Hi Wentong, kernel test robot noticed the following build errors: [auto build test ERROR on wsa/i2c/for-next] [also build test ERROR on broonie-spi/for-next linus/master v6.5 next-20230831] [cannot apply to usb/usb-testing usb/usb-next usb/usb-linus] [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/Wentong-Wu/usb-Add-support-for-Intel-LJCA-device/20230904-112200 base: https://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux.git i2c/for-next patch link: https://lore.kernel.org/r/1693797462-4833-3-git-send-email-wentong.wu%40intel.com patch subject: [PATCH v13 2/4] i2c: Add support for Intel LJCA USB I2C driver config: sparc-allmodconfig (https://download.01.org/0day-ci/archive/20230904/202309041328.xzeaJFiO-lkp@xxxxxxxxx/config) compiler: sparc64-linux-gcc (GCC) 13.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20230904/202309041328.xzeaJFiO-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/202309041328.xzeaJFiO-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): drivers/i2c/busses/i2c-ljca.c: In function 'ljca_i2c_probe': >> drivers/i2c/busses/i2c-ljca.c:311:17: error: implicit declaration of function 'acpi_dev_clear_dependencies' [-Werror=implicit-function-declaration] 311 | acpi_dev_clear_dependencies(ACPI_COMPANION(&ljca_i2c->adap.dev)); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~ cc1: some warnings being treated as errors vim +/acpi_dev_clear_dependencies +311 drivers/i2c/busses/i2c-ljca.c 270 271 static int ljca_i2c_probe(struct auxiliary_device *auxdev, 272 const struct auxiliary_device_id *aux_dev_id) 273 { 274 struct ljca_client *ljca = auxiliary_dev_to_ljca_client(auxdev); 275 struct ljca_i2c_dev *ljca_i2c; 276 int ret; 277 278 ljca_i2c = devm_kzalloc(&auxdev->dev, sizeof(*ljca_i2c), GFP_KERNEL); 279 if (!ljca_i2c) 280 return -ENOMEM; 281 282 ljca_i2c->ljca = ljca; 283 ljca_i2c->i2c_info = dev_get_platdata(&auxdev->dev); 284 285 ljca_i2c->adap.owner = THIS_MODULE; 286 ljca_i2c->adap.class = I2C_CLASS_HWMON; 287 ljca_i2c->adap.algo = &ljca_i2c_algo; 288 ljca_i2c->adap.quirks = &ljca_i2c_quirks; 289 ljca_i2c->adap.dev.parent = &auxdev->dev; 290 291 snprintf(ljca_i2c->adap.name, sizeof(ljca_i2c->adap.name), "%s-%s-%d", 292 dev_name(&auxdev->dev), dev_name(auxdev->dev.parent), 293 ljca_i2c->i2c_info->id); 294 295 device_set_node(&ljca_i2c->adap.dev, dev_fwnode(&auxdev->dev)); 296 297 i2c_set_adapdata(&ljca_i2c->adap, ljca_i2c); 298 auxiliary_set_drvdata(auxdev, ljca_i2c); 299 300 ret = ljca_i2c_init(ljca_i2c, ljca_i2c->i2c_info->id); 301 if (ret) 302 return dev_err_probe(&auxdev->dev, -EIO, 303 "i2c init failed id: %d\n", 304 ljca_i2c->i2c_info->id); 305 306 ret = devm_i2c_add_adapter(&auxdev->dev, &ljca_i2c->adap); 307 if (ret) 308 return ret; 309 310 if (has_acpi_companion(&ljca_i2c->adap.dev)) > 311 acpi_dev_clear_dependencies(ACPI_COMPANION(&ljca_i2c->adap.dev)); 312 313 return 0; 314 } 315 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki