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Commit 55c99a4d authored by Joerg Roedel's avatar Joerg Roedel
Browse files

iommu/amd: Use iommu_attach_group() 



Since the conversion to default domains the
iommu_attach_device function only works for devices with
their own group. But this isn't always true for current
IOMMUv2 capable devices, so use iommu_attach_group instead.

Signed-off-by: default avatarJoerg Roedel <jroedel@suse.de>
parent cbfe8fa6

drivers/iommu/amd_iommu_v2.c

+21 −3
Original line number Diff line number Diff line
@@ -132,11 +132,19 @@ static struct device_state *get_device_state(u16 devid) 


static void free_device_state(struct device_state *dev_state)

{

	struct iommu_group *group;



	/*

	 * First detach device from domain - No more PRI requests will arrive

	 * from that device after it is unbound from the IOMMUv2 domain.

	 */

	iommu_detach_device(dev_state->domain, &dev_state->pdev->dev);

	group = iommu_group_get(&dev_state->pdev->dev);

	if (WARN_ON(!group))

		return;



	iommu_detach_group(dev_state->domain, group);



	iommu_group_put(group);



	/* Everything is down now, free the IOMMUv2 domain */

	iommu_domain_free(dev_state->domain);
@@ -731,6 +739,7 @@ EXPORT_SYMBOL(amd_iommu_unbind_pasid); 
int amd_iommu_init_device(struct pci_dev *pdev, int pasids)

{

	struct device_state *dev_state;

	struct iommu_group *group;

	unsigned long flags;

	int ret, tmp;

	u16 devid;
@@ -776,10 +785,16 @@ int amd_iommu_init_device(struct pci_dev *pdev, int pasids) 
	if (ret)

		goto out_free_domain;



	ret = iommu_attach_device(dev_state->domain, &pdev->dev);

	if (ret != 0)

	group = iommu_group_get(&pdev->dev);

	if (!group)

		goto out_free_domain;



	ret = iommu_attach_group(dev_state->domain, group);

	if (ret != 0)

		goto out_drop_group;



	iommu_group_put(group);



	spin_lock_irqsave(&state_lock, flags);



	if (__get_device_state(devid) != NULL) {
@@ -794,6 +809,9 @@ int amd_iommu_init_device(struct pci_dev *pdev, int pasids) 


	return 0;



out_drop_group:

	iommu_group_put(group);



out_free_domain:

	iommu_domain_free(dev_state->domain);