Re: [PATCH] nvdimm: Avoid wasting some memory.

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

Hi Christophe,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on v6.0-rc3]
[also build test WARNING on linus/master next-20220901]
[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/Christophe-JAILLET/nvdimm-Avoid-wasting-some-memory/20220904-215140
base:    b90cb1053190353cc30f0fef0ef1f378ccc063c5
config: x86_64-randconfig-a014 (https://download.01.org/0day-ci/archive/20220905/202209050000.tAI7TSe5-lkp@intel.com/config)
compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project f28c006a5895fc0e329fe15fead81e37457cb1d1)
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
        # https://github.com/intel-lab-lkp/linux/commit/af94e709929390501b3d2f6e933fa0c1244a2029
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Christophe-JAILLET/nvdimm-Avoid-wasting-some-memory/20220904-215140
        git checkout af94e709929390501b3d2f6e933fa0c1244a2029
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/nvdimm/

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

All warnings (new ones prefixed by >>):

>> drivers/nvdimm/btt_devs.c:335:6: warning: no previous prototype for function 'nd_btt_free' [-Wmissing-prototypes]
   void nd_btt_free(void *data)
        ^
   drivers/nvdimm/btt_devs.c:335:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void nd_btt_free(void *data)
   ^
   static 
   1 warning generated.


vim +/nd_btt_free +335 drivers/nvdimm/btt_devs.c

   334	
 > 335	void nd_btt_free(void *data)
   336	{
   337		kfree(data);
   338	}
   339	

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https://01.org/lkp