Hi Marc, Thank you for the patch! Yet something to improve: [auto build test ERROR on wsa/i2c/for-next] [also build test ERROR on v4.15-rc5 next-20171222] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-ci/linux/commits/Marc-CAPDEVILLE/i2c-core-acpi-Add-i2c_acpi_set_connection/20171226-083729 base: https://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux.git i2c/for-next config: i386-randconfig-c0-12261310 (attached as .config) compiler: gcc-7 (Debian 7.2.0-12) 7.2.1 20171025 reproduce: # save the attached .config to linux build tree make ARCH=i386 All errors (new ones prefixed by >>): drivers/iio/light/cm32181.o: In function `cm32181_irq': >> drivers/iio/light/cm32181.c:336: undefined reference to `i2c_smbus_alert_event' drivers/iio/light/cm32181.o: In function `cm32181_probe': >> drivers/iio/light/cm32181.c:405: undefined reference to `i2c_require_smbus_alert' drivers/iio/light/cm32181.o: In function `cm32181_reg_init': drivers/iio/light/cm32181.c:95: undefined reference to `i2c_smbus_alert_event' vim +336 drivers/iio/light/cm32181.c 329 330 static irqreturn_t cm32181_irq(int irq, void *d) 331 { 332 struct cm32181_chip *cm32181 = d; 333 334 if (cm32181->chip_id == CM3218_ID) { 335 /* This is cm3218 chip irq, so handle the smbus alert */ > 336 i2c_smbus_alert_event(cm32181->client); 337 } 338 339 return IRQ_HANDLED; 340 } 341 342 static int cm32181_probe(struct i2c_client *client, 343 const struct i2c_device_id *id) 344 { 345 struct cm32181_chip *cm32181; 346 struct iio_dev *indio_dev; 347 int ret; 348 const struct of_device_id *of_id; 349 const struct acpi_device_id *acpi_id; 350 351 indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*cm32181)); 352 if (!indio_dev) { 353 dev_err(&client->dev, "devm_iio_device_alloc failed\n"); 354 return -ENOMEM; 355 } 356 357 cm32181 = iio_priv(indio_dev); 358 i2c_set_clientdata(client, indio_dev); 359 cm32181->client = client; 360 361 mutex_init(&cm32181->lock); 362 indio_dev->dev.parent = &client->dev; 363 indio_dev->channels = cm32181_channels; 364 indio_dev->num_channels = ARRAY_SIZE(cm32181_channels); 365 indio_dev->info = &cm32181_info; 366 indio_dev->name = id->name; 367 indio_dev->modes = INDIO_DIRECT_MODE; 368 369 /* Lookup for chip ID from platform, acpi or of device table */ 370 if (id) { 371 cm32181->chip_id = id->driver_data; 372 } else if (ACPI_COMPANION(&client->dev)) { 373 acpi_id = acpi_match_device(client->dev.driver->acpi_match_table, 374 &client->dev); 375 if (!acpi_id) 376 return -ENODEV; 377 378 cm32181->chip_id = (kernel_ulong_t)acpi_id->driver_data; 379 } else if (client->dev.of_node) { 380 of_id = of_match_device(client->dev.driver->of_match_table, 381 &client->dev); 382 if (!of_id) 383 return -ENODEV; 384 385 cm32181->chip_id = (kernel_ulong_t)of_id->data; 386 } else { 387 return -ENODEV; 388 } 389 390 if (cm32181->chip_id == CM3218_ID) { 391 if (ACPI_COMPANION(&client->dev) && 392 client->addr == SMBUS_ARA_ADDR) { 393 /* 394 * In case this device as been enumerated by acpi 395 * with the reserved smbus ARA address (first acpi 396 * connection), request change of address to the second 397 * connection. 398 */ 399 ret = i2c_acpi_set_connection(client, 1); 400 if (ret) 401 return ret; 402 } 403 404 /* cm3218 chip require an ara device on his adapter */ > 405 ret = i2c_require_smbus_alert(client); 406 if (ret < 0) 407 return ret; 408 409 /* 410 * If irq is given, request a threaded irq handler to manage 411 * smbus alert. 412 */ 413 if (client->irq > 0) { 414 ret = devm_request_threaded_irq(&client->dev, 415 client->irq, 416 NULL, cm32181_irq, 417 IRQF_ONESHOT, 418 "cm32181", cm32181); 419 if (ret) 420 return ret; 421 } 422 } 423 424 ret = cm32181_reg_init(cm32181); 425 if (ret) { 426 dev_err(&client->dev, 427 "%s: register init failed\n", 428 __func__); 429 return ret; 430 } 431 432 ret = devm_iio_device_register(&client->dev, indio_dev); 433 if (ret) { 434 dev_err(&client->dev, 435 "%s: regist device failed\n", 436 __func__); 437 return ret; 438 } 439 440 return 0; 441 } 442 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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