Hi Arun,

[FYI, it's a private test report for your RFC patch.]
[auto build test WARNING on net-next/master]

url:    https://github.com/intel-lab-lkp/linux/commits/Arun-Ramadoss/net-dsa-microchip-add-PTP-support-for-KSZ9x-and-LAN937x/20221121-234819
patch link:    https://lore.kernel.org/r/20221121154150.9573-7-arun.ramadoss%40microchip.com
patch subject: [RFC Patch net-next v2 6/8] net: dsa: microchip: Adding the ptp packet reception logic
config: arc-randconfig-r033-20221120
compiler: arc-elf-gcc (GCC) 12.1.0
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/c747439df1f02c175acdcfc248660b650f0941f3
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Arun-Ramadoss/net-dsa-microchip-add-PTP-support-for-KSZ9x-and-LAN937x/20221121-234819
        git checkout c747439df1f02c175acdcfc248660b650f0941f3
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=arc SHELL=/bin/bash drivers/net/

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 >>):

   In file included from drivers/net/dsa/microchip/ksz_common.h:20,
                    from drivers/net/dsa/microchip/ksz_common.c:26:
>> drivers/net/dsa/microchip/ksz_ptp.h:74:6: warning: no previous prototype for 'ksz_is_ptp_twostep' [-Wmissing-prototypes]
      74 | bool ksz_is_ptp_twostep(struct dsa_switch *ds, unsigned int port)
         |      ^~~~~~~~~~~~~~~~~~


vim +/ksz_is_ptp_twostep +74 drivers/net/dsa/microchip/ksz_ptp.h

    73	
  > 74	bool ksz_is_ptp_twostep(struct dsa_switch *ds, unsigned int port)
    75	{
    76		return 0;
    77	}
    78	

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