tree: https://github.com/0day-ci/linux/commits/UPDATE-20220119-210919/Joerg-Sch... head: 05b8bf5544bc621031f5a0a6bdf1ac6468a7367b commit: 05b8bf5544bc621031f5a0a6bdf1ac6468a7367b ASoC: adds component driver for TAS575xM digital amplifiers date: 5 hours ago config: riscv-randconfig-c006-20220118 (https://download.01.org/0day-ci/archive/20220120/202201200259.nNgbKOJd-lk...) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project f7b7138a62648f4019c55e4671682af1f851f295) 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 # install riscv cross compiling tool for clang build # apt-get install binutils-riscv64-linux-gnu # https://github.com/0day-ci/linux/commit/05b8bf5544bc621031f5a0a6bdf1ac646... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review UPDATE-20220119-210919/Joerg-Schambacher/ASoC-adds-component-driver-for-TAS575xM-digital-amplifiers/20220110-164852 git checkout 05b8bf5544bc621031f5a0a6bdf1ac6468a7367b # 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=riscv SHELL=/bin/bash sound/soc/codecs/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): case SND_SOC_BIAS_ON: ^~~~~~~~~~~~~~~ sound/soc/codecs/tas5754m.c:267:9: note: uninitialized use occurs here return ret; ^~~ sound/soc/codecs/tas5754m.c:247:7: warning: variable 'ret' is used uninitialized whenever switch case is taken [-Wsometimes-uninitialized] case SND_SOC_BIAS_PREPARE: ^~~~~~~~~~~~~~~~~~~~ sound/soc/codecs/tas5754m.c:267:9: note: uninitialized use occurs here return ret; ^~~ sound/soc/codecs/tas5754m.c:242:9: note: initialize the variable 'ret' to silence this warning int ret; ^ = 0 2 warnings generated. vim +/ret +246 sound/soc/codecs/tas5754m.c 236 237 static int tas5754m_set_bias_level(struct snd_soc_component *component, 238 enum snd_soc_bias_level level) 239 { 240 struct tas5754m_priv *tas5754m = 241 snd_soc_component_get_drvdata(component); 242 int ret; 243 244 switch (level) { 245 default: 247 case SND_SOC_BIAS_PREPARE: 248 break; 249 250 case SND_SOC_BIAS_STANDBY: 251 ret = regmap_update_bits(tas5754m->regmap, 252 TAS5754M_POWER, TAS5754M_RQST, 0); 253 if (ret) 254 dev_err(component->dev, 255 "Failed to remove standby: %d\n", ret); 256 break; 257 258 case SND_SOC_BIAS_OFF: 259 ret = regmap_update_bits(tas5754m->regmap, 260 TAS5754M_POWER, TAS5754M_RQST, TAS5754M_RQST); 261 if (ret) 262 dev_err(component->dev, 263 "Failed to request standby: %d\n", ret); 264 break; 265 } 266 267 return ret; 268 } 269 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org