1 files changed, 3 insertions, 1 deletions

diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c
index fa044e1e30a..679b6450382 100644
--- a/arch/x86/kernel/amd_iommu.c
+++ b/arch/x86/kernel/amd_iommu.c
@@ -1953,6 +1953,7 @@ static void __unmap_single(struct dma_ops_domain *dma_dom,
                            size_t size,
                            int dir)
 {
+        dma_addr_t flush_addr;
         dma_addr_t i, start;
         unsigned int pages;
 
@@ -1960,6 +1961,7 @@ static void __unmap_single(struct dma_ops_domain *dma_dom,
             (dma_addr + size > dma_dom->aperture_size))
                 return;
 
+        flush_addr = dma_addr;
         pages = iommu_num_pages(dma_addr, size, PAGE_SIZE);
         dma_addr &= PAGE_MASK;
         start = dma_addr;
@@ -1974,7 +1976,7 @@ static void __unmap_single(struct dma_ops_domain *dma_dom,
         dma_ops_free_addresses(dma_dom, dma_addr, pages);
 
         if (amd_iommu_unmap_flush || dma_dom->need_flush) {
-                iommu_flush_pages(&dma_dom->domain, dma_addr, size);
+                iommu_flush_pages(&dma_dom->domain, flush_addr, size);
                 dma_dom->need_flush = false;
         }
 }