Signed-off-by: Yijing Wang <[email protected]>
---
drivers/iommu/intel-iommu.c | 6 ++----
1 files changed, 2 insertions(+), 4 deletions(-)
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index f256ffc..7b7127a 100644
--- a/drivers/iommu/intel-iommu.c
+++ b/drivers/iommu/intel-iommu.c
@@ -848,13 +848,11 @@ static struct dma_pte *pfn_to_dma_pte(struct dmar_domain
*domain,
domain_flush_cache(domain, tmp_page, VTD_PAGE_SIZE);
pteval = ((uint64_t)virt_to_dma_pfn(tmp_page) <<
VTD_PAGE_SHIFT) | DMA_PTE_READ | DMA_PTE_WRITE;
- if (cmpxchg64(&pte->val, 0ULL, pteval)) {
+ if (cmpxchg64(&pte->val, 0ULL, pteval))
/* Someone else set it while we were thinking;
use theirs. */
free_pgtable_page(tmp_page);
- } else {
- dma_pte_addr(pte);
+ else
domain_flush_cache(domain, pte, sizeof(*pte));
- }
}
if (level == 1)
break;
--
1.7.1
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