Hi Alexandre,

I love your patch! Perhaps something to improve:

[auto build test WARNING on abelloni/rtc-next]
[also build test WARNING on robh/for-next v5.9-rc7 next-20200929]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    
https://github.com/0day-ci/linux/commits/Alexandre-Belloni/dt-bindings-rtc-add-trickle-voltage-mV/20200922-013149
base:   https://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux.git 
rtc-next
config: nds32-randconfig-r035-20200930 (attached as .config)
compiler: nds32le-linux-gcc (GCC) 9.3.0
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/0day-ci/linux/commit/038302bc860e9c8ecb37dad9fc74d823bd57fdbe
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review 
Alexandre-Belloni/dt-bindings-rtc-add-trickle-voltage-mV/20200922-013149
        git checkout 038302bc860e9c8ecb37dad9fc74d823bd57fdbe
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross 
ARCH=nds32 

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

All warnings (new ones prefixed by >>):

   drivers/rtc/rtc-rv3032.c: In function 'rv3032_trickle_charger_setup':
>> drivers/rtc/rtc-rv3032.c:485:6: warning: variable 'val' set but not used 
>> [-Wunused-but-set-variable]
     485 |  u32 val, ohms, voltage;
         |      ^~~

vim +/val +485 drivers/rtc/rtc-rv3032.c

   482  
   483  static int rv3032_trickle_charger_setup(struct device *dev, struct 
rv3032_data *rv3032)
   484  {
 > 485          u32 val, ohms, voltage;
   486          int i, ret;
   487  
   488          val = FIELD_PREP(RV3032_PMU_TCM, 1) | 
FIELD_PREP(RV3032_PMU_BSM, RV3032_PMU_BSM_DSM);
   489          if (!device_property_read_u32(dev, "trickle-voltage-mV", 
&voltage)) {
   490                  for (i = 0; i < ARRAY_SIZE(rv3032_trickle_voltages); 
i++)
   491                          if (voltage == rv3032_trickle_voltages[i])
   492                                  break;
   493                  if (i < ARRAY_SIZE(rv3032_trickle_voltages))
   494                          val = FIELD_PREP(RV3032_PMU_TCM, i) |
   495                                FIELD_PREP(RV3032_PMU_BSM, 
RV3032_PMU_BSM_LSM);
   496          }
   497  
   498          if (!device_property_read_u32(dev, "trickle-resistor-ohms", 
&ohms)) {
   499                  for (i = 0; i < ARRAY_SIZE(rv3032_trickle_resistors); 
i++)
   500                          if (ohms == rv3032_trickle_resistors[i])
   501                                  break;
   502  
   503                  if (i < ARRAY_SIZE(rv3032_trickle_resistors)) {
   504                          ret = regmap_update_bits(rv3032->regmap, 
RV3032_PMU,
   505                                                   RV3032_PMU_TCR | 
RV3032_PMU_TCM | RV3032_PMU_BSM,
   506                                                   
FIELD_PREP(RV3032_PMU_TCR, i));
   507                          if (ret)
   508                                  return ret;
   509                  } else {
   510                          dev_warn(dev, "invalid trickle resistor 
value\n");
   511                  }
   512          }
   513  
   514          return 0;
   515  }
   516  

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

Attachment: .config.gz
Description: application/gzip

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