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-rw-r--r--arch/x86/kernel/pci-dma.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c
index afcc58b69c7..fcc2f2bfa39 100644
--- a/arch/x86/kernel/pci-dma.c
+++ b/arch/x86/kernel/pci-dma.c
@@ -120,11 +120,14 @@ static void __init dma32_free_bootmem(void)
void __init pci_iommu_alloc(void)
{
+ int use_swiotlb;
+
+ use_swiotlb = pci_swiotlb_init();
#ifdef CONFIG_X86_64
/* free the range so iommu could get some range less than 4G */
dma32_free_bootmem();
#endif
- if (pci_swiotlb_init())
+ if (use_swiotlb)
return;
gart_iommu_hole_init();