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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: 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 (
compiler: clang version 15.0.0 ( a2e9c68fcd4425fbce7380746e916966f00a39a0)
reproduce (this is a W=1 build):
wget -O ~/bin/make.cross
chmod +x ~/bin/make.cross
git remote add ammarfaizi2-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 <>

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(
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

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;
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);

0-DAY CI Kernel Test Service, Intel Corporation

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