tree: https://git.kernel.org/pub/scm/linux/kernel/git/sashal/linux-stable.git queue-4.9 head: aa9f1bc6b4d5d72c1f760e733b504a8a1bdd096f commit: 6d6b3333319ff8bd6bafa09b1b495bc5822d19c8 [41/55] iio:magnetometer:ak8974: Fix alignment and data leak issues config: x86_64-randconfig-s022-20200717 (attached as .config) compiler: gcc-7 (Ubuntu 7.5.0-6ubuntu2) 7.5.0 reproduce: # apt-get install sparse # sparse version: v0.6.2-49-g707c5017-dirty git checkout 6d6b3333319ff8bd6bafa09b1b495bc5822d19c8 # save the attached .config to linux build tree make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; sparse warnings: (new ones prefixed by >>) drivers/iio/magnetometer/ak8974.c:408:16: sparse: sparse: cast to restricted __le16 drivers/iio/magnetometer/ak8974.c:485:29: sparse: sparse: cast to restricted __le16 vim +511 drivers/iio/magnetometer/ak8974.c 497 498 static void ak8974_fill_buffer(struct iio_dev *indio_dev) 499 { 500 struct ak8974 *ak8974 = iio_priv(indio_dev); 501 int ret; 502 503 pm_runtime_get_sync(&ak8974->i2c->dev); 504 mutex_lock(&ak8974->lock); 505 506 ret = ak8974_trigmeas(ak8974); 507 if (ret) { 508 dev_err(&ak8974->i2c->dev, "error triggering measure\n"); 509 goto out_unlock; 510 } 512 if (ret) { 513 dev_err(&ak8974->i2c->dev, "error getting measures\n"); 514 goto out_unlock; 515 } 516 517 iio_push_to_buffers_with_timestamp(indio_dev, &ak8974->scan, 518 iio_get_time_ns(indio_dev)); 519 520 out_unlock: 521 mutex_unlock(&ak8974->lock); 522 pm_runtime_mark_last_busy(&ak8974->i2c->dev); 523 pm_runtime_put_autosuspend(&ak8974->i2c->dev); 524 } 525 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org