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-rw-r--r--drivers/pci/intel-iommu.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/pci/intel-iommu.c b/drivers/pci/intel-iommu.c
index 5cbab7f19ae0..7f757ce60c5a 100644
--- a/drivers/pci/intel-iommu.c
+++ b/drivers/pci/intel-iommu.c
@@ -46,6 +46,8 @@
#define ROOT_SIZE VTD_PAGE_SIZE
#define CONTEXT_SIZE VTD_PAGE_SIZE
+#define IS_BRIDGE_HOST_DEVICE(pdev) \
+ ((pdev->class >> 8) == PCI_CLASS_BRIDGE_HOST)
#define IS_GFX_DEVICE(pdev) ((pdev->class >> 16) == PCI_BASE_CLASS_DISPLAY)
#define IS_ISA_DEVICE(pdev) ((pdev->class >> 8) == PCI_CLASS_BRIDGE_ISA)
#define IS_AZALIA(pdev) ((pdev)->vendor == 0x8086 && (pdev)->device == 0x3a3e)
@@ -2343,6 +2345,9 @@ static int __init iommu_prepare_static_identity_mapping(int hw)
return -EFAULT;
for_each_pci_dev(pdev) {
+ /* Skip Host/PCI Bridge devices */
+ if (IS_BRIDGE_HOST_DEVICE(pdev))
+ continue;
if (iommu_should_identity_map(pdev, 1)) {
printk(KERN_INFO "IOMMU: %s identity mapping for device %s\n",
hw ? "hardware" : "software", pci_name(pdev));