[chrome-os:chromeos-6.6 192/192] drivers/thermal/mediatek/soc_temp_lvts_mt8196.c:230:6: warning: no previous prototype for function 'lvts_wait_for_all_sensing_point_idle'

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

tree:   https://chromium.googlesource.com/chromiumos/third_party/kernel chromeos-6.6
head:   1b7d37693f7bd7e9f37c02d15753e16b5bac8c79
commit: da40e24aff5b36a331b3113fa10dcc46a6cdda9b [192/192] CHROMIUM: thermal/mediatek: add thermal driver
config: x86_64-allyesconfig (https://download.01.org/0day-ci/archive/20250206/202502060037.eHmmnb8J-lkp@intel.com/config)
compiler: clang version 19.1.3 (https://github.com/llvm/llvm-project ab51eccf88f5321e7c60591c5546b254b6afab99)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250206/202502060037.eHmmnb8J-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/202502060037.eHmmnb8J-lkp@intel.com/

All warnings (new ones prefixed by >>):

   drivers/thermal/mediatek/soc_temp_lvts_mt8196.c:74:21: warning: variable 's_index' set but not used [-Wunused-but-set-variable]
      74 |         unsigned int i, j, s_index, msr_raw;
         |                            ^
>> drivers/thermal/mediatek/soc_temp_lvts_mt8196.c:230:6: warning: no previous prototype for function 'lvts_wait_for_all_sensing_point_idle' [-Wmissing-prototypes]
     230 | void lvts_wait_for_all_sensing_point_idle(struct lvts_data *lvts_data)
         |      ^
   drivers/thermal/mediatek/soc_temp_lvts_mt8196.c:230:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
     230 | void lvts_wait_for_all_sensing_point_idle(struct lvts_data *lvts_data)
         | ^
         | static 
   drivers/thermal/mediatek/soc_temp_lvts_mt8196.c:860:20: warning: variable 'lvts_data' set but not used [-Wunused-but-set-variable]
     860 |         struct lvts_data *lvts_data;
         |                           ^
   3 warnings generated.


vim +/lvts_wait_for_all_sensing_point_idle +230 drivers/thermal/mediatek/soc_temp_lvts_mt8196.c

   229	
 > 230	void lvts_wait_for_all_sensing_point_idle(struct lvts_data *lvts_data)
   231	{
   232		struct device *dev = lvts_data->dev;
   233		int cnt = 0, i, error_code, mask;
   234		int temp;
   235		void __iomem *base;
   236	
   237		mask = BIT(10) | BIT(7) | BIT(0);
   238		/*
   239		 * Wait until all sensoring points idled.
   240		 * No need to check LVTS status when suspend/resume,
   241		 * this will spend extra 100us of suspend flow.
   242		 * LVTS status will be reset after resume.
   243		 */
   244		while (cnt < 80) {
   245			temp = lvts_thermal_check_all_sensing_point_idle(lvts_data);
   246			if (temp == 0)
   247				goto TAIL;
   248	
   249			udelay(2);
   250			cnt++;
   251		}
   252		for (i = 0; i < lvts_data->num_tc; i++) {
   253			base = GET_BASE_ADDR(i);
   254			temp = readl(LVTSMSRCTL1_0 + base);
   255			if ((temp & mask) != 0) {
   256				error_code = ((temp & BIT(10)) >> 8) +
   257					((temp & BIT(7)) >> 6) +
   258					(temp & BIT(0));
   259	
   260				dev_info(dev, "Error LVTS %d sensing points aren't idle, error_code %d\n",
   261					i, error_code);
   262			}
   263		}
   264	TAIL:
   265		return;
   266	}
   267	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki