Hi zhichang.yuan, [auto build test ERROR on linus/master] [also build test ERROR on v4.8-rc6 next-20160914] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] [Suggest to use git(>=2.9.0) format-patch --base= (or --base=auto for convenience) to record what (public, well-known) commit your patch series was built on] [Check https://git-scm.com/docs/git-format-patch for more information] url: https://github.com/0day-ci/linux/commits/Zhichang-Yuan/ARM64-LPC-legacy-ISA-I-O-support/20160914-202858 config: openrisc-or1ksim_defconfig (attached as .config) compiler: or32-linux-gcc (GCC) 4.5.1-or32-1.0rc1 reproduce: wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree make.cross ARCH=openrisc All errors (new ones prefixed by >>): drivers/of/address.c: In function '__of_address_to_resource': >> drivers/of/address.c:702:5: error: implicit declaration of function 'of_bus_pci_match' vim +/of_bus_pci_match +702 drivers/of/address.c 696 return -EINVAL; 697 /* 698 * special processing for non-pci device gurantee the linux start pio 699 * is not ZERO. Otherwise, some drivers' initialization will fail. 700 */ 701 if (!port && (!IS_ENABLED(CONFIG_OF_ADDRESS_PCI) || > 702 !of_bus_pci_match(dev))) 703 port += 1; 704 705 r->start = port; --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation