Re: [PATCH v2 2/2] iio: magnetometer: si7210: add driver for Si7210

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

Hi Antoni,

kernel test robot noticed the following build warnings:

[auto build test WARNING on jic23-iio/togreg]
[also build test WARNING on linus/master v6.13-rc6 next-20250110]
[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/Antoni-Pokusinski/dt-bindings-iio-magnetometer-add-binding-for-Si7210/20250109-074641
base:   https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git togreg
patch link:    https://lore.kernel.org/r/20250108234411.882768-3-apokusinski01%40gmail.com
patch subject: [PATCH v2 2/2] iio: magnetometer: si7210: add driver for Si7210
config: arc-randconfig-r111-20250111 (https://download.01.org/0day-ci/archive/20250111/202501110655.qR09D59T-lkp@intel.com/config)
compiler: arc-elf-gcc (GCC) 13.2.0
reproduce: (https://download.01.org/0day-ci/archive/20250111/202501110655.qR09D59T-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/202501110655.qR09D59T-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
>> drivers/iio/magnetometer/si7210.c:169:16: sparse: sparse: incorrect type in argument 1 (different base types) @@     expected unsigned short [usertype] val @@     got restricted __be16 [usertype] @@
   drivers/iio/magnetometer/si7210.c:169:16: sparse:     expected unsigned short [usertype] val
   drivers/iio/magnetometer/si7210.c:169:16: sparse:     got restricted __be16 [usertype]
   drivers/iio/magnetometer/si7210.c:169:16: sparse: sparse: cast from restricted __be16
   drivers/iio/magnetometer/si7210.c:169:16: sparse: sparse: cast from restricted __be16
   drivers/iio/magnetometer/si7210.c:189:24: sparse: sparse: restricted __be16 degrades to integer
   drivers/iio/magnetometer/si7210.c:206:23: sparse: sparse: cast to restricted __be16
   drivers/iio/magnetometer/si7210.c:206:23: sparse: sparse: restricted __be16 degrades to integer
   drivers/iio/magnetometer/si7210.c:206:23: sparse: sparse: restricted __be16 degrades to integer

vim +169 drivers/iio/magnetometer/si7210.c

   143	
   144	static int si7210_fetch_measurement(struct si7210_data *data,
   145					    struct iio_chan_spec const *chan,
   146					    __be16 *buf)
   147	{
   148		u8 dspsigsel = chan->type == IIO_MAGN ? 0 : 1;
   149		int ret;
   150	
   151		guard(mutex)(&data->fetch_lock);
   152	
   153		ret = regmap_update_bits(data->regmap, SI7210_REG_DSPSIGSEL,
   154					 SI7210_MASK_DSPSIGSEL, dspsigsel);
   155		if (ret < 0)
   156			return ret;
   157	
   158		ret = regmap_update_bits(data->regmap, SI7210_REG_POWER_CTRL,
   159					 SI7210_MASK_ONEBURST | SI7210_MASK_STOP,
   160					 SI7210_MASK_ONEBURST & ~SI7210_MASK_STOP);
   161		if (ret < 0)
   162			return ret;
   163	
   164		/* Read the contents of the registers containing the result: DSPSIGM, DSPSIGL */
   165		ret = regmap_bulk_read(data->regmap, SI7210_REG_DSPSIGM, buf, 2);
   166		if (ret < 0)
   167			return ret;
   168	
 > 169		*buf = cpu_to_be16(*buf);
   170	
   171		return 0;
   172	}
   173	

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