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Suggested-by: Jason Gunthorpe Signed-off-by: Nicolin Chen --- drivers/iommu/dma-iommu.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/iommu/dma-iommu.c b/drivers/iommu/dma-iommu.c index f798c44e0903..f1e8d952b17d 100644 --- a/drivers/iommu/dma-iommu.c +++ b/drivers/iommu/dma-iommu.c @@ -545,6 +545,9 @@ static int iommu_dma_init_domain(struct iommu_domain *domain, dma_addr_t base, if (!cookie || cookie->type != IOMMU_DMA_IOVA_COOKIE) return -EINVAL; + if (WARN_ON(!device_iommu_unmanaged_supported(dev))) + return -EINVAL; + iovad = &cookie->iovad; /* Use the smallest supported page size for IOVA granularity */