Hi, kernel test robot noticed the following build warnings: [auto build test WARNING on robh/for-next] [also build test WARNING on pci/next pci/for-linus linus/master v6.16-rc7 next-20250725] [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/huaqian-li-siemens-com/dt-bindings-soc-ti-Add-AM65-peripheral-virtualization-unit/20250723-114915 base: https://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git for-next patch link: https://lore.kernel.org/r/20250723034521.138695-4-huaqian.li%40siemens.com patch subject: [PATCH v11 3/7] soc: ti: Add IOMMU-like PVU driver config: arm64-randconfig-r131-20250727 (https://download.01.org/0day-ci/archive/20250727/202507270850.rFyJ9cu3-lkp@xxxxxxxxx/config) compiler: clang version 22.0.0git (https://github.com/llvm/llvm-project 853c343b45b3e83cc5eeef5a52fc8cc9d8a09252) reproduce: (https://download.01.org/0day-ci/archive/20250727/202507270850.rFyJ9cu3-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202507270850.rFyJ9cu3-lkp@xxxxxxxxx/ sparse warnings: (new ones prefixed by >>) >> drivers/soc/ti/ti-pvu.c:422:44: sparse: sparse: Using plain integer as NULL pointer drivers/soc/ti/ti-pvu.c:422:47: sparse: sparse: Using plain integer as NULL pointer vim +422 drivers/soc/ti/ti-pvu.c 384 385 static int ti_pvu_probe(struct platform_device *pdev) 386 { 387 struct device *dev = &pdev->dev; 388 struct device_node *its_node; 389 void __iomem *base; 390 struct ti_pvu *pvu; 391 u32 val; 392 int ret; 393 394 pvu = devm_kzalloc(dev, sizeof(*pvu), GFP_KERNEL); 395 if (!pvu) 396 return -ENOMEM; 397 398 pvu->pdev = pdev; 399 400 base = devm_platform_ioremap_resource_byname(pdev, "cfg"); 401 if (IS_ERR(base)) 402 return PTR_ERR(base); 403 404 pvu->cfg = devm_regmap_init_mmio(dev, base, &pvu_cfg_regmap_cfg); 405 if (IS_ERR(pvu->cfg)) 406 return dev_err_probe(dev, PTR_ERR(pvu->cfg), "failed to init cfg regmap"); 407 408 ret = devm_regmap_field_bulk_alloc(dev, pvu->cfg, pvu->cfg_fields, 409 pvu_cfg_reg_fields, PVU_MAX_CFG_FIELDS); 410 if (ret) 411 return dev_err_probe(dev, ret, "failed to alloc cfg regmap fields"); 412 413 pvu->num_tlbs = pvu_field_read(pvu, PVU_TLBS); 414 pvu->num_entries = pvu_field_read(pvu, PVU_TLB_ENTRIES); 415 dev_info(dev, "TLBs: %d, entries per TLB: %d\n", pvu->num_tlbs, 416 pvu->num_entries); 417 418 pvu->tlbif_base = devm_platform_ioremap_resource_byname(pdev, "tlbif"); 419 if (IS_ERR(pvu->tlbif_base)) 420 return PTR_ERR(pvu->tlbif_base); 421 > 422 its_node = of_find_compatible_node(0, 0, "arm,gic-v3-its"); 423 if (its_node) { 424 u32 pre_its_window[2]; 425 426 ret = of_property_read_u32_array(its_node, 427 "socionext,synquacer-pre-its", 428 pre_its_window, 429 ARRAY_SIZE(pre_its_window)); 430 if (ret) { 431 dev_err(dev, "failed to read pre-its property\n"); 432 return ret; 433 } 434 435 ret = pvu_create_region(pvu, pre_its_window[0], 436 pre_its_window[1]); 437 if (ret) 438 return ret; 439 } 440 441 /* Enable the first two TLBs, chaining from 0 to 1 */ 442 val = readl(pvu->tlbif_base + PVU_CHAIN); 443 val |= PVU_CHAIN_EN | 1; 444 writel(val, pvu->tlbif_base + PVU_CHAIN); 445 446 val = readl(pvu->tlbif_base + PVU_CHAIN + 0x1000); 447 val |= PVU_CHAIN_EN; 448 writel(val, pvu->tlbif_base + PVU_CHAIN + 0x1000); 449 450 pvu_field_write(pvu, PVU_DMA_CNT, 0); 451 pvu_field_write(pvu, PVU_DMA_CL0, 0); 452 pvu_field_write(pvu, PVU_DMA_CL1, 0); 453 pvu_field_write(pvu, PVU_DMA_CL2, 0); 454 pvu_field_write(pvu, PVU_DMA_CL3, 0); 455 pvu_field_write(pvu, PVU_MAX_VIRTID, NUM_VIRTIDS); 456 457 ret = platform_get_irq(pdev, 0); 458 if (ret < 0) 459 return dev_err_probe(dev, ret, "failed to get irq\n"); 460 461 ret = devm_request_irq(dev, ret, pvu_fault_isr, 0, dev_name(dev), pvu); 462 if (ret) 463 return dev_err_probe(dev, ret, "failed to request irq\n"); 464 465 pvu_field_write(pvu, PVU_EXC_ENABLE, 1); 466 pvu_field_write(pvu, PVU_ENABLED, 1); 467 468 dev_set_drvdata(dev, pvu); 469 470 mutex_lock(&ti_pvu_lock); 471 list_add(&pvu->entry, &ti_pvu_list); 472 mutex_unlock(&ti_pvu_lock); 473 474 return 0; 475 } 476 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
