Hi Andrea, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on linux/master] [also build test WARNING on linus/master v5.15-rc7] [cannot apply to jic23-iio/togreg next-20211029] [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/Andrea-Merello/utils_macro-introduce-find_closest_unsorted/20211028-191851 base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 2f111a6fd5b5297b4e92f53798ca086f7c7d33a4 config: alpha-randconfig-r014-20211029 (attached as .config) compiler: alpha-linux-gcc (GCC) 11.2.0 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 # https://github.com/0day-ci/linux/commit/fab64510c8234ae8acfbc853cc8c433ae831f7b3 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Andrea-Merello/utils_macro-introduce-find_closest_unsorted/20211028-191851 git checkout fab64510c8234ae8acfbc853cc8c433ae831f7b3 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=alpha If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot All warnings (new ones prefixed by >>): drivers/iio/imu/bno055/bno055.c:234:5: warning: no previous prototype for 'bno055_calibration_load' [-Wmissing-prototypes] 234 | int bno055_calibration_load(struct bno055_priv *priv, const struct firmware *fw) | ^~~~~~~~~~~~~~~~~~~~~~~ In file included from include/linux/printk.h:555, from include/linux/kernel.h:19, from include/linux/clk.h:13, from drivers/iio/imu/bno055/bno055.c:18: drivers/iio/imu/bno055/bno055.c: In function 'bno055_calibration_load': >> drivers/iio/imu/bno055/bno055.c:237:36: warning: format '%d' expects argument of type 'int', but argument 4 has type 'size_t' {aka 'long unsigned int'} [-Wformat=] 237 | dev_dbg(priv->dev, "Invalid calibration file size %d (expected %d)", | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/dynamic_debug.h:134:29: note: in definition of macro '__dynamic_func_call' 134 | func(&id, ##__VA_ARGS__); \ | ^~~~~~~~~~~ include/linux/dynamic_debug.h:166:9: note: in expansion of macro '_dynamic_func_call' 166 | _dynamic_func_call(fmt,__dynamic_dev_dbg, \ | ^~~~~~~~~~~~~~~~~~ include/linux/dev_printk.h:155:9: note: in expansion of macro 'dynamic_dev_dbg' 155 | dynamic_dev_dbg(dev, dev_fmt(fmt), ##__VA_ARGS__) | ^~~~~~~~~~~~~~~ include/linux/dev_printk.h:155:30: note: in expansion of macro 'dev_fmt' 155 | dynamic_dev_dbg(dev, dev_fmt(fmt), ##__VA_ARGS__) | ^~~~~~~ drivers/iio/imu/bno055/bno055.c:237:17: note: in expansion of macro 'dev_dbg' 237 | dev_dbg(priv->dev, "Invalid calibration file size %d (expected %d)", | ^~~~~~~ drivers/iio/imu/bno055/bno055.c:237:68: note: format string is defined here 237 | dev_dbg(priv->dev, "Invalid calibration file size %d (expected %d)", | ~^ | | | int | %ld drivers/iio/imu/bno055/bno055.c: In function 'bno055_fusion_enable_store': drivers/iio/imu/bno055/bno055.c:917:13: warning: variable 'ret' set but not used [-Wunused-but-set-variable] 917 | int ret = 0; | ^~~ drivers/iio/imu/bno055/bno055.c: At top level: drivers/iio/imu/bno055/bno055.c:1130:5: warning: no previous prototype for 'bno055_debugfs_reg_access' [-Wmissing-prototypes] 1130 | int bno055_debugfs_reg_access(struct iio_dev *iio_dev, unsigned int reg, | ^~~~~~~~~~~~~~~~~~~~~~~~~ drivers/iio/imu/bno055/bno055.c: In function 