove_resource_files(pdev); 1721 } 1722 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki