Hi Ethan, kernel test robot noticed the following build warnings: url: https://github.com/intel-lab-lkp/linux/commits/Ethan-Zhao/PCI-make-pci_dev_is_disconnected-helper-public-for-other-drivers/20240129-115259 base: 41bccc98fb7931d63d03f326a746ac4d429c1dd3 patch link: https://lore.kernel.org/r/20240129034924.817005-5-haifeng.zhao%40linux.intel.com patch subject: [PATCH v12 4/5] iommu/vt-d: pass pdev parameter for qi_check_fault() and refactor callers config: x86_64-randconfig-161-20240207 (https://download.01.org/0day-ci/archive/20240208/202402080321.n77hu71Y-lkp@xxxxxxxxx/config) compiler: gcc-12 (Debian 12.2.0-14) 12.2.0 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> | Reported-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx> | Closes: https://lore.kernel.org/r/202402080321.n77hu71Y-lkp@xxxxxxxxx/ smatch warnings: drivers/iommu/intel/dmar.c:1533 qi_flush_dev_iotlb() error: we previously assumed 'info->dev' could be null (see line 1533) vim +1533 drivers/iommu/intel/dmar.c 20da7293134024 drivers/iommu/intel/dmar.c Ethan Zhao 2024-01-28 1522 void qi_flush_dev_iotlb(struct intel_iommu *iommu, 20da7293134024 drivers/iommu/intel/dmar.c Ethan Zhao 2024-01-28 1523 struct device_domain_info *info, u64 addr, 20da7293134024 drivers/iommu/intel/dmar.c Ethan Zhao 2024-01-28 1524 unsigned int mask) 6ba6c3a4cacfd6 drivers/pci/dmar.c Yu Zhao 2009-05-18 1525 { c830e699e08a6c drivers/iommu/intel/dmar.c Ethan Zhao 2024-01-28 1526 struct pci_dev *pdev = NULL; 20da7293134024 drivers/iommu/intel/dmar.c Ethan Zhao 2024-01-28 1527 u16 sid, qdep, pfsid; 6ba6c3a4cacfd6 drivers/pci/dmar.c Yu Zhao 2009-05-18 1528 struct qi_desc desc; 6ba6c3a4cacfd6 drivers/pci/dmar.c Yu Zhao 2009-05-18 1529 20da7293134024 drivers/iommu/intel/dmar.c Ethan Zhao 2024-01-28 1530 if (!info || !info->ats_enabled) 20da7293134024 drivers/iommu/intel/dmar.c Ethan Zhao 2024-01-28 1531 return; 20da7293134024 drivers/iommu/intel/dmar.c Ethan Zhao 2024-01-28 1532 c830e699e08a6c drivers/iommu/intel/dmar.c Ethan Zhao 2024-01-28 @1533 if (info->dev || !dev_is_pci(info->dev)) Missing ! character. if (!info->dev c830e699e08a6c drivers/iommu/intel/dmar.c Ethan Zhao 2024-01-28 1534 return; c830e699e08a6c drivers/iommu/intel/dmar.c Ethan Zhao 2024-01-28 1535 c830e699e08a6c drivers/iommu/intel/dmar.c Ethan Zhao 2024-01-28 1536 pdev = to_pci_dev(info->dev); 20da7293134024 drivers/iommu/intel/dmar.c Ethan Zhao 2024-01-28 1537 sid = info->bus << 8 | info->devfn; 20da7293134024 drivers/iommu/intel/dmar.c Ethan Zhao 2024-01-28 1538 qdep = info->ats_qdep; 20da7293134024 drivers/iommu/intel/dmar.c Ethan Zhao 2024-01-28 1539 pfsid = info->pfsid; -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
