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Diffstat (limited to 'drivers/iommu/amd_iommu.c')
| -rw-r--r-- | drivers/iommu/amd_iommu.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c index 989c1ae0397..23c5be6a3a1 100644 --- a/drivers/iommu/amd_iommu.c +++ b/drivers/iommu/amd_iommu.c @@ -1393,6 +1393,9 @@ static int iommu_map_page(struct protection_domain *dom, count = PAGE_SIZE_PTE_COUNT(page_size); pte = alloc_pte(dom, bus_addr, page_size, NULL, GFP_KERNEL); + if (!pte) + return -ENOMEM; + for (i = 0; i < count; ++i) if (IOMMU_PTE_PRESENT(pte[i])) return -EBUSY; |