linux-kernel - [ammarfaizi2-block:google/android/kernel/common/android-4.19-stable 61/9999] drivers/clk/clk.c:3145:5: warning: no previous prototype for function 'clk_set

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Date:   Tue, 1 Feb 2022 18:52:38 +0800
From:   kernel test robot <lkp@...el.com>
To:     Saravana Kannan <saravanak@...gle.com>
Cc:     llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
        GNU/Weeb Mailing List <gwml@...weeb.org>,
        linux-kernel@...r.kernel.org,
        David Collins <collinsd@...eaurora.org>,
        David Dai <daidavid1@...eaurora.org>,
        Deepak Katragadda <dkatraga@...eaurora.org>,
        Shefali Jain <shefjain@...eaurora.org>,
        Stephen Boyd <sboyd@...eaurora.org>,
        Taniya Das <tdas@...eaurora.org>
Subject: [ammarfaizi2-block:google/android/kernel/common/android-4.19-stable
 61/9999] drivers/clk/clk.c:3145:5: warning: no previous prototype for
 function 'clk_set_flags'

tree:   https://github.com/ammarfaizi2/linux-block google/android/kernel/common/android-4.19-stable
head:   b45c5eeda8dea785e3d411380b486a209768f6b2
commit: 3179a1a38d96f565a2229b9244285c6abf62b10a [61/9999] ANDROID: GKI: clk: Add support for voltage voting
config: x86_64-randconfig-r026-20220131 (https://download.01.org/0day-ci/archive/20220201/202202011809.jx2dKFgs-lkp@intel.com/config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 6b1e844b69f15bb7dffaf9365cd2b355d2eb7579)
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/ammarfaizi2/linux-block/commit/3179a1a38d96f565a2229b9244285c6abf62b10a
        git remote add ammarfaizi2-block https://github.com/ammarfaizi2/linux-block
        git fetch --no-tags ammarfaizi2-block google/android/kernel/common/android-4.19-stable
        git checkout 3179a1a38d96f565a2229b9244285c6abf62b10a
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/clk/ drivers/nvmem/ kernel/sched/

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

All warnings (new ones prefixed by >>):

   drivers/clk/clk.c:624:24: warning: variable 'ignore' set but not used [-Wunused-but-set-variable]
           int level, rc = 0, i, ignore;
                                 ^
>> drivers/clk/clk.c:3145:5: warning: no previous prototype for function 'clk_set_flags' [-Wmissing-prototypes]
   int clk_set_flags(struct clk *clk, unsigned long flags)
       ^
   drivers/clk/clk.c:3145:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   int clk_set_flags(struct clk *clk, unsigned long flags)
   ^
   static 
>> drivers/clk/clk.c:3157:6: warning: no previous prototype for function 'clk_debug_print_hw' [-Wmissing-prototypes]
   void clk_debug_print_hw(struct clk_core *clk, struct seq_file *f)
        ^
   drivers/clk/clk.c:3157:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void clk_debug_print_hw(struct clk_core *clk, struct seq_file *f)
   ^
   static 
   3 warnings generated.
   drivers/clk/clk.c:4257: warning: Function parameter or member 'dev' not described in 'devm_clk_unregister'
   drivers/clk/clk.c:4455: warning: Function parameter or member 'get_hw' not described in 'of_clk_provider'


vim +/clk_set_flags +3145 drivers/clk/clk.c

  3144	
> 3145	int clk_set_flags(struct clk *clk, unsigned long flags)
  3146	{
  3147		if (!clk)
  3148			return 0;
  3149	
  3150		if (!clk->core->ops->set_flags)
  3151			return -EINVAL;
  3152	
  3153		return clk->core->ops->set_flags(clk->core->hw, flags);
  3154	}
  3155	EXPORT_SYMBOL_GPL(clk_set_flags);
  3156	
> 3157	void clk_debug_print_hw(struct clk_core *clk, struct seq_file *f)
  3158	{
  3159	}
  3160	EXPORT_SYMBOL(clk_debug_print_hw);
  3161	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org