1 files changed, 8 insertions, 0 deletions

diff --git a/drivers/pci/intr_remapping.c b/drivers/pci/intr_remapping.c
index 44803644ca0..0ed78a764de 100644
--- a/drivers/pci/intr_remapping.c
+++ b/drivers/pci/intr_remapping.c
@@ -603,6 +603,9 @@ int __init intr_remapping_supported(void)
         if (disable_intremap)
                 return 0;
 
+        if (!dmar_ir_support())
+                return 0;
+
         for_each_drhd_unit(drhd) {
                 struct intel_iommu *iommu = drhd->iommu;
 
@@ -618,6 +621,11 @@ int __init enable_intr_remapping(int eim)
         struct dmar_drhd_unit *drhd;
         int setup = 0;
 
+        if (parse_ioapics_under_ir() != 1) {
+                printk(KERN_INFO "Not enable interrupt remapping\n");
+                return -1;
+        }
+
         for_each_drhd_unit(drhd) {
                 struct intel_iommu *iommu = drhd->iommu;