[kbuild-all] drivers/iio/accel/bma400_i2c.c:21: undefined reference to `__devm_regmap_init_i2c'

Hi Dave, It's probably a bug fix that unveils the link errors. tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 642b151f45dd54809ea00ecd3976a56c1ec9b53d commit: 7ebdc26a315ac0f13369eaf922bcee3ede576438 Merge tag 'drm-misc-next-fixes-2020-02-07' of git://anongit.freedesktop.org/drm/drm-misc into drm-fixes date: 3 months ago config: arm64-randconfig-r024-20200518 (attached as .config) compiler: aarch64-linux-gcc (GCC) 9.3.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout 7ebdc26a315ac0f13369eaf922bcee3ede576438 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm64 If you fix the issue, kindly add following tag as appropriate Reported-by: kbuild test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>, old ones prefixed by <<): aarch64-linux-ld: drivers/iio/accel/bma400_i2c.o: in function `bma400_i2c_probe': vim +21 drivers/iio/accel/bma400_i2c.c 465c811f1f201a Dan Robertson 2019-12-20 15 465c811f1f201a Dan Robertson 2019-12-20 16 static int bma400_i2c_probe(struct i2c_client *client, 465c811f1f201a Dan Robertson 2019-12-20 17 const struct i2c_device_id *id) 465c811f1f201a Dan Robertson 2019-12-20 18 { 465c811f1f201a Dan Robertson 2019-12-20 19 struct regmap *regmap; 465c811f1f201a Dan Robertson 2019-12-20 20 465c811f1f201a Dan Robertson 2019-12-20 @21 regmap = devm_regmap_init_i2c(client, &bma400_regmap_config); 465c811f1f201a Dan Robertson 2019-12-20 22 if (IS_ERR(regmap)) { 465c811f1f201a Dan Robertson 2019-12-20 23 dev_err(&client->dev, "failed to create regmap\n"); 465c811f1f201a Dan Robertson 2019-12-20 24 return PTR_ERR(regmap); 465c811f1f201a Dan Robertson 2019-12-20 25 } 465c811f1f201a Dan Robertson 2019-12-20 26 465c811f1f201a Dan Robertson 2019-12-20 27 return bma400_probe(&client->dev, regmap, id->name); 465c811f1f201a Dan Robertson 2019-12-20 28 } 465c811f1f201a Dan Robertson 2019-12-20 29 :::::: The code at line 21 was first introduced by commit :::::: 465c811f1f201a7554a95cf003bc06a239606e9b iio: accel: Add driver for the BMA400 :::::: TO: Dan Robertson <dan(a)dlrobertson.com&gt; :::::: CC: Jonathan Cameron <Jonathan.Cameron(a)huawei.com&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org