linux-kernel - [ammarfaizi2-block:google/android/kernel/common/android-4.19-stable 5226/9999] sound/soc/soc-core.c:761:27: warning: no previous prototype for function 'soc_find_component

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Date:   Wed, 9 Mar 2022 08:11:36 +0800
From:   kernel test robot <lkp@...el.com>
To:     Aditya Bavanari <abavanar@...eaurora.org>
Cc:     llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
        GNU/Weeb Mailing List <gwml@...r.gnuweeb.org>,
        linux-kernel@...r.kernel.org, Alistair Delva <adelva@...gle.com>,
        Will McVicker <willmcvicker@...gle.com>
Subject: [ammarfaizi2-block:google/android/kernel/common/android-4.19-stable
 5226/9999] sound/soc/soc-core.c:761:27: warning: no previous prototype for
 function 'soc_find_component_locked'

Hi Aditya,

FYI, the error/warning still remains.

tree:   https://github.com/ammarfaizi2/linux-block google/android/kernel/common/android-4.19-stable
head:   3fba6c6e70994eff4dcc5be475c9d2bd3848b83d
commit: 75fe91933be2dd4b884ca83bd72e1e0f0d05cfc6 [5226/9999] ANDROID: ASoC: core: add locked version of soc_find_component
config: x86_64-randconfig-a014 (https://download.01.org/0day-ci/archive/20220309/202203090820.wqQmG5sl-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project a2e9c68fcd4425fbce7380746e916966f00a39a0)
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/75fe91933be2dd4b884ca83bd72e1e0f0d05cfc6
        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 75fe91933be2dd4b884ca83bd72e1e0f0d05cfc6
        # 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 sound/soc/

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 >>):

>> sound/soc/soc-core.c:761:27: warning: no previous prototype for function 'soc_find_component_locked' [-Wmissing-prototypes]
   struct snd_soc_component *soc_find_component_locked(
                             ^
   sound/soc/soc-core.c:761:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   struct snd_soc_component *soc_find_component_locked(
   ^
   static 
   1 warning generated.
   sound/soc/soc-core.c:2971: warning: Excess function parameter 'legacy_dai_naming' description in 'snd_soc_register_dais'
   sound/soc/soc-core.c:3333: warning: Function parameter or member 'online' not described in 'snd_soc_card_change_online_state'


vim +/soc_find_component_locked +761 sound/soc/soc-core.c

   750	
   751	/**
   752	 * soc_find_component_locked: soc_find_component with client lock acquired
   753	 *
   754	 * @of_node: of_node of the component to query.
   755	 * @name: name of the component to query.
   756	 *
   757	 * function to find out if a component is already registered with ASoC core.
   758	 *
   759	 * Returns component handle for success, else NULL error.
   760	 */
 > 761	struct snd_soc_component *soc_find_component_locked(
   762		const struct device_node *of_node, const char *name)
   763	{
   764		struct snd_soc_component *component = NULL;
   765	
   766		mutex_lock(&client_mutex);
   767		component = soc_find_component(of_node, name);
   768		mutex_unlock(&client_mutex);
   769		return component;
   770	}
   771	EXPORT_SYMBOL(soc_find_component_locked);
   772	

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