Hi Hans, kernel test robot noticed the following build errors: [auto build test ERROR on a1cffe8cc8aef85f1b07c4464f0998b9785b795a] url: https://github.com/intel-lab-lkp/linux/commits/Hans-Zhang/PCI-Introduce-generic-capability-search-functions/20250324-005300 base: a1cffe8cc8aef85f1b07c4464f0998b9785b795a patch link: https://lore.kernel.org/r/20250323164852.430546-4-18255117159%40163.com patch subject: [v6 3/5] PCI: cadence: Use common PCI host bridge APIs for finding the capabilities config: csky-randconfig-001-20250324 (https://download.01.org/0day-ci/archive/20250324/202503240212.GtZsXgoK-lkp@xxxxxxxxx/config) compiler: csky-linux-gcc (GCC) 14.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250324/202503240212.GtZsXgoK-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/202503240212.GtZsXgoK-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): drivers/pci/controller/cadence/pcie-cadence.c: In function 'cdns_pcie_find_capability': >> drivers/pci/controller/cadence/pcie-cadence.c:28:16: error: implicit declaration of function 'pci_host_bridge_find_capability'; did you mean 'cdns_pcie_find_capability'? [-Wimplicit-function-declaration] 28 | return pci_host_bridge_find_capability(pcie, cdns_pcie_read_cfg, cap); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | cdns_pcie_find_capability drivers/pci/controller/cadence/pcie-cadence.c: In function 'cdns_pcie_find_ext_capability': >> drivers/pci/controller/cadence/pcie-cadence.c:33:16: error: implicit declaration of function 'pci_host_bridge_find_ext_capability'; did you mean 'cdns_pcie_find_ext_capability'? [-Wimplicit-function-declaration] 33 | return pci_host_bridge_find_ext_capability(pcie, cdns_pcie_read_cfg, cap); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | cdns_pcie_find_ext_capability vim +28 drivers/pci/controller/cadence/pcie-cadence.c 25 26 u8 cdns_pcie_find_capability(struct cdns_pcie *pcie, u8 cap) 27 { > 28 return pci_host_bridge_find_capability(pcie, cdns_pcie_read_cfg, cap); 29 } 30 31 u16 cdns_pcie_find_ext_capability(struct cdns_pcie *pcie, u8 cap) 32 { > 33 return pci_host_bridge_find_ext_capability(pcie, cdns_pcie_read_cfg, cap); 34 } 35 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki