[ammarfaizi2-block:robh/linux/dt/pop-pci-nodes 2/2] drivers/pci/of.c:29:6: warning: no previous prototype for 'add_bus_props'

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

tree:   https://github.com/ammarfaizi2/linux-block robh/linux/dt/pop-pci-nodes
head:   b9198a9525a97d05b0bb2a7282fede92d7d2d93d
commit: b9198a9525a97d05b0bb2a7282fede92d7d2d93d [2/2] PCI: Create DT nodes if they don't exist
config: ia64-buildonly-randconfig-r006-20220405 (https://download.01.org/0day-ci/archive/20220406/202204061333.cVi47HBi-lkp@intel.com/config)
compiler: ia64-linux-gcc (GCC) 11.2.0
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://github.com/ammarfaizi2/linux-block/commit/b9198a9525a97d05b0bb2a7282fede92d7d2d93d
        git remote add ammarfaizi2-block https://github.com/ammarfaizi2/linux-block
        git fetch --no-tags ammarfaizi2-block robh/linux/dt/pop-pci-nodes
        git checkout b9198a9525a97d05b0bb2a7282fede92d7d2d93d
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=ia64 SHELL=/bin/bash drivers/pci/

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

All warnings (new ones prefixed by >>):

   In file included from arch/ia64/include/asm/pgtable.h:153,
                    from include/linux/pgtable.h:6,
                    from arch/ia64/include/asm/uaccess.h:40,
                    from include/linux/uaccess.h:11,
                    from arch/ia64/include/asm/sections.h:11,
                    from include/linux/interrupt.h:21,
                    from include/linux/pci.h:38,
                    from drivers/pci/of.c:11:
   arch/ia64/include/asm/mmu_context.h: In function 'reload_context':
   arch/ia64/include/asm/mmu_context.h:127:48: warning: variable 'old_rr4' set but not used [-Wunused-but-set-variable]
     127 |         unsigned long rr0, rr1, rr2, rr3, rr4, old_rr4;
         |                                                ^~~~~~~
   drivers/pci/of.c: At top level:
   drivers/pci/of.c:18:21: warning: no previous prototype for 'make_node' [-Wmissing-prototypes]
      18 | struct device_node *make_node(void)
         |                     ^~~~~~~~~
>> drivers/pci/of.c:29:6: warning: no previous prototype for 'add_bus_props' [-Wmissing-prototypes]
      29 | void add_bus_props(struct device_node *node)
         |      ^~~~~~~~~~~~~
   drivers/pci/of.c:60:6: warning: no previous prototype for 'make_dev_node' [-Wmissing-prototypes]
      60 | void make_dev_node(struct pci_dev *dev)
         |      ^~~~~~~~~~~~~
   drivers/pci/of.c:88:21: warning: no previous prototype for 'make_bus_node' [-Wmissing-prototypes]
      88 | struct device_node *make_bus_node(struct pci_bus *bus)
         |                     ^~~~~~~~~~~~~


vim +/add_bus_props +29 drivers/pci/of.c

    28	
  > 29	void add_bus_props(struct device_node *node)
    30	{
    31		struct property *prop;
    32		__be32 *val;
    33	
    34		prop = kzalloc(sizeof(*prop), GFP_KERNEL);
    35		prop->name = "ranges";
    36		prop->value = prop + 1;
    37		prop->next = node->properties;
    38		node->properties = prop;
    39	
    40		prop = kzalloc(sizeof(*prop) + sizeof(__be32), GFP_KERNEL);
    41		prop->name = "#address-cells";
    42		prop->value = prop + 1;
    43		prop->length = sizeof(__be32);
    44		val = prop->value;
    45		val[0] = __cpu_to_be32(3);
    46		prop->next = node->properties;
    47		node->properties = prop;
    48	
    49		prop = kzalloc(sizeof(*prop) + sizeof(__be32), GFP_KERNEL);
    50		prop->name = "#size-cells";
    51		prop->value = prop + 1;
    52		prop->length = sizeof(__be32);
    53		val = prop->value;
    54		val[0] = __cpu_to_be32(2);
    55		prop->next = node->properties;
    56		node->properties = prop;
    57	

-- 
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https://01.org/lkp