Re: [PATCH v2 2/2] hwmon: (adt7475) Convert to use device_property APIs

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Hi Chris,

kernel test robot noticed the following build errors:

[auto build test ERROR on groeck-staging/hwmon-next]
[also build test ERROR on linus/master v6.3-rc7]
[cannot apply to next-20230420]
[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#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Chris-Packham/hwmon-adt7475-Use-device_property-APIs-when-configuring-polarity/20230419-074117
base:   https://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging.git hwmon-next
patch link:    https://lore.kernel.org/r/20230418233656.869055-3-chris.packham%40alliedtelesis.co.nz
patch subject: [PATCH v2 2/2] hwmon: (adt7475) Convert to use device_property APIs
config: i386-randconfig-a013 (https://download.01.org/0day-ci/archive/20230421/202304211232.U03a7306-lkp@xxxxxxxxx/config)
compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project f28c006a5895fc0e329fe15fead81e37457cb1d1)
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/intel-lab-lkp/linux/commit/59836340c66130951595e2adebf284eca3063ccd
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Chris-Packham/hwmon-adt7475-Use-device_property-APIs-when-configuring-polarity/20230419-074117
        git checkout 59836340c66130951595e2adebf284eca3063ccd
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=i386 olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=i386 SHELL=/bin/bash drivers/hwmon/ drivers/net/ethernet/intel/ice/ kernel/rcu/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@xxxxxxxxx>
| Link: https://lore.kernel.org/oe-kbuild-all/202304211232.U03a7306-lkp@xxxxxxxxx/

All errors (new ones prefixed by >>):

>> drivers/hwmon/adt7475.c:1471:36: error: passing 'const struct device *' to parameter of type 'struct device *' discards qualifiers [-Werror,-Wincompatible-pointer-types-discards-qualifiers]
           ret = device_property_read_string(&client->dev, propname, &function);
                                             ^~~~~~~~~~~~
   include/linux/property.h:54:48: note: passing argument to parameter 'dev' here
   int device_property_read_string(struct device *dev, const char *propname,
                                                  ^
   drivers/hwmon/adt7475.c:1497:36: error: passing 'const struct device *' to parameter of type 'struct device *' discards qualifiers [-Werror,-Wincompatible-pointer-types-discards-qualifiers]
           ret = device_property_read_string(&client->dev, propname, &function);
                                             ^~~~~~~~~~~~
   include/linux/property.h:54:48: note: passing argument to parameter 'dev' here
   int device_property_read_string(struct device *dev, const char *propname,
                                                  ^
   drivers/hwmon/adt7475.c:1559:37: error: passing 'const struct device *' to parameter of type 'struct device *' discards qualifiers [-Werror,-Wincompatible-pointer-types-discards-qualifiers]
           int ret = device_property_read_u32(&client->dev, property,
                                              ^~~~~~~~~~~~
   include/linux/property.h:164:59: note: passing argument to parameter 'dev' here
   static inline int device_property_read_u32(struct device *dev,
                                                             ^
   3 errors generated.


vim +1471 drivers/hwmon/adt7475.c

  1464	
  1465	static int load_config3(const struct i2c_client *client, const char *propname)
  1466	{
  1467		const char *function;
  1468		u8 config3;
  1469		int ret;
  1470	
> 1471		ret = device_property_read_string(&client->dev, propname, &function);
  1472		if (!ret) {
  1473			ret = adt7475_read(REG_CONFIG3);
  1474			if (ret < 0)
  1475				return ret;
  1476	
  1477			config3 = ret & ~CONFIG3_SMBALERT;
  1478			if (!strcmp("pwm2", function))
  1479				;
  1480			else if (!strcmp("smbalert#", function))
  1481				config3 |= CONFIG3_SMBALERT;
  1482			else
  1483				return -EINVAL;
  1484	
  1485			return i2c_smbus_write_byte_data(client, REG_CONFIG3, config3);
  1486		}
  1487	
  1488		return 0;
  1489	}
  1490	

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



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