diff options
| -rw-r--r-- | drivers/iommu/intel-iommu.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c index 710fc19a8ca1..41b74641f6c2 100644 --- a/drivers/iommu/intel-iommu.c +++ b/drivers/iommu/intel-iommu.c @@ -3572,10 +3572,15 @@ found: for (bus = dev->bus; bus; bus = bus->parent) { struct pci_dev *bridge = bus->self; - if (!bridge || !pci_is_pcie(bridge) || + /* If it's an integrated device, allow ATS */ + if (!bridge) + return 1; + /* Connected via non-PCIe: no ATS */ + if (!pci_is_pcie(bridge) || bridge->pcie_type == PCI_EXP_TYPE_PCI_BRIDGE) return 0; + /* If we found the root port, look it up in the ATSR */ if (bridge->pcie_type == PCI_EXP_TYPE_ROOT_PORT) { for (i = 0; i < atsru->devices_cnt; i++) if (atsru->devices[i] == bridge) |