1 files changed, 1 insertions, 1 deletions

diff --git a/arch/x86/kernel/amd_iommu_init.c b/arch/x86/kernel/amd_iommu_init.c
index 2a13e430437d..bb0280077a32 100644
--- a/arch/x86/kernel/amd_iommu_init.c
+++ b/arch/x86/kernel/amd_iommu_init.c
@@ -828,7 +828,7 @@ static int __init early_amd_iommu_detect(struct acpi_table_header *table)
 
 void __init amd_iommu_detect(void)
 {
-        if (swiotlb || no_iommu || iommu_detected)
+        if (swiotlb || no_iommu || (iommu_detected && !gart_iommu_aperture))
                 return;
 
         if (acpi_table_parse("IVRS", early_amd_iommu_detect) == 0) {