linux-kernel - [asahilinux:bits/070-audio 46/47] sound/soc/codecs/cs42l84.c:60:6: warning: no previous prototype for 'cs42l84_volatile

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Message-ID: <202210181032.nXpZ5Tm2-lkp@intel.com>
Date:   Tue, 18 Oct 2022 10:58:01 +0800
From:   kernel test robot <lkp@...el.com>
To:     Martin Povišer <povik@...tonmail.com>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        Hector Martin <marcan@...can.st>
Subject: [asahilinux:bits/070-audio 46/47] sound/soc/codecs/cs42l84.c:60:6:
 warning: no previous prototype for 'cs42l84_volatile_register'

tree:   https://github.com/AsahiLinux/linux bits/070-audio
head:   82616e38df8f451aee5113a11de380e620c53035
commit: c51c357b5c5dbbddf9c5a9da33480998f74845a0 [46/47] ASoC: cs42l84: Enable regcache (initially)
config: m68k-allmodconfig
compiler: m68k-linux-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/AsahiLinux/linux/commit/c51c357b5c5dbbddf9c5a9da33480998f74845a0
        git remote add asahilinux https://github.com/AsahiLinux/linux
        git fetch --no-tags asahilinux bits/070-audio
        git checkout c51c357b5c5dbbddf9c5a9da33480998f74845a0
        # 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=m68k SHELL=/bin/bash drivers/platform/ sound/soc/codecs/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@...el.com>

All warnings (new ones prefixed by >>):

>> sound/soc/codecs/cs42l84.c:60:6: warning: no previous prototype for 'cs42l84_volatile_register' [-Wmissing-prototypes]
      60 | bool cs42l84_volatile_register(struct device *dev, unsigned int reg)
         |      ^~~~~~~~~~~~~~~~~~~~~~~~~
   sound/soc/codecs/cs42l84.c: In function 'cs42l84_pll_config':
   sound/soc/codecs/cs42l84.c:404:17: error: implicit declaration of function 'FIELD_PREP' [-Werror=implicit-function-declaration]
     404 |                 FIELD_PREP(CS42L84_ASP_FSYNC_CTL2_BCLK_PERIOD_LO, fsync & 0x7f));
         |                 ^~~~~~~~~~
   sound/soc/codecs/cs42l84.c: At top level:
   sound/soc/codecs/cs42l84.c:57:33: warning: 'cs42l84_reg_defaults' defined but not used [-Wunused-const-variable=]
      57 | static const struct reg_default cs42l84_reg_defaults[] = {
         |                                 ^~~~~~~~~~~~~~~~~~~~
   cc1: some warnings being treated as errors


vim +/cs42l84_volatile_register +60 sound/soc/codecs/cs42l84.c

    59	
  > 60	bool cs42l84_volatile_register(struct device *dev, unsigned int reg)
    61	{
    62		switch (reg) {
    63		case CS42L84_DEVID ... CS42L84_DEVID+5:
    64		case CS42L84_TSRS_PLUG_INT_STATUS:
    65		case CS42L84_PLL_LOCK_STATUS:
    66		case CS42L84_TSRS_PLUG_STATUS:
    67		case CS42L84_HS_DET_STATUS2:
    68			return true;
    69		default:
    70			return false;
    71		}
    72	}
    73	

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

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