RE: [jic23-iio:testing 6/10] drivers/iio/adc/max14001.c:135:13: warning: result of comparison of constant 18446744073709551615 with expression of type 'typeof (_Generic((mask), char: (unsigned char)0, unsigned char: (unsigned char)0, signed char: (unsi...

["Paller, Kim Seer" <KimSeer.Paller@analog.com>]

> -----Original Message-----
> From: Andy Shevchenko <andy.shevchenko@gmail.com>
> Sent: Wednesday, June 21, 2023 4:25 PM
> To: kernel test robot <lkp@intel.com>
> Cc: Paller, Kim Seer <KimSeer.Paller@analog.com>; llvm@lists.linux.dev; oe-
> kbuild-all@lists.linux.dev; Jonathan Cameron
> <Jonathan.Cameron@huawei.com>
> Subject: Re: [jic23-iio:testing 6/10] drivers/iio/adc/max14001.c:135:13:
> warning: result of comparison of constant 18446744073709551615 with
> expression of type 'typeof (_Generic((mask), char: (unsigned char)0, unsigned
> char: (unsigned char)0, signed char: (unsi...
> 
> [External]
> 
> On Wed, Jun 21, 2023 at 10:19 AM kernel test robot <lkp@intel.com> wrote:
> >
> > tree:
> https://urldefense.com/v3/__https://git.kernel.org/pub/scm/linux/kernel/git/ji
> c23/iio.git__;!!A3Ni8CS0y2Y!45o_-MMr4xq4e_9PWpK-sQ_qHBbFbbS7Q2J-
> fNmTvSPAQXjYhpLYDteGHSeWEbdIAv364HiQBQy2tXMdnz3oesPJvyDEVg$
> testing
> > head:   25e201cc6ff270abc062e13ff912292097cb2827
> > commit: d3e93b67f934a477c5851d575a2278f07c6242fb [6/10] iio: adc:
> > max14001: New driver
> > config: x86_64-allyesconfig
> > (https://urldefense.com/v3/__https://download.01.org/0day-ci/archive/2
> > 0230621/202306211545.7b6CdqsL-
> lkp@intel.com/config__;!!A3Ni8CS0y2Y!45o
> > _-MMr4xq4e_9PWpK-sQ_qHBbFbbS7Q2J-
> fNmTvSPAQXjYhpLYDteGHSeWEbdIAv364HiQB
> > Qy2tXMdnz3oesOgKhx9ZQ$ )
> > compiler: clang version 15.0.7
> > (https://urldefense.com/v3/__https://github.com/llvm/llvm-project.git_
> > _;!!A3Ni8CS0y2Y!45o_-MMr4xq4e_9PWpK-sQ_qHBbFbbS7Q2J-
> fNmTvSPAQXjYhpLYDt
> > eGHSeWEbdIAv364HiQBQy2tXMdnz3oesOx97mL0Q$
> > 8dfdcc7b7bf66834a761bd8de445840ef68e4d1a)
> > reproduce:
> > (https://urldefense.com/v3/__https://download.01.org/0day-ci/archive/2
> > 0230621/202306211545.7b6CdqsL-
> lkp@intel.com/reproduce__;!!A3Ni8CS0y2Y!
> > 45o_-MMr4xq4e_9PWpK-sQ_qHBbFbbS7Q2J-
> fNmTvSPAQXjYhpLYDteGHSeWEbdIAv364H
> > iQBQy2tXMdnz3oesODMiAFrg$ )
> >
> > 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://urldefense.com/v3/__https://lore.kernel.org/oe-kbuild-all/20
> > | 2306211545.7b6CdqsL-lkp@intel.com/__;!!A3Ni8CS0y2Y!45o_-
> MMr4xq4e_9PW
> > | pK-sQ_qHBbFbbS7Q2J-
> fNmTvSPAQXjYhpLYDteGHSeWEbdIAv364HiQBQy2tXMdnz3oe
> > | sOVGB0hTQ$
> >
> > All warnings (new ones prefixed by >>):
> 
> Okay, you even haven't compiled your code :-( This should probably use one of
> the functions from bitfield.h.
> Like u32_encode_bits().

I wasn’t able to encounter and trigger this kind of warning in my build. I built 
and tested the code with rpi4 and linux kernel source tree before sending the patch. 
Perhaps I missed something. I will check and try to resolve this warning.

Thanks and best regards,
Kim Seer Paller