[esmil:eic7700 21/24] drivers/pci/controller/dwc/pcie-eswin.c:189:5: warning: no previous prototype for function 'eswin_evb_socket_power_on'

[esmil:eic7700 21/24] drivers/pci/controller/dwc/pcie-eswin.c:189:5: warning: no previous prototype for function 'eswin_evb_socket_power_on'

[kernel test robot]

tree:   https://github.com/esmil/linux eic7700
head:   eb44174b12f99d320be704b45db6b994f6a014bd
commit: 357191b1d41675670255887ef252d171eef65bc4 [21/24] driver: PCIe: Add PCIe driver for EIC7700
config: riscv-allmodconfig (https://download.01.org/0day-ci/archive/20240901/202409011151.uOjxg9JM-lkp@intel.com/config)
compiler: clang version 20.0.0git (https://github.com/llvm/llvm-project 46fe36a4295f05d5d3731762e31fc4e6e99863e9)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240901/202409011151.uOjxg9JM-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202409011151.uOjxg9JM-lkp@intel.com/

All warnings (new ones prefixed by >>):

   In file included from drivers/pci/controller/dwc/pcie-eswin.c:30:
   In file included from include/linux/pci.h:38:
   In file included from include/linux/interrupt.h:22:
   In file included from arch/riscv/include/asm/sections.h:9:
   In file included from include/linux/mm.h:2228:
   include/linux/vmstat.h:503:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
     503 |         return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
         |                            ~~~~~~~~~~~~~~~~~~~~~ ^
     504 |                            item];
         |                            ~~~~
   include/linux/vmstat.h:510:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
     510 |         return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
         |                            ~~~~~~~~~~~~~~~~~~~~~ ^
     511 |                            NR_VM_NUMA_EVENT_ITEMS +
         |                            ~~~~~~~~~~~~~~~~~~~~~~
   include/linux/vmstat.h:517:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion]
     517 |         return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_"
         |                               ~~~~~~~~~~~ ^ ~~~
   include/linux/vmstat.h:523:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
     523 |         return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
         |                            ~~~~~~~~~~~~~~~~~~~~~ ^
     524 |                            NR_VM_NUMA_EVENT_ITEMS +
         |                            ~~~~~~~~~~~~~~~~~~~~~~
>> drivers/pci/controller/dwc/pcie-eswin.c:189:5: warning: no previous prototype for function 'eswin_evb_socket_power_on' [-Wmissing-prototypes]
     189 | int eswin_evb_socket_power_on(struct device *dev)
         |     ^
   drivers/pci/controller/dwc/pcie-eswin.c:189:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
     189 | int eswin_evb_socket_power_on(struct device *dev)
         | ^
         | static 
   5 warnings generated.


vim +/eswin_evb_socket_power_on +189 drivers/pci/controller/dwc/pcie-eswin.c

   185	
   186	/* TODO: Check socket gpio number in actual board and
   187	 *       change if necessary
   188	 */
 > 189	int eswin_evb_socket_power_on(struct device *dev)
   190	{
   191		int err_desc=0;
   192		struct gpio_desc *gpio;
   193		gpio = devm_gpiod_get(dev, "pci-socket", GPIOD_OUT_LOW);
   194		err_desc = IS_ERR(gpio);
   195	
   196		if (err_desc) {
   197			pr_err("No power control gpio found, maybe not needed\n");
   198			return 0;
   199		}
   200	
   201		gpiod_set_value(gpio,1);
   202	
   203		return err_desc;
   204	}
   205	

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