1 files changed, 5 insertions, 3 deletions

diff --git a/drivers/pci/intel-iommu.c b/drivers/pci/intel-iommu.c
index 65aa1d427f43..22ad8851b3e0 100644
--- a/drivers/pci/intel-iommu.c
+++ b/drivers/pci/intel-iommu.c
@@ -200,6 +200,9 @@ static inline bool dma_pte_present(struct dma_pte *pte)
         return (pte->val & 3) != 0;
 }
 
+/* devices under the same p2p bridge are owned in one domain */
+#define DOMAIN_FLAG_P2P_MULTIPLE_DEVICES (1 < 0)
+
 struct dmar_domain {
         int     id;                     /* domain id */
         struct intel_iommu *iommu;      /* back pointer to owning iommu */
@@ -214,8 +217,7 @@ struct dmar_domain {
         /* adjusted guest address width, 0 is level 2 30-bit */
         int             agaw;
 
-#define DOMAIN_FLAG_MULTIPLE_DEVICES 1
-        int             flags;
+        int             flags;          /* flags to find out type of domain */
 };
 
 /* PCI domain-device relationship */
@@ -1574,7 +1576,7 @@ static struct dmar_domain *get_domain_for_dev(struct pci_dev *pdev, int gaw)
                 info->dev = NULL;
                 info->domain = domain;
                 /* This domain is shared by devices under p2p bridge */
-                domain->flags |= DOMAIN_FLAG_MULTIPLE_DEVICES;
+                domain->flags |= DOMAIN_FLAG_P2P_MULTIPLE_DEVICES;
 
                 /* pcie-to-pci bridge already has a domain, uses it */
                 found = NULL;