Re: [RFC v6 net-next 6/9] mfd: ocelot: add support for external mfd control over SPI for the VSC7512

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

Hi Colin,

[FYI, it's a private test report for your RFC patch.]
[auto build test WARNING on net-next/master]

url:    https://github.com/0day-ci/linux/commits/Colin-Foster/add-support-for-VSC7512-control-over-SPI/20220130-060423
base:   https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git ff58831fa02deb42fd731f830d8d9ec545573c7c
config: arm64-allmodconfig (https://download.01.org/0day-ci/archive/20220130/202201301017.FqxdEjuR-lkp@intel.com/config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 33b45ee44b1f32ffdbc995e6fec806271b4b3ba4)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # install arm64 cross compiling tool for clang build
        # apt-get install binutils-aarch64-linux-gnu
        # https://github.com/0day-ci/linux/commit/17c4774323c71c0893e531a24ebf76192cc78fd0
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Colin-Foster/add-support-for-VSC7512-control-over-SPI/20220130-060423
        git checkout 17c4774323c71c0893e531a24ebf76192cc78fd0
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm64 SHELL=/bin/bash drivers/firmware/xilinx/ drivers/gpu/drm/amd/display/amdgpu_dm/ drivers/mfd/

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

All warnings (new ones prefixed by >>):

>> drivers/mfd/ocelot-core.c:70:16: warning: no previous prototype for function 'ocelot_get_regmap_from_resource' [-Wmissing-prototypes]
   struct regmap *ocelot_get_regmap_from_resource(struct device *dev,
                  ^
   drivers/mfd/ocelot-core.c:70:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   struct regmap *ocelot_get_regmap_from_resource(struct device *dev,
   ^
   static 
   1 warning generated.


vim +/ocelot_get_regmap_from_resource +70 drivers/mfd/ocelot-core.c

    69	
  > 70	struct regmap *ocelot_get_regmap_from_resource(struct device *dev,
    71						       const struct resource *res)
    72	{
    73		struct ocelot_core *core = dev_get_drvdata(dev);
    74	
    75		return ocelot_devm_regmap_init(core, dev, res);
    76	}
    77	EXPORT_SYMBOL(ocelot_get_regmap_from_resource);
    78	

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