Hi Eddie, FYI, the error/warning still remains. tree: https://github.com/shenki/linux ftgmac100-fixes head: a9f71f82b86f334b0670285bc569dc41d2c16020 commit: 0f099b795d61ec929a685d444cc2566f57ac081f [120/182] fsi: occ: Add support for P10 config: arm64-randconfig-r022-20201019 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project 094e9f4779eb9b5c6a49014f2f80b8cbb833572f) 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 # install arm64 cross compiling tool for clang build # apt-get install binutils-aarch64-linux-gnu # https://github.com/shenki/linux/commit/0f099b795d61ec929a685d444cc2566f57... git remote add shenki https://github.com/shenki/linux git fetch --no-tags shenki ftgmac100-fixes git checkout 0f099b795d61ec929a685d444cc2566f57ac081f # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): occ->version = (enum versions)md; ^~~~~~~~~~~~~~~~~ 1 warning generated. vim +570 drivers/fsi/fsi-occ.c 552 553 static int occ_probe(struct platform_device *pdev) 554 { 555 int rc; 556 u32 reg; 557 struct occ *occ; 558 struct platform_device *hwmon_dev; 559 struct device *dev = &pdev->dev; 560 const void *md = of_device_get_match_data(dev); 561 struct platform_device_info hwmon_dev_info = { 562 .parent = dev, 563 .name = "occ-hwmon", 564 }; 565 566 occ = devm_kzalloc(dev, sizeof(*occ), GFP_KERNEL); 567 if (!occ) 568 return -ENOMEM; 569 571 occ->dev = dev; 572 occ->sbefifo = dev->parent; 573 mutex_init(&occ->occ_lock); 574 575 if (dev->of_node) { 576 rc = of_property_read_u32(dev->of_node, "reg", &reg); 577 if (!rc) { 578 /* make sure we don't have a duplicate from dts */ 579 occ->idx = ida_simple_get(&occ_ida, reg, reg + 1, 580 GFP_KERNEL); 581 if (occ->idx < 0) 582 occ->idx = ida_simple_get(&occ_ida, 1, INT_MAX, 583 GFP_KERNEL); 584 } else { 585 occ->idx = ida_simple_get(&occ_ida, 1, INT_MAX, 586 GFP_KERNEL); 587 } 588 } else { 589 occ->idx = ida_simple_get(&occ_ida, 1, INT_MAX, GFP_KERNEL); 590 } 591 592 platform_set_drvdata(pdev, occ); 593 594 snprintf(occ->name, sizeof(occ->name), "occ%d", occ->idx); 595 occ->mdev.fops = &occ_fops; 596 occ->mdev.minor = MISC_DYNAMIC_MINOR; 597 occ->mdev.name = occ->name; 598 occ->mdev.parent = dev; 599 600 rc = misc_register(&occ->mdev); 601 if (rc) { 602 dev_err(dev, "failed to register miscdevice: %d\n", rc); 603 ida_simple_remove(&occ_ida, occ->idx); 604 return rc; 605 } 606 607 hwmon_dev_info.id = occ->idx; 608 hwmon_dev = platform_device_register_full(&hwmon_dev_info); 609 if (IS_ERR(hwmon_dev)) 610 dev_warn(dev, "failed to create hwmon device\n"); 611 612 return 0; 613 } 614 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org