Hi Charles,

I love your patch! Yet something to improve:

[auto build test ERROR on linux/master]
[also build test ERROR on linus/master v5.10]
[cannot apply to hwmon/hwmon-next next-20201215]
[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/Charles-Hsu/hwmon-Add-driver-for-STMicroelectronics-PM6764-Voltage-Regulator/20201211-175428
base:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 09162bc32c880a791c6c0668ce0745cf7958f576
config: x86_64-randconfig-a012-20201215 (attached as .config)
compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project a29ecca7819a6ed4250d3689b12b1f664bb790d7)
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 x86_64 cross compiling tool for clang build
        # apt-get install binutils-x86-64-linux-gnu
        # https://github.com/0day-ci/linux/commit/b03a990fad3a963b4dd9801a24c2e4acae91d2cf
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Charles-Hsu/hwmon-Add-driver-for-STMicroelectronics-PM6764-Voltage-Regulator/20201211-175428
        git checkout b03a990fad3a963b4dd9801a24c2e4acae91d2cf
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 

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

All errors (new ones prefixed by >>):

>> drivers/hwmon/pmbus/pm6764tr.c:22:68: error: too few arguments to function call, expected 4, have 3
                   ret = pmbus_read_word_data(client, page, PM6764TR_PMBUS_READ_VOUT);
                         ~~~~~~~~~~~~~~~~~~~~                                       ^
   drivers/hwmon/pmbus/pmbus.h:479:5: note: 'pmbus_read_word_data' declared here
   int pmbus_read_word_data(struct i2c_client *client, int page, int phase,
       ^
>> drivers/hwmon/pmbus/pm6764tr.c:42:20: error: incompatible function pointer types initializing 'int (*)(struct i2c_client *, int, int, int)' with an expression of type 'int (struct i2c_client *, int, int)' [-Werror,-Wincompatible-function-pointer-types]
           .read_word_data = pm6764tr_read_word_data,
                             ^~~~~~~~~~~~~~~~~~~~~~~
>> drivers/hwmon/pmbus/pm6764tr.c:48:36: error: too many arguments to function call, expected 2, have 3
           return pmbus_do_probe(client, id, &pm6764tr_info);
                  ~~~~~~~~~~~~~~             ^~~~~~~~~~~~~~
   drivers/hwmon/pmbus/pmbus.h:492:5: note: 'pmbus_do_probe' declared here
   int pmbus_do_probe(struct i2c_client *client, struct pmbus_driver_info *info);
       ^
>> drivers/hwmon/pmbus/pm6764tr.c:68:15: error: incompatible function pointer types initializing 'int (*)(struct i2c_client *)' with an expression of type 'int (struct i2c_client *, const struct i2c_device_id *)' [-Werror,-Wincompatible-function-pointer-types]
           .probe_new = pm6764tr_probe,
                        ^~~~~~~~~~~~~~
   4 errors generated.

vim +22 drivers/hwmon/pmbus/pm6764tr.c

    15	
    16	static int pm6764tr_read_word_data(struct i2c_client *client, int page, int reg)
    17	{
    18		int ret;
    19	
    20		switch (reg) {
    21		case PMBUS_VIRT_READ_VMON:
  > 22			ret = pmbus_read_word_data(client, page, PM6764TR_PMBUS_READ_VOUT);
    23			break;
    24		default:
    25			ret = -ENODATA;
    26			break;
    27		}
    28		return ret;
    29	}
    30	
    31	static struct pmbus_driver_info pm6764tr_info = {
    32		.pages = 1,
    33		.format[PSC_VOLTAGE_IN] = linear,
    34		.format[PSC_VOLTAGE_OUT] = vid,
    35		.format[PSC_TEMPERATURE] = linear,
    36		.format[PSC_CURRENT_OUT] = linear,
    37		.format[PSC_POWER] = linear,
    38		.func[0] = PMBUS_HAVE_VIN | PMBUS_HAVE_IIN |  PMBUS_HAVE_PIN |
    39			PMBUS_HAVE_IOUT | PMBUS_HAVE_POUT | PMBUS_HAVE_VMON |
    40			PMBUS_HAVE_STATUS_IOUT | PMBUS_HAVE_STATUS_VOUT |
    41			PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
  > 42		.read_word_data = pm6764tr_read_word_data,
    43	};
    44	
    45	static int pm6764tr_probe(struct i2c_client *client,
    46				  const struct i2c_device_id *id)
    47	{
  > 48		return pmbus_do_probe(client, id, &pm6764tr_info);
    49	}
    50	
    51	static const struct i2c_device_id pm6764tr_id[] = {
    52		{"pm6764tr", 0},
    53		{}
    54	};
    55	MODULE_DEVICE_TABLE(i2c, pm6764tr_id);
    56	
    57	static const struct of_device_id pm6764tr_of_match[] = {
    58		{.compatible = "st,pm6764tr"},
    59		{}
    60	};
    61	
    62	/* This is the driver that will be inserted */
    63	static struct i2c_driver pm6764tr_driver = {
    64		.driver = {
    65			   .name = "pm6764tr",
    66			   .of_match_table = of_match_ptr(pm6764tr_of_match),
    67			   },
  > 68		.probe_new = pm6764tr_probe,
    69		.id_table = pm6764tr_id,
    70	};
    71	

---
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