Re: [PATCH v6 1/1] serial: core: Start managing serial controllers to enable runtime PM

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

Hi Tony,

I love your patch! Perhaps something to improve:

[auto build test WARNING on tty/tty-testing]
[also build test WARNING on tty/tty-next tty/tty-linus rafael-pm/linux-next usb/usb-testing usb/usb-next usb/usb-linus linus/master v6.3-rc1 next-20230309]
[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/Tony-Lindgren/serial-core-Start-managing-serial-controllers-to-enable-runtime-PM/20230309-170149
base:   https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty.git tty-testing
patch link:    https://lore.kernel.org/r/20230309085713.57700-1-tony%40atomide.com
patch subject: [PATCH v6 1/1] serial: core: Start managing serial controllers to enable runtime PM
config: i386-allnoconfig (https://download.01.org/0day-ci/archive/20230310/202303100833.lk1UVhcR-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/08f76f28e32bcd3c093e4af349b0e1b60328395e
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Tony-Lindgren/serial-core-Start-managing-serial-controllers-to-enable-runtime-PM/20230309-170149
        git checkout 08f76f28e32bcd3c093e4af349b0e1b60328395e
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=i386 olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=i386 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>
| Link: https://lore.kernel.org/oe-kbuild-all/202303100833.lk1UVhcR-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> drivers/tty/serial/serial_ctrl.c:17:34: warning: unused variable 'serial_ctrl_pm' [-Wunused-const-variable]
   static DEFINE_RUNTIME_DEV_PM_OPS(serial_ctrl_pm, NULL, NULL, NULL);
                                    ^
   1 warning generated.


vim +/serial_ctrl_pm +17 drivers/tty/serial/serial_ctrl.c

    16	
  > 17	static DEFINE_RUNTIME_DEV_PM_OPS(serial_ctrl_pm, NULL, NULL, NULL);
    18	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests