Hi Eliav, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on groeck-staging/hwmon-next] [also build test WARNING on linus/master v6.0-rc1 next-20220816] [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/Eliav-Farber/Variety-of-fixes-and-new-features-for-mr75203-driver/20220816-183655 base: https://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging.git hwmon-next config: powerpc-randconfig-s031-20220816 (https://download.01.org/0day-ci/archive/20220817/202208170228.YsVOxCg7-lkp@xxxxxxxxx/config) compiler: powerpc-linux-gcc (GCC) 12.1.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # apt-get install sparse # sparse version: v0.6.4-39-gce1a6720-dirty # https://github.com/intel-lab-lkp/linux/commit/75e49737eb6188733096da72eb4692cfed872101 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Eliav-Farber/Variety-of-fixes-and-new-features-for-mr75203-driver/20220816-183655 git checkout 75e49737eb6188733096da72eb4692cfed872101 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=powerpc SHELL=/bin/bash drivers/hwmon/ If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp@xxxxxxxxx> sparse warnings: (new ones prefixed by >>) >> drivers/hwmon/mr75203.c:604:27: sparse: sparse: Variable length array is used. drivers/hwmon/mr75203.c:605:33: sparse: sparse: Variable length array is used. vim +604 drivers/hwmon/mr75203.c 514 515 static int mr75203_probe(struct platform_device *pdev) 516 { 517 const struct hwmon_channel_info **pvt_info; 518 u32 ts_num, vm_num, pd_num, ch_num, val, index, i, j, k; 519 struct device *dev = &pdev->dev; 520 u32 *temp_config, *in_config; 521 struct device *hwmon_dev; 522 struct pvt_device *pvt; 523 int ret; 524 525 pvt = devm_kzalloc(dev, sizeof(*pvt), GFP_KERNEL); 526 if (!pvt) 527 return -ENOMEM; 528 529 ret = pvt_get_regmap(pdev, "common", pvt); 530 if (ret) 531 return ret; 532 533 pvt->clk = devm_clk_get(dev, NULL); 534 if (IS_ERR(pvt->clk)) 535 return dev_err_probe(dev, PTR_ERR(pvt->clk), "failed to get clock\n"); 536 537 ret = pvt_clk_enable(dev, pvt); 538 if (ret) { 539 dev_err(dev, "failed to enable clock\n"); 540 return ret; 541 } 542 543 if (of_property_read_bool(dev->of_node, "reset-control-skip")) { 544 dev_info(dev, "skipping reset-control\n"); 545 } else { 546 pvt->rst = devm_reset_control_get_exclusive(dev, NULL); 547 if (IS_ERR(pvt->rst)) 548 return dev_err_probe(dev, PTR_ERR(pvt->rst), 549 "failed to get reset control\n"); 550 551 ret = pvt_reset_control_deassert(dev, pvt); 552 if (ret) 553 return dev_err_probe(dev, ret, 554 "cannot deassert reset control\n"); 555 } 556 557 ret = regmap_read(pvt->c_map, PVT_IP_CONFIG, &val); 558 if(ret < 0) 559 return ret; 560 561 ts_num = (val & TS_NUM_MSK) >> TS_NUM_SFT; 562 pd_num = (val & PD_NUM_MSK) >> PD_NUM_SFT; 563 vm_num = (val & VM_NUM_MSK) >> VM_NUM_SFT; 564 ch_num = (val & CH_NUM_MSK) >> CH_NUM_SFT; 565 pvt->t_num = ts_num; 566 pvt->p_num = pd_num; 567 pvt->v_num = vm_num; 568 val = 0; 569 if (ts_num) 570 val++; 571 if (vm_num) 572 val++; 573 if (!val) 574 return -ENODEV; 575 576 pvt_info = devm_kcalloc(dev, val + 2, sizeof(*pvt_info), GFP_KERNEL); 577 if (!pvt_info) 578 return -ENOMEM; 579 pvt_info[0] = HWMON_CHANNEL_INFO(chip, HWMON_C_REGISTER_TZ); 580 index = 1; 581 582 if (ts_num) { 583 ret = pvt_get_regmap(pdev, "ts", pvt); 584 if (ret) 585 return ret; 586 587 temp_config = devm_kcalloc(dev, ts_num + 1, 588 sizeof(*temp_config), GFP_KERNEL); 589 if (!temp_config) 590 return -ENOMEM; 591 592 memset32(temp_config, HWMON_T_INPUT, ts_num); 593 pvt_temp.config = temp_config; 594 pvt_info[index++] = &pvt_temp; 595 } 596 597 if (pd_num) { 598 ret = pvt_get_regmap(pdev, "pd", pvt); 599 if (ret) 600 return ret; 601 } 602 603 if (vm_num) { > 604 u8 vm_idx[vm_num]; 605 u8 vm_active_ch[vm_num]; 606 607 ret = pvt_get_regmap(pdev, "vm", pvt); 608 if (ret) 609 return ret; 610 611 ret = device_property_read_u8_array(dev, "intel,vm-map", vm_idx, 612 vm_num); 613 if (ret) { 614 /* 615 * Incase intel,vm-map property is not defined, we 616 * assume incremental channel numbers. 617 */ 618 for (i = 0; i < vm_num; i++) 619 vm_idx[i] = i; 620 } else { 621 for (i = 0; i < vm_num; i++) 622 if (vm_idx[i] >= vm_num || vm_idx[i] == 0xff) 623 break; 624 625 vm_num = i; 626 pvt->v_num = i; 627 } 628 629 ret = device_property_read_u8_array(dev, "vm-active-channels", 630 vm_active_ch, vm_num); 631 if (ret) { 632 /* 633 * Incase vm-active-channels property is not defined, 634 * we assume each VM sensor has all of its channels 635 * active. 636 */ 637 for (i = 0; i < vm_num; i++) 638 vm_active_ch[i] = ch_num; 639 640 pvt->vm_ch_max = ch_num; 641 pvt->vm_ch_total = ch_num * vm_num; 642 } else { 643 for (i = 0; i < vm_num; i++) { 644 if (vm_active_ch[i] > ch_num) { 645 dev_err(dev, 646 "invalid active channels: %u\n", 647 vm_active_ch[i]); 648 return -EINVAL; 649 } 650 651 pvt->vm_ch_total += vm_active_ch[i]; 652 653 if (vm_active_ch[i] > pvt->vm_ch_max) 654 pvt->vm_ch_max = vm_active_ch[i]; 655 } 656 } 657 658 /* 659 * Map between the channel-number to VM-index and channel-index. 660 * Example - 3 VMs, vm_active_ch = [05 02 04]: 661 * vm_map = [0 0 0 0 0 1 1 2 2 2 2] 662 * ch_map = [0 1 2 3 4 0 1 0 1 2 3] 663 */ 664 pvt->vd = devm_kcalloc(dev, pvt->vm_ch_total, sizeof(*pvt->vd), 665 GFP_KERNEL); 666 if (!pvt->vd) 667 return -ENOMEM; 668 669 k = 0; 670 for (i = 0; i < vm_num; i++) 671 for (j = 0; j < vm_active_ch[i]; j++) { 672 pvt->vd[k].vm_map = vm_idx[i]; 673 pvt->vd[k].ch_map = j; 674 k++; 675 } 676 677 in_config = devm_kcalloc(dev, pvt->vm_ch_total + 1, 678 sizeof(*in_config), GFP_KERNEL); 679 if (!in_config) 680 return -ENOMEM; 681 682 memset32(in_config, HWMON_I_INPUT, pvt->vm_ch_total); 683 in_config[pvt->vm_ch_total] = 0; 684 pvt_in.config = in_config; 685 686 pvt_info[index++] = &pvt_in; 687 } 688 689 ret = pvt_init(pvt); 690 if (ret) { 691 dev_err(dev, "failed to init pvt: %d\n", ret); 692 return ret; 693 } 694 695 pvt_chip_info.info = pvt_info; 696 hwmon_dev = devm_hwmon_device_register_with_info(dev, "pvt", 697 pvt, 698 &pvt_chip_info, 699 NULL); 700 701 return PTR_ERR_OR_ZERO(hwmon_dev); 702 } 703 -- 0-DAY CI Kernel Test Service https://01.org/lkp
