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Subjectsound/soc/jz4740/jz4740-i2s.c:465:34: warning: unused variable 'jz4740_i2s_soc_info'
tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 444565650a5fe9c63ddf153e6198e31705dedeb2
commit: 62f9ed5f8768d2425461737d77b83f888b525c06 ASoC: jz4740-i2s: Avoid passing enum as match data
date: 2 months ago
config: mips-randconfig-r014-20200522 (attached as .config)
compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project 3393cc4cebf9969db94dc424b7a2b6195589c33b)
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 mips cross compiling tool for clang build
# apt-get install binutils-mips-linux-gnu
git checkout 62f9ed5f8768d2425461737d77b83f888b525c06
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=mips

If you fix the issue, kindly add following tag as appropriate
Reported-by: kbuild test robot <lkp@intel.com>

All warnings (new ones prefixed by >>, old ones prefixed by <<):

>> sound/soc/jz4740/jz4740-i2s.c:465:34: warning: unused variable 'jz4740_i2s_soc_info' [-Wunused-const-variable]
static const struct i2s_soc_info jz4740_i2s_soc_info = {
^
>> sound/soc/jz4740/jz4740-i2s.c:488:34: warning: unused variable 'jz4780_i2s_soc_info' [-Wunused-const-variable]
static const struct i2s_soc_info jz4780_i2s_soc_info = {
^
2 warnings generated.

vim +/jz4740_i2s_soc_info +465 sound/soc/jz4740/jz4740-i2s.c

464
> 465 static const struct i2s_soc_info jz4740_i2s_soc_info = {
466 .version = JZ_I2S_JZ4740,
467 .dai = &jz4740_i2s_dai,
468 };
469
470 static struct snd_soc_dai_driver jz4780_i2s_dai = {
471 .probe = jz4740_i2s_dai_probe,
472 .remove = jz4740_i2s_dai_remove,
473 .playback = {
474 .channels_min = 1,
475 .channels_max = 2,
476 .rates = SNDRV_PCM_RATE_8000_48000,
477 .formats = JZ4740_I2S_FMTS,
478 },
479 .capture = {
480 .channels_min = 2,
481 .channels_max = 2,
482 .rates = SNDRV_PCM_RATE_8000_48000,
483 .formats = JZ4740_I2S_FMTS,
484 },
485 .ops = &jz4740_i2s_dai_ops,
486 };
487
> 488 static const struct i2s_soc_info jz4780_i2s_soc_info = {
489 .version = JZ_I2S_JZ4780,
490 .dai = &jz4780_i2s_dai,
491 };
492

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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