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-rw-r--r--arch/ia64/kernel/pci-dma.c2
-rw-r--r--arch/ia64/kernel/pci-swiotlb.c2
2 files changed, 3 insertions, 1 deletions
diff --git a/arch/ia64/kernel/pci-dma.c b/arch/ia64/kernel/pci-dma.c
index 1376da45fd0..05695962fe4 100644
--- a/arch/ia64/kernel/pci-dma.c
+++ b/arch/ia64/kernel/pci-dma.c
@@ -32,6 +32,8 @@ int force_iommu __read_mostly = 1;
32int force_iommu __read_mostly; 32int force_iommu __read_mostly;
33#endif 33#endif
34 34
35int iommu_pass_through;
36
35/* Dummy device used for NULL arguments (normally ISA). Better would 37/* Dummy device used for NULL arguments (normally ISA). Better would
36 be probably a smaller DMA mask, but this is bug-to-bug compatible 38 be probably a smaller DMA mask, but this is bug-to-bug compatible
37 to i386. */ 39 to i386. */
diff --git a/arch/ia64/kernel/pci-swiotlb.c b/arch/ia64/kernel/pci-swiotlb.c
index 285aae8431c..223abb13410 100644
--- a/arch/ia64/kernel/pci-swiotlb.c
+++ b/arch/ia64/kernel/pci-swiotlb.c
@@ -46,7 +46,7 @@ void __init swiotlb_dma_init(void)
46 46
47void __init pci_swiotlb_init(void) 47void __init pci_swiotlb_init(void)
48{ 48{
49 if (!iommu_detected) { 49 if (!iommu_detected || iommu_pass_through) {
50#ifdef CONFIG_IA64_GENERIC 50#ifdef CONFIG_IA64_GENERIC
51 swiotlb = 1; 51 swiotlb = 1;
52 printk(KERN_INFO "PCI-DMA: Re-initialize machine vector.\n"); 52 printk(KERN_INFO "PCI-DMA: Re-initialize machine vector.\n");