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Date: Wed, 17 Aug 2022 02:17:10 +0800
From: kernel test robot <lkp@...el.com>
To: Eliav Farber <farbere@...zon.com>, jdelvare@...e.com,
linux@...ck-us.net, robh+dt@...nel.org, mark.rutland@....com,
linux-hwmon@...r.kernel.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org
Cc: kbuild-all@...ts.01.org, farbere@...zon.com, talel@...zon.com,
hhhawa@...zon.com, jonnyc@...zon.com, hanochu@...zon.com,
ronenk@...zon.com, itamark@...zon.com, shellykz@...zon.com,
shorer@...zon.com, amitlavi@...zon.com, almogbs@...zon.com,
dwmw@...zon.co.uk, rtanwar@...linear.com
Subject: Re: [PATCH 08/16] hwmon: (mr75203) add VM active channel support
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@intel.com/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@...el.com>
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
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