Hi Kai-Heng, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on jic23-iio/togreg] [also build test WARNING on v5.16-rc7 next-20211224] [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/Kai-Heng-Feng/iio-humidity-hdc100x-Add-ACPI-HID-table/20211224-230046 base: https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git togreg config: mips-randconfig-c004-20211227 (https://download.01.org/0day-ci/archive/20211227/202112271213.Z6jyi5YK-lkp@xxxxxxxxx/config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 511726c64d3b6cca66f7c54d457d586aa3129f67) 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 # https://github.com/0day-ci/linux/commit/59648fe59d706ab2b9e719418c490d505ee5cc93 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Kai-Heng-Feng/iio-humidity-hdc100x-Add-ACPI-HID-table/20211224-230046 git checkout 59648fe59d706ab2b9e719418c490d505ee5cc93 # 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=mips SHELL=/bin/bash drivers/iio/humidity/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): >> drivers/iio/humidity/hdc100x.c:420:36: warning: unused variable 'hdc100x_acpi_match' [-Wunused-const-variable] static const struct acpi_device_id hdc100x_acpi_match[] = { ^ 1 warning generated. vim +/hdc100x_acpi_match +420 drivers/iio/humidity/hdc100x.c 419 > 420 static const struct acpi_device_id hdc100x_acpi_match[] = { 421 {"HDC1010"}, 422 { }, 423 }; 424 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
