Hi Esteban, kernel test robot noticed the following build warnings: [auto build test WARNING on ffd294d346d185b70e28b1a28abe367bbfe53c04] url: https://github.com/intel-lab-lkp/linux/commits/Esteban-Blanc/dt-bindings-iio-adc-add-ADI-ad4030-ad4630-and-ad4632/20250130-191153 base: ffd294d346d185b70e28b1a28abe367bbfe53c04 patch link: https://lore.kernel.org/r/20250130-eblanc-ad4630_v1-v3-2-052e8c2d897d%40baylibre.com patch subject: [PATCH v3 2/6] iio: adc: ad4030: add driver for ad4030-24 config: sh-allmodconfig (https://download.01.org/0day-ci/archive/20250131/202501311345.Oh77Bhyw-lkp@xxxxxxxxx/config) compiler: sh4-linux-gcc (GCC) 14.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250131/202501311345.Oh77Bhyw-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/202501311345.Oh77Bhyw-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): drivers/iio/adc/ad4030.c: In function 'ad4030_buffer_preenable': >> drivers/iio/adc/ad4030.c:715:30: warning: unused variable 'st' [-Wunused-variable] 715 | struct ad4030_state *st = iio_priv(indio_dev); | ^~ vim +/st +715 drivers/iio/adc/ad4030.c 712 713 static int ad4030_buffer_preenable(struct iio_dev *indio_dev) 714 { > 715 struct ad4030_state *st = iio_priv(indio_dev); 716 int ret; 717 718 ret = ad4030_set_mode(indio_dev, *indio_dev->active_scan_mask); 719 if (ret) 720 return ret; 721 722 return 0; 723 } 724 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki