Hi David, kernel test robot noticed the following build warnings: [auto build test WARNING on 5e99f692d4e32e3250ab18d511894ca797407aec] url: https://github.com/intel-lab-lkp/linux/commits/David-Lechner/dt-bindings-iio-resolver-add-devicetree-bindings-for-ad2s1210/20230930-014031 base: 5e99f692d4e32e3250ab18d511894ca797407aec patch link: https://lore.kernel.org/r/20230929-ad2s1210-mainline-v3-24-fa4364281745%40baylibre.com patch subject: [PATCH v3 24/27] staging: iio: resolver: ad2s1210: convert DOS mismatch threshold to event attr config: i386-randconfig-062-20231003 (https://download.01.org/0day-ci/archive/20231004/202310040309.rX4s31l7-lkp@xxxxxxxxx/config) compiler: gcc-12 (Debian 12.2.0-14) 12.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231004/202310040309.rX4s31l7-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202310040309.rX4s31l7-lkp@xxxxxxxxx/ sparse warnings: (new ones prefixed by >>) drivers/staging/iio/resolver/ad2s1210.c:901:1: sparse: sparse: symbol 'iio_const_attr_in_phase0_mag_value_available' was not declared. Should it be static? drivers/staging/iio/resolver/ad2s1210.c:906:1: sparse: sparse: symbol 'iio_const_attr_in_altvoltage0_thresh_falling_value_available' was not declared. Should it be static? drivers/staging/iio/resolver/ad2s1210.c:907:1: sparse: sparse: symbol 'iio_const_attr_in_altvoltage0_thresh_rising_value_available' was not declared. Should it be static? >> drivers/staging/iio/resolver/ad2s1210.c:908:1: sparse: sparse: symbol 'iio_const_attr_in_altvoltage0_mag_value_available' was not declared. Should it be static? drivers/staging/iio/resolver/ad2s1210.c:909:1: sparse: sparse: symbol 'iio_dev_attr_in_angl1_thresh_rising_value_available' was not declared. Should it be static? drivers/staging/iio/resolver/ad2s1210.c:910:1: sparse: sparse: symbol 'iio_dev_attr_in_angl1_thresh_rising_hysteresis_available' was not declared. Should it be static? -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki