Hi,

[auto build test ERROR on pm/linux-next]
[also build test ERROR on v4.7-rc2 next-20160608]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Rui-Wang/x86-ioapic-Support-hot-removal-of-IOAPICs-present-during-boot/20160608-151907
base:   https://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git linux-next
config: mips-txx9 (attached as .config)
compiler: mips-linux-gnu-gcc (Debian 5.3.1-8) 5.3.1 20160205
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=mips 

All errors (new ones prefixed by >>):

   drivers/pci/setup-bus.c: In function 'pci_assign_unassigned_resources':
>> drivers/pci/setup-bus.c:1785:3: error: implicit declaration of function 'acpi_ioapic_add' [-Werror=implicit-function-declaration]
      acpi_ioapic_add(ACPI_HANDLE(root_bus->bridge));
      ^
   cc1: some warnings being treated as errors

vim +/acpi_ioapic_add +1785 drivers/pci/setup-bus.c

  1779	void __init pci_assign_unassigned_resources(void)
  1780	{
  1781		struct pci_bus *root_bus;
  1782	
  1783		list_for_each_entry(root_bus, &pci_root_buses, node) {
  1784			pci_assign_unassigned_root_bus_resources(root_bus);
> 1785			acpi_ioapic_add(ACPI_HANDLE(root_bus->bridge));
  1786		}
  1787	}
  1788	

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