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Commit 063071df authored by Joerg Roedel's avatar Joerg Roedel
Browse files

iommu/amd: Use default domain if available for DMA-API 



Signed-off-by: default avatarJoerg Roedel <jroedel@suse.de>
parent 35cf248f

drivers/iommu/amd_iommu.c

+7 −0
Original line number Diff line number Diff line
@@ -2495,12 +2495,19 @@ void amd_iommu_init_notifier(void) 
static struct protection_domain *get_domain(struct device *dev)

{

	struct protection_domain *domain;

	struct iommu_domain *io_domain;

	struct dma_ops_domain *dma_dom;

	u16 devid = get_device_id(dev);



	if (!check_device(dev))

		return ERR_PTR(-EINVAL);



	io_domain = iommu_get_domain_for_dev(dev);

	if (io_domain) {

		domain = to_pdomain(io_domain);

		return domain;

	}



	domain = domain_for_device(dev);

	if (domain != NULL && !dma_ops_domain(domain))

		return ERR_PTR(-EBUSY);