netdev - Re: [PATCH net 3/3] net: dsa: mv88e6xxx: support 4000ps cycle counter period

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Message-ID: <202410011454.X1kiOgOz-lkp@intel.com>
Date: Tue, 1 Oct 2024 15:32:54 +0800
From: kernel test robot <lkp@...el.com>
To: Shenghao Yang <me@...nghaoyang.info>, netdev@...r.kernel.org
Cc: oe-kbuild-all@...ts.linux.dev, Shenghao Yang <me@...nghaoyang.info>,
	f.fainelli@...il.com, olteanv@...il.com, pavana.sharma@...i.com,
	ashkan.boldaji@...i.com, kabel@...nel.org, andrew@...n.ch
Subject: Re: [PATCH net 3/3] net: dsa: mv88e6xxx: support 4000ps cycle
 counter period

Hi Shenghao,

kernel test robot noticed the following build warnings:

[auto build test WARNING on net/main]

url:    https://github.com/intel-lab-lkp/linux/commits/Shenghao-Yang/net-dsa-mv88e6xxx-group-cycle-counter-coefficients/20240929-182245
base:   net/main
patch link:    https://lore.kernel.org/r/20240929101949.723658-5-me%40shenghaoyang.info
patch subject: [PATCH net 3/3] net: dsa: mv88e6xxx: support 4000ps cycle counter period
config: sparc64-randconfig-r133-20240930 (https://download.01.org/0day-ci/archive/20241001/202410011454.X1kiOgOz-lkp@intel.com/config)
compiler: sparc64-linux-gcc (GCC) 14.1.0
reproduce: (https://download.01.org/0day-ci/archive/20241001/202410011454.X1kiOgOz-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202410011454.X1kiOgOz-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
   drivers/net/dsa/mv88e6xxx/ptp.c:35:34: sparse: sparse: symbol 'mv88e6xxx_cc_10ns_coeffs' was not declared. Should it be static?
   drivers/net/dsa/mv88e6xxx/ptp.c:49:34: sparse: sparse: symbol 'mv88e6xxx_cc_8ns_coeffs' was not declared. Should it be static?
>> drivers/net/dsa/mv88e6xxx/ptp.c:63:34: sparse: sparse: symbol 'mv88e6xxx_cc_4ns_coeffs' was not declared. Should it be static?

vim +/mv88e6xxx_cc_4ns_coeffs +63 drivers/net/dsa/mv88e6xxx/ptp.c

    55	
    56	/* Family MV88E6393X using internal clock:
    57	 * Raw timestamps are in units of 4-ns clock periods.
    58	 *
    59	 * clkadj = scaled_ppm * 4*2^28 / (10^6 * 2^16)
    60	 * simplifies to
    61	 * clkadj = scaled_ppm * 2^8 / 5^6
    62	 */
  > 63	const struct mv88e6xxx_cc_coeffs mv88e6xxx_cc_4ns_coeffs = {
    64		.cc_shift = 28,
    65		.cc_mult = 4 << 28,
    66		.cc_mult_num = 1 << 8,
    67		.cc_mult_dem = 15625ULL
    68	};
    69	

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