Re: [PATCH v2 2/2] iio: adc: add ltc2309 support

[kernel test robot]

Hi Liam,

kernel test robot noticed the following build warnings:

[auto build test WARNING on a5e505a99ca748583dbe558b691be1b26f05d678]

url:    https://github.com/intel-lab-lkp/linux/commits/Liam-Beguin/dt-bindings-iio-adc-add-lltc-ltc2309-bindings/20230826-022412
base:   a5e505a99ca748583dbe558b691be1b26f05d678
patch link:    https://lore.kernel.org/r/20230825-ltc2309-v2-2-6d75f2b3fb50%40gmail.com
patch subject: [PATCH v2 2/2] iio: adc: add ltc2309 support
config: sparc-allyesconfig (https://download.01.org/0day-ci/archive/20230826/202308260324.RYZ1IVWw-lkp@xxxxxxxxx/config)
compiler: sparc64-linux-gcc (GCC) 13.2.0
reproduce: (https://download.01.org/0day-ci/archive/20230826/202308260324.RYZ1IVWw-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/202308260324.RYZ1IVWw-lkp@xxxxxxxxx/

All warnings (new ones prefixed by >>):

>> drivers/iio/adc/ltc2309.c:163:6: warning: no previous prototype for 'ltc2309_regulator_disable' [-Wmissing-prototypes]
     163 | void ltc2309_regulator_disable(void *regulator)
         |      ^~~~~~~~~~~~~~~~~~~~~~~~~


vim +/ltc2309_regulator_disable +163 drivers/iio/adc/ltc2309.c

   162	
 > 163	void ltc2309_regulator_disable(void *regulator)
   164	{
   165		struct regulator *r = (struct regulator *)regulator;
   166	
   167		regulator_disable(r);
   168	}
   169	

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