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path: root/drivers/pci/dmar.c
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-rw-r--r--drivers/pci/dmar.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/pci/dmar.c b/drivers/pci/dmar.c
index aba151ca6d2..23a119e6485 100644
--- a/drivers/pci/dmar.c
+++ b/drivers/pci/dmar.c
@@ -449,6 +449,22 @@ int __init early_dmar_detect(void)
return (ACPI_SUCCESS(status) ? 1 : 0);
}
+void __init detect_intel_iommu(void)
+{
+ int ret;
+
+ ret = early_dmar_detect();
+
+#ifdef CONFIG_DMAR
+ {
+ if (ret && !no_iommu && !iommu_detected && !swiotlb &&
+ !dmar_disabled)
+ iommu_detected = 1;
+ }
+#endif
+}
+
+
int alloc_iommu(struct dmar_drhd_unit *drhd)
{
struct intel_iommu *iommu;