Re: [PATCH v3 1/3] iio: dac: add support for ltc2688

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

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Hi "Nuno,

I love your patch! Perhaps something to improve:

[auto build test WARNING on jic23-iio/togreg]
[also build test WARNING on robh/for-next linus/master v5.17-rc1 next-20220124]
[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]

url:    https://github.com/0day-ci/linux/commits/Nuno-S/Add-support-for-LTC2688/20220121-222705
base:   https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git togreg
config: i386-randconfig-s031-20220124 (https://download.01.org/0day-ci/archive/20220124/202201241727.j3X0hKVI-lkp(a)intel.com/config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce:
        # apt-get install sparse
        # sparse version: v0.6.4-dirty
        # https://github.com/0day-ci/linux/commit/2493f2a925ebd05e3afc2e5632452566cfa6cbb5
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Nuno-S/Add-support-for-LTC2688/20220121-222705
        git checkout 2493f2a925ebd05e3afc2e5632452566cfa6cbb5
        # save the config file to linux build tree
        mkdir build_dir
        make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=i386 SHELL=/bin/bash drivers/iio/dac/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>


sparse warnings: (new ones prefixed by >>)
>> drivers/iio/dac/ltc2688.c:942:19: sparse: sparse: symbol 'ltc2688_regmap_bus' was not declared. Should it be static?

Please review and possibly fold the followup patch.

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org