Hi,

Thank you for the report.

> 
> Hi Sumit,
> 
> Thank you for the patch! Perhaps something to improve:
> 
> [auto build test WARNING on pm/linux-next]
> [also build test WARNING on robh/for-next arm64/for-next/core v5.8-rc2 next-20200621]
> [If your patch is applied to the wrong git tree, kindly drop us a note.
> And when submitting patch, we suggest to use  as documented in
> https://git-scm.com/docs/git-format-patch]
> 
> url:    https://github.com/0day-ci/linux/commits/Sumit-Gupta/Add-cpufreq-driver-for-Tegra194/20200622-053622
> base:   https://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git linux-next
> config: arm64-allyesconfig (attached as .config)
> compiler: aarch64-linux-gcc (GCC) 9.3.0
> 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
>          # save the attached .config to linux build tree
>          COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm64
> 
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <lkp@intel.com>

Sure.
> 
> All warnings (new ones prefixed by >>, old ones prefixed by <<):
> 
>>> drivers/cpufreq/tegra194-cpufreq.c:86:5: warning: no previous prototype for 'map_freq_to_ndiv' [-Wmissing-prototypes]
> 86 | u16 map_freq_to_ndiv(struct mrq_cpu_ndiv_limits_response *nltbl, u32 freq)
> |     ^~~~~~~~~~~~~~~~
> 
> vim +/map_freq_to_ndiv +86 drivers/cpufreq/tegra194-cpufreq.c
> 
>      85
>    > 86  u16 map_freq_to_ndiv(struct mrq_cpu_ndiv_limits_response *nltbl, u32 freq)
>      87  {
>      88          return DIV_ROUND_UP(freq * nltbl->pdiv * nltbl->mdiv,
>      89                              nltbl->ref_clk_hz / KHZ);
>      90  }
>      91
> 

will take care of this in next version.
> ---
> 0-DAY CI Kernel Test Service, Intel Corporation
> https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
>