diff options
Diffstat (limited to 'drivers/iommu/amd_iommu.c')
| -rw-r--r-- | drivers/iommu/amd_iommu.c | 24 |
1 files changed, 7 insertions, 17 deletions
diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c index 517a5eb30360..1faf2e0dad32 100644 --- a/drivers/iommu/amd_iommu.c +++ b/drivers/iommu/amd_iommu.c @@ -1817,15 +1817,6 @@ static void free_gcr3_table(struct protection_domain *domain) free_page((unsigned long)domain->gcr3_tbl); } -/* - * little helper function to check whether a given protection domain is a - * dma_ops domain - */ -static bool dma_ops_domain(struct protection_domain *domain) -{ - return domain->flags & PD_DMA_OPS_MASK; -} - static void set_dte_entry(u16 devid, struct protection_domain *domain, struct domain_pgtable *pgtable, bool ats, bool ppr) @@ -2408,11 +2399,9 @@ static struct iommu_domain *amd_iommu_domain_alloc(unsigned type) domain->domain.geometry.aperture_end = ~0ULL; domain->domain.geometry.force_aperture = true; - if (type == IOMMU_DOMAIN_DMA) { - if (iommu_get_dma_cookie(&domain->domain) == -ENOMEM) - goto free_domain; - domain->flags = PD_DMA_OPS_MASK; - } + if (type == IOMMU_DOMAIN_DMA && + iommu_get_dma_cookie(&domain->domain) == -ENOMEM) + goto free_domain; return &domain->domain; @@ -3024,17 +3013,18 @@ struct iommu_domain *amd_iommu_get_v2_domain(struct pci_dev *pdev) if (!check_device(dev)) return NULL; - pdomain = get_dev_data(dev)->domain; + pdomain = get_dev_data(dev)->domain; + io_domain = iommu_get_domain_for_dev(dev); if (pdomain == NULL && get_dev_data(dev)->defer_attach) { get_dev_data(dev)->defer_attach = false; - io_domain = iommu_get_domain_for_dev(dev); pdomain = to_pdomain(io_domain); attach_device(dev, pdomain); } + if (pdomain == NULL) return NULL; - if (!dma_ops_domain(pdomain)) + if (io_domain->type != IOMMU_DOMAIN_DMA) return NULL; /* Only return IOMMUv2 domains */ |