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-rw-r--r--drivers/iommu/amd_iommu.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
index e29baa6c64e3..fa9508bb76dd 100644
--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -2853,6 +2853,15 @@ int __init amd_iommu_init_dma_ops(void)
swiotlb = iommu_pass_through ? 1 : 0;
iommu_detected = 1;
+ /*
+ * In case we don't initialize SWIOTLB (actually the common case
+ * when AMD IOMMU is enabled), make sure there are global
+ * dma_ops set as a fall-back for devices not handled by this
+ * driver (for example non-PCI devices).
+ */
+ if (!swiotlb)
+ dma_ops = &nommu_dma_ops;
+
amd_iommu_stats_init();
if (amd_iommu_unmap_flush)