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Subjectsound/soc/codecs/jz4770.c:930:34: warning: unused variable 'jz4770_codec_of_matches'
tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 4286d192c803571e8ca43b0f1f8ea04d663a278a
commit: 2159a6810e96c38a469c39df8e109edb7232d3c9 ASoC: codecs: Add jz4770-codec driver
date: 4 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 2159a6810e96c38a469c39df8e109edb7232d3c9
# 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/codecs/jz4770.c:306:35: warning: unused variable 'mic_boost_tlv' [-Wunused-const-variable]
static const DECLARE_TLV_DB_SCALE(mic_boost_tlv, 0, 400, 0);
^
include/sound/tlv.h:22:31: note: expanded from macro 'DECLARE_TLV_DB_SCALE'
#define DECLARE_TLV_DB_SCALE SNDRV_CTL_TLVD_DECLARE_DB_SCALE
^
>> sound/soc/codecs/jz4770.c:930:34: warning: unused variable 'jz4770_codec_of_matches' [-Wunused-const-variable]
static const struct of_device_id jz4770_codec_of_matches[] = {
^
2 warnings generated.

vim +/jz4770_codec_of_matches +930 sound/soc/codecs/jz4770.c

929
> 930 static const struct of_device_id jz4770_codec_of_matches[] = {
931 { .compatible = "ingenic,jz4770-codec", },
932 { /* sentinel */ }
933 };
934 MODULE_DEVICE_TABLE(of, jz4770_codec_of_matches);
935

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