Hi Lothar, kernel test robot noticed the following build warnings: [auto build test WARNING on jic23-iio/togreg] [also build test WARNING on linus/master v6.12-rc7 next-20241115] [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#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Lothar-Rubusch/iio-accel-adxl345-fix-comment-on-probe/20241115-190245 base: https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git togreg patch link: https://lore.kernel.org/r/20241114231002.98595-16-l.rubusch%40gmail.com patch subject: [PATCH 15/22] iio: accel: adxl345: reset the FIFO on error config: arc-randconfig-r052-20241117 (https://download.01.org/0day-ci/archive/20241117/202411170855.sbBnXXo4-lkp@xxxxxxxxx/config) compiler: arc-elf-gcc (GCC) 13.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241117/202411170855.sbBnXXo4-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/202411170855.sbBnXXo4-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): >> drivers/iio/accel/adxl345_core.c:383:6: warning: no previous prototype for 'adxl345_empty_fifo' [-Wmissing-prototypes] 383 | void adxl345_empty_fifo(struct adxl34x_state *st) | ^~~~~~~~~~~~~~~~~~ vim +/adxl345_empty_fifo +383 drivers/iio/accel/adxl345_core.c 376 377 /** 378 * Empty the fifo. This is needed also in case of overflow or error handling. 379 * Read out all remaining elements and reset the fifo_entries counter. 380 * 381 * @st: The instance to the state object of the sensor. 382 */ > 383 void adxl345_empty_fifo(struct adxl34x_state *st) 384 { 385 int regval; 386 int fifo_entries; 387 388 /* In case the HW is not "clean" just read out remaining elements */ 389 adxl345_get_fifo_entries(st, &fifo_entries); 390 if (fifo_entries > 0) 391 adxl345_read_fifo_elements(st, fifo_entries); 392 393 /* Reset the INT_SOURCE register by reading the register */ 394 regmap_read(st->regmap, ADXL345_REG_INT_SOURCE, ®val); 395 } 396 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
