Re: [PATCH 4/4] serial: max310x: implement I2C support

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

Hi Cosmin,

I love your patch! Perhaps something to improve:

[auto build test WARNING on tty/tty-testing]
[also build test WARNING on usb/usb-testing v5.18 next-20220531]
[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/intel-lab-lkp/linux/commits/Cosmin-Tanislav/serial-max310x-use-regmap-methods-for-SPI-batch-operations/20220531-061619
base:   https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty.git tty-testing
config: arm64-allmodconfig (https://download.01.org/0day-ci/archive/20220601/202206010102.px37QPmH-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project c825abd6b0198fb088d9752f556a70705bc99dfd)
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 arm64 cross compiling tool for clang build
        # apt-get install binutils-aarch64-linux-gnu
        # https://github.com/intel-lab-lkp/linux/commit/6c293b95fc5654df5353ba273a9bbd08f1cd3f3a
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Cosmin-Tanislav/serial-max310x-use-regmap-methods-for-SPI-batch-operations/20220531-061619
        git checkout 6c293b95fc5654df5353ba273a9bbd08f1cd3f3a
        # 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=arm64 SHELL=/bin/bash drivers/tty/serial/

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/tty/serial/max310x.c:1658:1: warning: unused label 'err_i2c_register' [-Wunused-label]
   err_i2c_register:
   ^~~~~~~~~~~~~~~~~
   1 warning generated.


vim +/err_i2c_register +1658 drivers/tty/serial/max310x.c

  1652	
  1653		return 0;
  1654	
  1655	err_spi_register:
  1656		spi_unregister_driver(&max310x_spi_driver);
  1657	
> 1658	err_i2c_register:
  1659		uart_unregister_driver(&max310x_uart);
  1660	
  1661		return ret;
  1662	}
  1663	module_init(max310x_uart_init);
  1664	

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp