1 files changed, 6 insertions, 0 deletions

diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
index 4e04fff23977..73e47d93e7a0 100644
--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -246,7 +246,13 @@ static u16 get_alias(struct device *dev)
 
         /* The callers make sure that get_device_id() does not fail here */
         devid = get_device_id(dev);
+
+        /* For ACPI HID devices, we simply return the devid as such */
+        if (!dev_is_pci(dev))
+                return devid;
+
         ivrs_alias = amd_iommu_alias_table[devid];
+
         pci_for_each_dma_alias(pdev, __last_alias, &pci_alias);
 
         if (ivrs_alias == pci_alias)