Hi Shenghao, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on broonie-sound/for-next] [also build test WARNING on linus/master v6.3-rc3 next-20230323] [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#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Shenghao-Ding/ASoC-tas2781-Add-tas2781-driver/20230324-190955 base: https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-next patch link: https://lore.kernel.org/r/20230324110755.27652-1-13916275206%40139.com patch subject: [PATCH v6] ASoC: tas2781: Add tas2781 driver config: arm-randconfig-r021-20230322 (https://download.01.org/0day-ci/archive/20230325/202303251653.7HZjyxTf-lkp@xxxxxxxxx/config) compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project 67409911353323ca5edf2049ef0df54132fa1ca7) 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/intel-lab-lkp/linux/commit/ae727fb08bb90265d16859aa62c7c956e46841ee git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Shenghao-Ding/ASoC-tas2781-Add-tas2781-driver/20230324-190955 git checkout ae727fb08bb90265d16859aa62c7c956e46841ee # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm SHELL=/bin/bash sound/soc/codecs/ If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Link: https://lore.kernel.org/oe-kbuild-all/202303251653.7HZjyxTf-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): >> sound/soc/codecs/tas2781-dsp.c:1357:6: warning: variable 'ret' is used uninitialized whenever 'if' condition is false [-Wsometimes-uninitialized] if (in) { ^~ sound/soc/codecs/tas2781-dsp.c:1378:9: note: uninitialized use occurs here return ret; ^~~ sound/soc/codecs/tas2781-dsp.c:1357:2: note: remove the 'if' if its condition is always true if (in) { ^~~~~~~~ sound/soc/codecs/tas2781-dsp.c:1343:9: note: initialize the variable 'ret' to silence this warning int ret; ^ = 0 sound/soc/codecs/tas2781-dsp.c:1407:6: warning: variable 'ret' is used uninitialized whenever 'if' condition is false [-Wsometimes-uninitialized] if (in) { ^~ sound/soc/codecs/tas2781-dsp.c:1444:9: note: uninitialized use occurs here return ret; ^~~ sound/soc/codecs/tas2781-dsp.c:1407:2: note: remove the 'if' if its condition is always true if (in) { ^~~~~~~~ sound/soc/codecs/tas2781-dsp.c:1388:9: note: initialize the variable 'ret' to silence this warning int ret, i; ^ = 0 2 warnings generated. vim +1357 sound/soc/codecs/tas2781-dsp.c 1336 1337 static int do_singlereg_checksum(struct tasdevice_priv *tasdevice, 1338 enum channel chl, unsigned char book, unsigned char page, 1339 unsigned char reg, unsigned char val) 1340 { 1341 struct tas_crc crc_data; 1342 unsigned int nData1; 1343 int ret; 1344 bool in; 1345 1346 if ((book == TASDEVICE_BOOK_ID(TAS2781_SA_COEFF_SWAP_REG)) 1347 && (page == TASDEVICE_PAGE_ID(TAS2781_SA_COEFF_SWAP_REG)) 1348 && (reg >= TASDEVICE_PAGE_REG(TAS2781_SA_COEFF_SWAP_REG)) 1349 && (reg <= (TASDEVICE_PAGE_REG( 1350 TAS2781_SA_COEFF_SWAP_REG) + 4))) { 1351 /*DSP swap command, pass */ 1352 ret = 0; 1353 goto end; 1354 } 1355 1356 in = check_yram(&crc_data, book, page, reg, 1); > 1357 if (in) { 1358 ret = tasdevice_dev_read(tasdevice, chl, 1359 TASDEVICE_REG(book, page, reg), &nData1); 1360 if (ret < 0) 1361 goto end; 1362 1363 if (nData1 != val) { 1364 dev_err(tasdevice->dev, 1365 "B[0x%x]P[0x%x]R[0x%x] W[0x%x], R[0x%x]\n", 1366 book, page, reg, 1367 val, nData1); 1368 tasdevice->tasdevice[chl].err_code |= 1369 ERROR_YRAM_CRCCHK; 1370 ret = -EAGAIN; 1371 goto end; 1372 } 1373 1374 ret = crc8(tasdevice->crc8_lkp_tbl, &val, 1, 0); 1375 } 1376 1377 end: 1378 return ret; 1379 } 1380 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests
