Hi Rafał,

I love your patch! Perhaps something to improve:

[auto build test WARNING on shawnguo/for-next]
[also build test WARNING on soc/for-next linus/master v6.1-rc7 next-20221125]
[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/Rafa-Mi-ecki/nvmem-core-refactor-cell_post_process-CB-arguments/20221128-071155
base:   https://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux.git for-next
patch link:    https://lore.kernel.org/r/20221127231035.17547-2-zajec5%40gmail.com
patch subject: [PATCH 2/2] nvmem: u-boot-env: reformat MAC in "ethaddr" cell when reading
config: x86_64-allyesconfig
compiler: gcc-11 (Debian 11.3.0-8) 11.3.0
reproduce (this is a W=1 build):
        # https://github.com/intel-lab-lkp/linux/commit/7ed383c8df3e3a2435255360e03171ebdc4437b4
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Rafa-Mi-ecki/nvmem-core-refactor-cell_post_process-CB-arguments/20221128-071155
        git checkout 7ed383c8df3e3a2435255360e03171ebdc4437b4
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/

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/nvmem/u-boot-env.c: In function 'u_boot_env_cell_post_process':
>> drivers/nvmem/u-boot-env.c:70:28: warning: unused variable 'priv' [-Wunused-variable]
      70 |         struct u_boot_env *priv = context;
         |                            ^~~~


vim +/priv +70 drivers/nvmem/u-boot-env.c

    66	
    67	static int u_boot_env_cell_post_process(void *context, struct nvmem_cell_entry *cell,
    68						const char *id, void *buf, size_t *len)
    69	{
  > 70		struct u_boot_env *priv = context;
    71	
    72		if (!strcmp(cell->name, "ethaddr")) {
    73			u8 mac[ETH_ALEN];
    74	
    75			if (mac_pton(buf, mac)) {
    76				ether_addr_copy(buf, mac);
    77				if (len)
    78					*len = ETH_ALEN;
    79			}
    80		}
    81	
    82		return 0;
    83	}
    84	

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