Re: [RFC PATCH v2 5/6] power: supply: Add bd718(27/28/78) charger driver

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

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Hi Matti,

[FYI, it's a private test report for your RFC patch.]
[auto build test WARNING on 09162bc32c880a791c6c0668ce0745cf7958f576]

url:    https://github.com/0day-ci/linux/commits/Matti-Vaittinen/power-supply-Add-some-fuel-gauge-logic/20201204-205731
base:    09162bc32c880a791c6c0668ce0745cf7958f576
config: arm64-randconfig-r005-20201210 (attached as .config)
compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project 1968804ac726e7674d5de22bc2204b45857da344)
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/0day-ci/linux/commit/9509c087743c74e8a856860210f287d980d5da1b
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Matti-Vaittinen/power-supply-Add-some-fuel-gauge-logic/20201204-205731
        git checkout 9509c087743c74e8a856860210f287d980d5da1b
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross 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/power/supply/bd71827-power.c:996:5: warning: no previous prototype for function 'bd71827_get_ocv' [-Wmissing-prototypes]
   int bd71827_get_ocv(struct sw_gauge *sw, int dsoc, int temp, int *ocv)
       ^
   drivers/power/supply/bd71827-power.c:996:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   int bd71827_get_ocv(struct sw_gauge *sw, int dsoc, int temp, int *ocv)
   ^
   static 
>> drivers/power/supply/bd71827-power.c:1745:5: warning: no previous prototype for function 'bd7182x_get_irqs' [-Wmissing-prototypes]
   int bd7182x_get_irqs(struct platform_device *pdev, struct bd71827_power *pwr)
       ^
   drivers/power/supply/bd71827-power.c:1745:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   int bd7182x_get_irqs(struct platform_device *pdev, struct bd71827_power *pwr)
   ^
   static 
>> drivers/power/supply/bd71827-power.c:1782:5: warning: no previous prototype for function 'bd7182x_get_rsens' [-Wmissing-prototypes]
   int bd7182x_get_rsens(struct bd71827_power *pwr)
       ^
   drivers/power/supply/bd71827-power.c:1782:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   int bd7182x_get_rsens(struct bd71827_power *pwr)
   ^
   static 
   3 warnings generated.

vim +/bd71827_get_ocv +996 drivers/power/supply/bd71827-power.c

   990	
   991	/*
   992	 * Standard batinfo supports only accuracy of 1% for SOC - which
   993	 * may not be sufficient for us. SWGAUGE provides soc in unts of 0.1% here
   994	 * to allow more accurate computation.
   995	 */
 > 996	int bd71827_get_ocv(struct sw_gauge *sw, int dsoc, int temp, int *ocv)
   997	{
   998		int i = 0;
   999	
  1000		if (dsoc > soc_table[0]) {
  1001			*ocv = MAX_VOLTAGE_DEFAULT;
  1002			return 0;
  1003		}
  1004		if (dsoc == 0) {
  1005			*ocv = ocv_table[21];
  1006			return 0;
  1007		}
  1008	
  1009		i = 0;
  1010		while (i < 22) {
  1011			if ((dsoc <= soc_table[i]) && (dsoc > soc_table[i+1])) {
  1012				*ocv = (ocv_table[i] - ocv_table[i+1]) *
  1013				       (dsoc - soc_table[i+1]) / (soc_table[i] -
  1014				       soc_table[i+1]) + ocv_table[i+1];
  1015				return 0;
  1016			}
  1017			i++;
  1018		}
  1019	
  1020		*ocv = ocv_table[22];
  1021	
  1022		return 0;
  1023	}
  1024	

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

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