Re: [PATCH v6 8/8] iio: adc: ad7606: add support for AD7606C-{16,18} parts

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On Sat, 14 Sep 2024 04:30:42 +0800
kernel test robot <lkp@xxxxxxxxx> wrote:

> Hi Alexandru,
> 
> kernel test robot noticed the following build warnings:
> 
> [auto build test WARNING on jic23-iio/togreg]
> [also build test WARNING on next-20240913]
> [cannot apply to linus/master v6.11-rc7]
> [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/Alexandru-Ardelean/iio-adc-ad7606-add-bits-parameter-to-channels-macros/20240913-220501
> base:   https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git togreg
> patch link:    https://lore.kernel.org/r/20240913135744.152669-9-aardelean%40baylibre.com
> patch subject: [PATCH v6 8/8] iio: adc: ad7606: add support for AD7606C-{16,18} parts
> config: arm-randconfig-001-20240914 (https://download.01.org/0day-ci/archive/20240914/202409140416.KWHXjFSv-lkp@xxxxxxxxx/config)
> compiler: arm-linux-gnueabi-gcc (GCC) 14.1.0
> reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240914/202409140416.KWHXjFSv-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/202409140416.KWHXjFSv-lkp@xxxxxxxxx/
> 
> All warnings (new ones prefixed by >>):
> 
> >> drivers/iio/adc/ad7606.c:39:27: warning: 'ad7606_18bit_hw_scale_avail' defined but not used [-Wunused-const-variable=]  
>       39 | static const unsigned int ad7606_18bit_hw_scale_avail[2] = {
>          |                           ^~~~~~~~~~~~~~~~~~~~~~~~~~~
> 
> 
> vim +/ad7606_18bit_hw_scale_avail +39 drivers/iio/adc/ad7606.c
> 
>     38	
>   > 39	static const unsigned int ad7606_18bit_hw_scale_avail[2] = {  
>     40		38147, 76294
>     41	};
>     42	
Hmm. Seems like there is no code that would use this, so what is it
and where did the numbers come from?

Jonathan

> 





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