Hi Andy,

I love your patch! Yet something to improve:

[auto build test ERROR on wsa/i2c/for-next]
[also build test ERROR on next-20210413]
[cannot apply to linux/master linus/master v5.12-rc7]
[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]

url:    https://github.com/0day-ci/linux/commits/Andy-Shevchenko/i2c-mpc-Use-devm_clk_get_optional/20210413-223941
base:   https://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux.git i2c/for-next
config: powerpc64-randconfig-r015-20210413 (attached as .config)
compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 9829f5e6b1bca9b61efc629770d28bb9014dec45)
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 powerpc64 cross compiling tool for clang build
        # apt-get install binutils-powerpc64-linux-gnu
        # https://github.com/0day-ci/linux/commit/31fed803b49f17742a0bfa9fb3940b5bc487e4dd
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Andy-Shevchenko/i2c-mpc-Use-devm_clk_get_optional/20210413-223941
        git checkout 31fed803b49f17742a0bfa9fb3940b5bc487e4dd
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=powerpc64 

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

All errors (new ones prefixed by >>):

>> drivers/i2c/busses/i2c-mpc.c:824:9: error: use of undeclared identifier 'MPC_I2C_PM_OPS'
                   .pm = MPC_I2C_PM_OPS,
                         ^
   1 error generated.

Kconfig warnings: (for reference only)
   WARNING: unmet direct dependencies detected for SND_SOC_MPC5200_AC97
   Depends on SOUND && !UML && SND && SND_SOC && SND_POWERPC_SOC && PPC_MPC52xx && PPC_BESTCOMM
   Selected by
   - SND_MPC52xx_SOC_EFIKA && SOUND && !UML && SND && SND_SOC && SND_POWERPC_SOC && PPC_EFIKA


vim +/MPC_I2C_PM_OPS +824 drivers/i2c/busses/i2c-mpc.c

0d1cde235874b0 Jon Smirl      2008-06-30  816  
8c86cb127b2b76 Kumar Gala     2005-07-27  817  /* Structure for a device driver */
1c48a5c93da631 Grant Likely   2011-02-17  818  static struct platform_driver mpc_i2c_driver = {
8c86cb127b2b76 Kumar Gala     2005-07-27  819  	.probe		= fsl_i2c_probe,
0b255e927d47b5 Bill Pemberton 2012-11-27  820  	.remove		= fsl_i2c_remove,
3ae5eaec1d2d9c Russell King   2005-11-09  821  	.driver = {
0d1cde235874b0 Jon Smirl      2008-06-30  822  		.name = DRV_NAME,
4018294b53d1da Grant Likely   2010-04-13  823  		.of_match_table = mpc_i2c_of_match,
0a488c49eac0ad Jingoo Han     2013-07-15 @824  		.pm = MPC_I2C_PM_OPS,
3ae5eaec1d2d9c Russell King   2005-11-09  825  	},
8c86cb127b2b76 Kumar Gala     2005-07-27  826  };
8c86cb127b2b76 Kumar Gala     2005-07-27  827  

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