Hi Sean,

I love your patch! Yet something to improve:

[auto build test ERROR on v6.1-rc7]
[also build test ERROR on linus/master]
[cannot apply to abelloni/rtc-next next-20221202]
[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/Sean-Anderson/rtc-abx80x-Add-nvmem-support/20221202-070301
patch link:    https://lore.kernel.org/r/20221201230208.713118-1-sean.anderson%40seco.com
patch subject: [PATCH] rtc: abx80x: Add nvmem support
config: x86_64-randconfig-a014
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/6dbbdf7eef71cb4255c6751bc9762cf02a0f53b6
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Sean-Anderson/rtc-abx80x-Add-nvmem-support/20221202-070301
        git checkout 6dbbdf7eef71cb4255c6751bc9762cf02a0f53b6
        # 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

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

All errors (new ones prefixed by >>):

>> drivers/rtc/rtc-abx80x.c:695:11: error: implicit declaration of function 'FIELD_GET' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
                   lower = FIELD_GET(NVMEM_ADDR_LOWER, offset);
                           ^
>> drivers/rtc/rtc-abx80x.c:697:12: error: implicit declaration of function 'FIELD_PREP' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
                   extram = FIELD_PREP(ABX8XX_EXTRAM_XADS, upper);
                            ^
   drivers/rtc/rtc-abx80x.c:697:12: note: did you mean 'FIELD_GET'?
   drivers/rtc/rtc-abx80x.c:695:11: note: 'FIELD_GET' declared here
                   lower = FIELD_GET(NVMEM_ADDR_LOWER, offset);
                           ^
   2 errors generated.


vim +/FIELD_GET +695 drivers/rtc/rtc-abx80x.c

   685	
   686	#ifdef CONFIG_NVMEM
   687	static int abx80x_nvmem_xfer(struct abx80x_priv *priv, unsigned int offset,
   688				     void *val, size_t bytes, bool write)
   689	{
   690		int ret;
   691	
   692		while (bytes) {
   693			u8 extram, reg, len, lower, upper;
   694	
 > 695			lower = FIELD_GET(NVMEM_ADDR_LOWER, offset);
   696			upper = FIELD_GET(NVMEM_ADDR_UPPER, offset);
 > 697			extram = FIELD_PREP(ABX8XX_EXTRAM_XADS, upper);
   698			reg = ABX8XX_SRAM_BASE + lower;
   699			len = min(lower + bytes, (size_t)ABX8XX_SRAM_WIN_SIZE) - lower;
   700			len = min_t(u8, len, I2C_SMBUS_BLOCK_MAX);
   701	
   702			ret = i2c_smbus_write_byte_data(priv->client, ABX8XX_REG_EXTRAM,
   703							extram);
   704			if (ret)
   705				return ret;
   706	
   707			if (write)
   708				ret = i2c_smbus_write_i2c_block_data(priv->client, reg,
   709								     len, val);
   710			else
   711				ret = i2c_smbus_read_i2c_block_data(priv->client, reg,
   712								    len, val);
   713			if (ret)
   714				return ret;
   715	
   716			offset += len;
   717			val += len;
   718			bytes -= len;
   719		}
   720	
   721		return 0;
   722	}
   723	

-- 
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https://01.org/lkp