Re: [PATCH v3 1/3] iio: light: ltr390: Add configurable gain and resolution

[kernel test robot]

Hi Abhash,

kernel test robot noticed the following build errors:

[auto build test ERROR on jic23-iio/togreg]
[also build test ERROR on linus/master v6.11-rc1 next-20240729]
[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/Abhash-Jha/iio-light-ltr390-Add-configurable-gain-and-resolution/20240729-222433
base:   https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git togreg
patch link:    https://lore.kernel.org/r/20240729115056.355466-2-abhashkumarjha123%40gmail.com
patch subject: [PATCH v3 1/3] iio: light: ltr390: Add configurable gain and resolution
config: m68k-allmodconfig (https://download.01.org/0day-ci/archive/20240730/202407301035.KehnJ97o-lkp@xxxxxxxxx/config)
compiler: m68k-linux-gcc (GCC) 14.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240730/202407301035.KehnJ97o-lkp@xxxxxxxxx/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@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202407301035.KehnJ97o-lkp@xxxxxxxxx/

All errors (new ones prefixed by >>):

   drivers/iio/light/ltr390.c: In function 'ltr390_set_int_time':
>> drivers/iio/light/ltr390.c:42:41: error: implicit declaration of function 'FIELD_PREP' [-Wimplicit-function-declaration]
      42 | #define LTR390_ALS_UVS_INT_TIME(x)      FIELD_PREP(LTR390_ALS_UVS_INT_TIME_MASK, (x))
         |                                         ^~~~~~~~~~
   drivers/iio/light/ltr390.c:171:41: note: in expansion of macro 'LTR390_ALS_UVS_INT_TIME'
     171 |                                         LTR390_ALS_UVS_INT_TIME(idx));
         |                                         ^~~~~~~~~~~~~~~~~~~~~~~


vim +/FIELD_PREP +42 drivers/iio/light/ltr390.c

    38	
    39	#define LTR390_PART_NUMBER_ID		0xb
    40	#define LTR390_ALS_UVS_GAIN_MASK	0x07
    41	#define LTR390_ALS_UVS_INT_TIME_MASK	0x70
  > 42	#define LTR390_ALS_UVS_INT_TIME(x)	FIELD_PREP(LTR390_ALS_UVS_INT_TIME_MASK, (x))
    43	

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