PD_MODE_NONE
if (ret || amd_iommu_pgtable == PD_MODE_NONE) {
if (!dev_table || amd_iommu_pgtable == PD_MODE_NONE)
amd_iommu_pgtable = PD_MODE_NONE;
if (amd_iommu_pgtable == PD_MODE_NONE) {