[powerpc:next-test 14/40] arch/powerpc/kernel/pci_32.c:233:5: error: no previous prototype for 'pci_device_from_OF_node'

[kernel test robot <lkp@intel.com>]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git next-test
head:   9ffcf6a19dbb2a24de2c2d7b2af1e130986cd565
commit: 869363998da87c80c16ff1221e95b41b2d3cceb2 [14/40] powerpc/pci: Allow to disable filling deprecated pci-OF-bus-map
config: powerpc-buildonly-randconfig-r006-20230202 (https://download.01.org/0day-ci/archive/20230203/202302030001.HQPCI490-lkp@intel.com/config)
compiler: powerpc-linux-gcc (GCC) 12.1.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/commit/?id=869363998da87c80c16ff1221e95b41b2d3cceb2
        git remote add powerpc https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git
        git fetch --no-tags powerpc next-test
        git checkout 869363998da87c80c16ff1221e95b41b2d3cceb2
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=powerpc olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=powerpc SHELL=/bin/bash arch/powerpc/kernel/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

>> arch/powerpc/kernel/pci_32.c:233:5: error: no previous prototype for 'pci_device_from_OF_node' [-Werror=missing-prototypes]
     233 | int pci_device_from_OF_node(struct device_node *node, u8 *bus, u8 *devfn)
         |     ^~~~~~~~~~~~~~~~~~~~~~~
   cc1: all warnings being treated as errors


vim +/pci_device_from_OF_node +233 arch/powerpc/kernel/pci_32.c

   229	
   230	/*
   231	 * Returns the PCI device matching a given OF node without pci_to_OF_bus_map
   232	 */
 > 233	int pci_device_from_OF_node(struct device_node *node, u8 *bus, u8 *devfn)
   234	{
   235		const __be32 *reg;
   236		int size;
   237	
   238		/* Check if it might have a chance to be a PCI device */
   239		if (!pci_find_hose_for_OF_device(node))
   240			return -ENODEV;
   241	
   242		reg = of_get_property(node, "reg", &size);
   243		if (!reg || size < 5 * sizeof(u32))
   244			return -ENODEV;
   245	
   246		*bus = (be32_to_cpup(&reg[0]) >> 16) & 0xff;
   247		*devfn = (be32_to_cpup(&reg[0]) >> 8) & 0xff;
   248	
   249		return 0;
   250	}
   251	

-- 
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