[linux-next:master 1467/1905] drivers/hwmon/nct6775-i2c.c:164:15: warning: cast to smaller integer type 'enum kinds' from 'const void *'

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

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   eff99d8edbed7918317331ebd1e365d8e955d65e
commit: 0a7093e69c1eb508d699d6076013706b0c523597 [1467/1905] hwmon: nct6775-i2c: Use i2c_get_match_data()
config: x86_64-allmodconfig (https://download.01.org/0day-ci/archive/20231119/202311191205.EDRfQlJF-lkp@intel.com/config)
compiler: clang version 16.0.4 (https://github.com/llvm/llvm-project.git ae42196bc493ffe877a7e3dff8be32035dea4d07)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231119/202311191205.EDRfQlJF-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202311191205.EDRfQlJF-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> drivers/hwmon/nct6775-i2c.c:164:15: warning: cast to smaller integer type 'enum kinds' from 'const void *' [-Wvoid-pointer-to-enum-cast]
           data->kind = (enum kinds)i2c_get_match_data(client);
                        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   1 warning generated.


vim +164 drivers/hwmon/nct6775-i2c.c

   154	
   155	static int nct6775_i2c_probe(struct i2c_client *client)
   156	{
   157		struct nct6775_data *data;
   158		struct device *dev = &client->dev;
   159	
   160		data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL);
   161		if (!data)
   162			return -ENOMEM;
   163	
 > 164		data->kind = (enum kinds)i2c_get_match_data(client);
   165		data->read_only = true;
   166		data->driver_data = client;
   167		data->driver_init = nct6775_i2c_probe_init;
   168	
   169		return nct6775_probe(dev, data, &nct6775_i2c_regmap_config);
   170	}
   171	

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