Re: [PATCH v1 2/2] i2c: i2c-stm32f7: SYSCFG Fast Mode Plus support for I2C STM32F7

[kbuild test robot]

Hi Pierre-Yves,

I love your patch! Yet something to improve:

[auto build test ERROR on wsa/i2c/for-next]
[also build test ERROR on v4.20-rc2 next-20181116]
[if your patch is applied to the wrong git tree, please drop us a note to help 
improve the system]

url:    
https://github.com/0day-ci/linux/commits/Pierre-Yves-MORDRET/SYSCFG-Fast-Mode-Plus-support-for-I2C-STM32F7/20181118-135056
base:   https://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux.git 
i2c/for-next
config: s390-allmodconfig (attached as .config)
compiler: s390x-linux-gnu-gcc (Debian 7.2.0-11) 7.2.0
reproduce:
        wget 
https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O 
~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        GCC_VERSION=7.2.0 make.cross ARCH=s390 

All errors (new ones prefixed by >>):

   drivers/i2c/busses/i2c-stm32f7.c: In function 
'stm32f7_i2c_setup_fm_plus_bits':
>> drivers/i2c/busses/i2c-stm32f7.c:1790:9: error: implicit declaration of 
>> function 'regmap_update_bits'; did you mean 'set_pgste_bits'? 
>> [-Werror=implicit-function-declaration]
     return regmap_update_bits(i2c_dev->regmap, reg, mask, mask);
            ^~~~~~~~~~~~~~~~~~
            set_pgste_bits
   cc1: some warnings being treated as errors

vim +1790 drivers/i2c/busses/i2c-stm32f7.c

  1768  
  1769  static int stm32f7_i2c_setup_fm_plus_bits(struct platform_device *pdev,
  1770                                            struct stm32f7_i2c_dev 
*i2c_dev)
  1771  {
  1772          struct device_node *np = pdev->dev.of_node;
  1773          int ret;
  1774          u32 reg, mask;
  1775  
  1776          i2c_dev->regmap = syscon_regmap_lookup_by_phandle(np, 
"st,syscfg-fmp");
  1777          if (IS_ERR(i2c_dev->regmap)) {
  1778                  /* Optional */
  1779                  return 0;
  1780          }
  1781  
  1782          ret = of_property_read_u32_index(np, "st,syscfg-fmp", 1, &reg);
  1783          if (ret)
  1784                  return ret;
  1785  
  1786          ret = of_property_read_u32_index(np, "st,syscfg-fmp", 2, &mask);
  1787          if (ret)
  1788                  return ret;
  1789  
> 1790          return regmap_update_bits(i2c_dev->regmap, reg, mask, mask);
  1791  }
  1792  

---
0-DAY kernel test infrastructure                Open Source Technology Center
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