diff options
| -rw-r--r-- | arch/arm64/mm/dma-mapping.c | 17 |
1 files changed, 12 insertions, 5 deletions
diff --git a/arch/arm64/mm/dma-mapping.c b/arch/arm64/mm/dma-mapping.c index 1d7d5d2881db..0ec1ae933342 100644 --- a/arch/arm64/mm/dma-mapping.c +++ b/arch/arm64/mm/dma-mapping.c @@ -835,14 +835,21 @@ static bool do_iommu_attach(struct device *dev, const struct iommu_ops *ops, * then the IOMMU core will have already configured a group for this * device, and allocated the default domain for that group. */ - if (!domain || iommu_dma_init_domain(domain, dma_base, size, dev)) { - pr_warn("Failed to set up IOMMU for device %s; retaining platform DMA ops\n", - dev_name(dev)); - return false; + if (!domain) + goto out_err; + + if (domain->type == IOMMU_DOMAIN_DMA) { + if (iommu_dma_init_domain(domain, dma_base, size, dev)) + goto out_err; + + dev->archdata.dma_ops = &iommu_dma_ops; } - dev->archdata.dma_ops = &iommu_dma_ops; return true; +out_err: + pr_warn("Failed to set up IOMMU for device %s; retaining platform DMA ops\n", + dev_name(dev)); + return false; } static void queue_iommu_attach(struct device *dev, const struct iommu_ops *ops, |