'bno055_trigger_handler': drivers/iio/imu/bno055/bno055.c:1330:9: error: implicit declaration of function 'for_each_set_bitrange'; did you mean 'for_each_set_bit'? [-Werror=implicit-function-declaration] 1330 | for_each_set_bitrange(start, end, iio_dev->active_scan_mask, | ^~~~~~~~~~~~~~~~~~~~~ | for_each_set_bit drivers/iio/imu/bno055/bno055.c:1331:51: error: expected ';' before '{' token 1331 | iio_dev->masklength) { | ^~ | ; drivers/iio/imu/bno055/bno055.c:1364:1: warning: label 'done' defined but not used [-Wunused-label] 1364 | done: | ^~~~ drivers/iio/imu/bno055/bno055.c:1327:13: warning: unused variable 'ret' [-Wunused-variable] 1327 | int ret; | ^~~ drivers/iio/imu/bno055/bno055.c:1326:13: warning: unused variable 'quat' [-Wunused-variable] 1326 | int quat; | ^~~~ drivers/iio/imu/bno055/bno055.c:1325:14: warning: unused variable 'thr_hit' [-Wunused-variable] 1325 | bool thr_hit; | ^~~~~~~ drivers/iio/imu/bno055/bno055.c:1324:13: warning: unused variable 'buf_idx' [-Wunused-variable] 1324 | int buf_idx = 0; | ^~~~~~~ drivers/iio/imu/bno055/bno055.c:1323:23: warning: unused variable 'mask' [-Wunused-variable] 1323 | unsigned long mask; | ^~~~ drivers/iio/imu/bno055/bno055.c:1322:14: warning: unused variable 'first' [-Wunused-variable] 1322 | bool first = true; | ^~~~~ drivers/iio/imu/bno055/bno055.c:1321:14: warning: unused variable 'xfer_pending' [-Wunused-variable] 1321 | bool xfer_pending = false; | ^~~~~~~~~~~~ drivers/iio/imu/bno055/bno055.c:1320:37: warning: unused variable 'prev_end' [-Wunused-variable] 1320 | int xfer_start, start, end, prev_end; | ^~~~~~~~ drivers/iio/imu/bno055/bno055.c:1320:13: warning: unused variable 'xfer_start' [-Wunused-variable] 1320 | int xfer_start, start, end, prev_end; | ^~~~~~~~~~ At top level: drivers/iio/imu/bno055/bno055.c:1262:12: warning: 'bno055_scan_xfer' defined but not used [-Wunused-function] 1262 | static int bno055_scan_xfer(struct bno055_priv *priv, | ^~~~~~~~~~~~~~~~ cc1: some warnings being treated as errors vim +237 drivers/iio/imu/bno055/bno055.c 734efd9783b7759 Andrea Merello 2021-10-28 232 734efd9783b7759 Andrea Merello 2021-10-28 233 /* must be called in configuration mode */ 734efd9783b7759 Andrea Merello 2021-10-28 @234 int bno055_calibration_load(struct bno055_priv *priv, const struct firmware *fw) 734efd9783b7759 Andrea Merello 2021-10-28 235 { 734efd9783b7759 Andrea Merello 2021-10-28 236 if (fw->size != BNO055_CALDATA_LEN) { 734efd9783b7759 Andrea Merello 2021-10-28 @237 dev_dbg(priv->dev, "Invalid calibration file size %d (expected %d)", 734efd9783b7759 Andrea Merello 2021-10-28 238 fw->size, BNO055_CALDATA_LEN); 734efd9783b7759 Andrea Merello 2021-10-28 239 return -EINVAL; 734efd9783b7759 Andrea Merello 2021-10-28 240 } 734efd9783b7759 Andrea Merello 2021-10-28 241 734efd9783b7759 Andrea Merello 2021-10-28 242 dev_dbg(priv->dev, "loading cal data: %*ph", BNO055_CALDATA_LEN, fw->data); 734efd9783b7759 Andrea Merello 2021-10-28 243 return regmap_bulk_write(priv->regmap, BNO055_CALDATA_START, 734efd9783b7759 Andrea Merello 2021-10-28 244 fw->data, BNO055_CALDATA_LEN); 734efd9783b7759 Andrea Merello 2021-10-28 245 } 734efd9783b7759 Andrea Merello 2021-10-28 246 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org