tree: https://chromium.googlesource.com/chromiumos/third_party/kernel chromeos-4.4 head: 7254c60ea46ececa5041496f7907d0fcc582c1ae commit: 7c7d3263ef8b22d714decdbbaf463c66ce09c731 [13/14] BACKPORT: FROMGIT: media: cec: i2c: ch7322: Add ch7322 CEC controller driver config: nios2-randconfig-r024-20200707 (attached as .config) compiler: nios2-linux-gcc (GCC) 7.5.0 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 git checkout 7c7d3263ef8b22d714decdbbaf463c66ce09c731 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-7.5.0 make.cross ARCH=nios2 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): In file included from include/uapi/linux/stddef.h:1:0, from include/linux/stddef.h:4, from include/uapi/linux/posix_types.h:4, from include/uapi/linux/types.h:13, from include/linux/types.h:5, from include/uapi/linux/cec.h:39, from drivers/media/cec/i2c/ch7322.c:16: include/linux/scatterlist.h: In function 'sg_set_buf': arch/nios2/include/asm/page.h:90:33: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits] # define pfn_valid(pfn) ((pfn) >= ARCH_PFN_OFFSET && \ ^ include/linux/compiler.h:182:42: note: in definition of macro 'unlikely' # define unlikely(x) __builtin_expect(!!(x), 0) ^ include/linux/scatterlist.h:140:2: note: in expansion of macro 'BUG_ON' BUG_ON(!virt_addr_valid(buf)); ^~~~~~ arch/nios2/include/asm/page.h:94:33: note: in expansion of macro 'pfn_valid' # define virt_addr_valid(vaddr) pfn_valid(PFN_DOWN(virt_to_phys(vaddr))) ^~~~~~~~~ include/linux/scatterlist.h:140:10: note: in expansion of macro 'virt_addr_valid' BUG_ON(!virt_addr_valid(buf)); ^~~~~~~~~~~~~~~ drivers/media/cec/i2c/ch7322.c: In function 'ch7322_send_message': drivers/media/cec/i2c/ch7322.c:197:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 0; i < len; i++) { ^ drivers/media/cec/i2c/ch7322.c: In function 'ch7322_probe': ch7322->cec->notifier = notifier; ^~ vim +513 drivers/media/cec/i2c/ch7322.c 450 451 static int ch7322_probe(struct i2c_client *client) 452 { 453 struct device *hdmi_dev; 454 const char *port_name; 455 struct ch7322 *ch7322; 456 struct cec_notifier *notifier = NULL; 457 u32 caps = CEC_CAP_DEFAULTS; 458 int ret; 459 unsigned int val; 460 461 ret = ch7322_get_port(client, &hdmi_dev, &port_name); 462 if (ret) 463 return ret; 464 465 ch7322 = devm_kzalloc(&client->dev, sizeof(*ch7322), GFP_KERNEL); 466 if (!ch7322) 467 return -ENOMEM; 468 469 ch7322->regmap = devm_regmap_init_i2c(client, &ch7322_regmap); 470 if (IS_ERR(ch7322->regmap)) 471 return PTR_ERR(ch7322->regmap); 472 473 ret = regmap_read(ch7322->regmap, CH7322_DID, &val); 474 if (ret) 475 return ret; 476 477 if (val != CH7322_DID_CH7322) 478 return -EOPNOTSUPP; 479 480 mutex_init(&ch7322->mutex); 481 ch7322->i2c = client; 482 ch7322->tx_flags = 0; 483 484 i2c_set_clientdata(client, ch7322); 485 486 /* Disable auto mode */ 487 ret = regmap_write(ch7322->regmap, CH7322_MODE, CH7322_MODE_SW); 488 if (ret) 489 goto err_mutex; 490 491 /* Enable logical address register */ 492 ret = regmap_update_bits(ch7322->regmap, CH7322_CTL, 493 CH7322_CTL_SPADL, CH7322_CTL_SPADL); 494 if (ret) 495 goto err_mutex; 496 497 ch7322->cec = cec_allocate_adapter(&ch7322_cec_adap_ops, ch7322, 498 dev_name(&client->dev), 499 caps, 1); 500 501 if (IS_ERR(ch7322->cec)) { 502 ret = PTR_ERR(ch7322->cec); 503 goto err_mutex; 504 } 505 506 if (hdmi_dev) { 507 notifier = cec_notifier_get_conn(hdmi_dev, port_name); 508 if (!notifier) { 509 ret = -ENOMEM; 510 goto err_cec; 511 } 512 514 cec_notifier_register(notifier, ch7322->cec, ch7322_cec_notify); 515 } 516 517 /* Configure, mask, and clear interrupt */ 518 ret = regmap_write(ch7322->regmap, CH7322_CFG1, 0); 519 if (ret) 520 goto err_notifier; 521 ret = regmap_write(ch7322->regmap, CH7322_INTCTL, CH7322_INTCTL_INTPB); 522 if (ret) 523 goto err_notifier; 524 ret = regmap_write(ch7322->regmap, CH7322_INTDATA, 0xff); 525 if (ret) 526 goto err_notifier; 527 528 /* If HPD is up read physical address */ 529 ret = regmap_read(ch7322->regmap, CH7322_ADDLR, &val); 530 if (ret) 531 goto err_notifier; 532 if (val & CH7322_ADDLR_HPD) 533 ch7322_phys_addr(ch7322); 534 535 ret = devm_request_threaded_irq(&client->dev, client->irq, NULL, 536 ch7322_irq, 537 IRQF_ONESHOT | IRQF_TRIGGER_RISING, 538 client->name, ch7322); 539 if (ret) 540 goto err_notifier; 541 542 /* Unmask interrupt */ 543 mutex_lock(&ch7322->mutex); 544 ret = regmap_write(ch7322->regmap, CH7322_INTCTL, 0xff); 545 mutex_unlock(&ch7322->mutex); 546 547 if (ret) 548 goto err_notifier; 549 550 ret = cec_register_adapter(ch7322->cec, &client->dev); 551 if (ret) 552 goto err_notifier; 553 554 dev_info(&client->dev, "device registered\n"); 555 556 return 0; 557 558 err_notifier: 559 if (notifier) 560 cec_notifier_unregister(notifier); 561 err_cec: 562 cec_delete_adapter(ch7322->cec); 563 err_mutex: 564 mutex_destroy(&ch7322->mutex); 565 return ret; 566 } 567 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org