[morimoto:sound2-2022-07-08-v1 9/18] sound/soc/soc-core.c:966:5: warning: no previous prototype for '__snd_soc_add_pcm_runtime'

From: kernel test robot
Date: Tue Jul 19 2022 - 18:20:42 EST


tree: https://github.com/morimoto/linux sound2-2022-07-08-v1
head: b5e8d2766050dfd3452dcdcdff072121984c9a31
commit: 525984dfed23d3f036e4c9bd8f8a72bec3823ffb [9/18] ASoC: force to use DPCM on normal connection
config: loongarch-randconfig-r034-20220718 (https://download.01.org/0day-ci/archive/20220720/202207200605.fs9SeJdA-lkp@xxxxxxxxx/config)
compiler: loongarch64-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/morimoto/linux/commit/525984dfed23d3f036e4c9bd8f8a72bec3823ffb
git remote add morimoto https://github.com/morimoto/linux
git fetch --no-tags morimoto sound2-2022-07-08-v1
git checkout 525984dfed23d3f036e4c9bd8f8a72bec3823ffb
# 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=loongarch SHELL=/bin/bash sound/soc/

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

All warnings (new ones prefixed by >>):

>> sound/soc/soc-core.c:966:5: warning: no previous prototype for '__snd_soc_add_pcm_runtime' [-Wmissing-prototypes]
966 | int __snd_soc_add_pcm_runtime(struct snd_soc_card *card,
| ^~~~~~~~~~~~~~~~~~~~~~~~~


vim +/__snd_soc_add_pcm_runtime +966 sound/soc/soc-core.c

954
955 /**
956 * snd_soc_add_pcm_runtime - Add a pcm_runtime dynamically via dai_link
957 * @card: The ASoC card to which the pcm_runtime is added
958 * @dai_link: The DAI link to find pcm_runtime
959 *
960 * This function adds a pcm_runtime ASoC card by using dai_link.
961 *
962 * Note: Topology can use this API to add pcm_runtime when probing the
963 * topology component. And machine drivers can still define static
964 * DAI links in dai_link array.
965 */
> 966 int __snd_soc_add_pcm_runtime(struct snd_soc_card *card,
967 struct snd_soc_dai_link *dai_link)
968 {
969 struct snd_soc_pcm_runtime *rtd;
970 struct snd_soc_dai_link_component *codec, *platform, *cpu;
971 struct snd_soc_component *component;
972 int i, ret;
973
974 lockdep_assert_held(&client_mutex);
975
976 /*
977 * Notify the machine driver for extra initialization
978 */
979 ret = snd_soc_card_add_dai_link(card, dai_link);
980 if (ret < 0)
981 return ret;
982
983 if (dai_link->ignore)
984 return 0;
985
986 dev_dbg(card->dev, "ASoC: binding %s\n", dai_link->name);
987
988 ret = soc_dai_link_sanity_check(card, dai_link);
989 if (ret < 0)
990 return ret;
991
992 rtd = soc_new_pcm_runtime(card, dai_link);
993 if (!rtd)
994 return -ENOMEM;
995
996 for_each_link_cpus(dai_link, i, cpu) {
997 asoc_rtd_to_cpu(rtd, i) = snd_soc_find_dai(cpu);
998 if (!asoc_rtd_to_cpu(rtd, i)) {
999 dev_info(card->dev, "ASoC: CPU DAI %s not registered\n",
1000 cpu->dai_name);
1001 goto _err_defer;
1002 }
1003 snd_soc_rtd_add_component(rtd, asoc_rtd_to_cpu(rtd, i)->component);
1004 }
1005
1006 /* Find CODEC from registered CODECs */
1007 for_each_link_codecs(dai_link, i, codec) {
1008 asoc_rtd_to_codec(rtd, i) = snd_soc_find_dai(codec);
1009 if (!asoc_rtd_to_codec(rtd, i)) {
1010 dev_info(card->dev, "ASoC: CODEC DAI %s not registered\n",
1011 codec->dai_name);
1012 goto _err_defer;
1013 }
1014
1015 snd_soc_rtd_add_component(rtd, asoc_rtd_to_codec(rtd, i)->component);
1016 }
1017
1018 /* Find PLATFORM from registered PLATFORMs */
1019 for_each_link_platforms(dai_link, i, platform) {
1020 for_each_component(component) {
1021 if (!snd_soc_is_matching_component(platform, component))
1022 continue;
1023
1024 snd_soc_rtd_add_component(rtd, component);
1025 }
1026 }
1027
1028 return 0;
1029
1030 _err_defer:
1031 snd_soc_remove_pcm_runtime(card, rtd);
1032 return -EPROBE_DEFER;
1033 }
1034

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