[frank-w-bpi-r2-4.14:5.15-r2pro 34/44] drivers/net/phy/swconfig.c:1061:1: warning: no previous prototype for function 'of_switch_load_portmap'

[frank-w-bpi-r2-4.14:5.15-r2pro 34/44] drivers/net/phy/swconfig.c:1061:1: warning: no previous prototype for function 'of_switch_load_portmap'

[kernel test robot]

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tree:   https://github.com/frank-w/BPI-R2-4.14 5.15-r2pro
head:   979af5cddf764f04ffac8b9b9b4ab8aa7958c420
commit: f53727f78a178502498e6eebb52864551e4200dd [34/44] rtl8367: fix last unresolved symbols of openwrt driver
config: arm64-buildonly-randconfig-r004-20211004 (attached as .config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 57d9adefa04dc65096b8ba3e5763c15305676f73)
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
        # install arm64 cross compiling tool for clang build
        # apt-get install binutils-aarch64-linux-gnu
        # https://github.com/frank-w/BPI-R2-4.14/commit/f53727f78a178502498e6eebb52864551e4200dd
        git remote add frank-w-bpi-r2-4.14 https://github.com/frank-w/BPI-R2-4.14
        git fetch --no-tags frank-w-bpi-r2-4.14 5.15-r2pro
        git checkout f53727f78a178502498e6eebb52864551e4200dd
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=arm64 

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 >>):

>> drivers/net/phy/swconfig.c:1061:1: warning: no previous prototype for function 'of_switch_load_portmap' [-Wmissing-prototypes]
   of_switch_load_portmap(struct switch_dev *dev)
   ^
   drivers/net/phy/swconfig.c:1060:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void
   ^
   static 
   1 warning generated.


vim +/of_switch_load_portmap +1061 drivers/net/phy/swconfig.c

  1058	
  1059	#ifdef CONFIG_OF
  1060	void
> 1061	of_switch_load_portmap(struct switch_dev *dev)
  1062	{
  1063		struct device_node *port;
  1064	
  1065		if (!dev->of_node)
  1066			return;
  1067	
  1068		for_each_child_of_node(dev->of_node, port) {
  1069			const __be32 *prop;
  1070			const char *segment;
  1071			int size, phys;
  1072	
  1073			if (!of_device_is_compatible(port, "swconfig,port"))
  1074				continue;
  1075	
  1076			if (of_property_read_string(port, "swconfig,segment", &segment))
  1077				continue;
  1078	
  1079			prop = of_get_property(port, "swconfig,portmap", &size);
  1080			if (!prop)
  1081				continue;
  1082	
  1083			if (size != (2 * sizeof(*prop))) {
  1084				pr_err("%s: failed to parse port mapping\n",
  1085						port->name);
  1086				continue;
  1087			}
  1088	
  1089			phys = be32_to_cpup(prop++);
  1090			if ((phys < 0) | (phys >= dev->ports)) {
  1091				pr_err("%s: physical port index out of range\n",
  1092						port->name);
  1093				continue;
  1094			}
  1095	
  1096			dev->portmap[phys].s = kstrdup(segment, GFP_KERNEL);
  1097			dev->portmap[phys].virt = be32_to_cpup(prop);
  1098			pr_debug("Found port: %s, physical: %d, virtual: %d\n",
  1099				segment, phys, dev->portmap[phys].virt);
  1100		}
  1101	}
  1102	#endif
  1103	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org

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