Hi Mark, I love your patch! Yet something to improve: [auto build test ERROR on asoc/for-next] [also build test ERROR on v5.14-rc2 next-20210723] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/Mark-Brown/ASoC-tlv320aic31xx-Fi... base: https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-next config: arm-randconfig-r022-20210723 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 9625ca5b602616b2f5584e8a49ba93c52c141e40) 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 arm cross compiling tool for clang build # apt-get install binutils-arm-linux-gnueabi # https://github.com/0day-ci/linux/commit/fd727e56e60de06a923175ce246e965e2... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Mark-Brown/ASoC-tlv320aic31xx-Fix-jack-detection-after-suspend/20210724-020429 git checkout fd727e56e60de06a923175ce246e965e27c6df88 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): aic31xx_set_jack(component, aic31xx->jack, NULL); ^ sound/soc/codecs/tlv320aic31xx.c:1312:12: error: static declaration of 'aic31xx_set_jack' follows non-static declaration static int aic31xx_set_jack(struct snd_soc_component *component, ^ sound/soc/codecs/tlv320aic31xx.c:1264:2: note: previous implicit declaration is here aic31xx_set_jack(component, aic31xx->jack, NULL); ^ 2 errors generated. vim +/aic31xx_set_jack +1264 sound/soc/codecs/tlv320aic31xx.c 1231 1232 static int aic31xx_power_on(struct snd_soc_component *component) 1233 { 1234 struct aic31xx_priv *aic31xx = snd_soc_component_get_drvdata(component); 1235 int ret; 1236 1237 ret = regulator_bulk_enable(ARRAY_SIZE(aic31xx->supplies), 1238 aic31xx->supplies); 1239 if (ret) 1240 return ret; 1241 1242 regcache_cache_only(aic31xx->regmap, false); 1243 1244 /* Reset device registers for a consistent power-on like state */ 1245 ret = aic31xx_reset(aic31xx); 1246 if (ret < 0) 1247 dev_err(aic31xx->dev, "Could not reset device: %d\n", ret); 1248 1249 ret = regcache_sync(aic31xx->regmap); 1250 if (ret) { 1251 dev_err(component->dev, 1252 "Failed to restore cache: %d\n", ret); 1253 regcache_cache_only(aic31xx->regmap, true); 1254 regulator_bulk_disable(ARRAY_SIZE(aic31xx->supplies), 1255 aic31xx->supplies); 1256 return ret; 1257 } 1258 1259 /* 1260 * The jack detection configuration is in the same register 1261 * that is used to report jack detect status so is volatile 1262 * and not covered by the cache sync, restore it separately. 1263 */ 1265 1266 return 0; 1267 } 1268 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org