diff options
| -rw-r--r-- | drivers/iommu/arm-smmu.c | 17 |
1 files changed, 13 insertions, 4 deletions
diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c index e11fefb4e19f..9389e1e8f531 100644 --- a/drivers/iommu/arm-smmu.c +++ b/drivers/iommu/arm-smmu.c @@ -978,11 +978,20 @@ static void arm_smmu_flush_pgtable(struct arm_smmu_domain *smmu_domain, * recursion here as the SMMU table walker will not be wired * through another SMMU. */ - if (smmu) - dma_map_page(smmu->dev, virt_to_page(addr), - offset, size, DMA_TO_DEVICE); - else + if (smmu) { + dma_addr_t handle = + dma_map_page(smmu->dev, virt_to_page(addr), + offset, size, DMA_TO_DEVICE); + if (handle == DMA_ERROR_CODE) + dev_err(smmu->dev, + "Couldn't flush page tables at %p!\n", + addr); + else + dma_unmap_page(smmu->dev, handle, size, + DMA_TO_DEVICE); + } else { dmac_clean_range(addr, addr + size); + } } } |