Commit cbc04008 authored by Robin Murphy's avatar Robin Murphy Committed by Joerg Roedel
Browse files

iommu/amd: Handle race between registration and device probe 



As for the Intel driver, make sure the AMD driver can cope with seeing
.probe_device calls without having to wait for all known instances to
register first.

Signed-off-by: default avatarRobin Murphy <robin.murphy@arm.com>
Link: https://lore.kernel.org/r/a8d8ebe12b411d28972f1ab928c6db92e8913cf5.1660572783.git.robin.murphy@arm.com


Signed-off-by: default avatarJoerg Roedel <jroedel@suse.de>
parent c919739c

drivers/iommu/amd/iommu.c

+4 −0
Original line number Diff line number Diff line
@@ -1851,6 +1851,10 @@ static struct iommu_device *amd_iommu_probe_device(struct device *dev) 
	if (!iommu)

		return ERR_PTR(-ENODEV);



	/* Not registered yet? */

	if (!iommu->iommu.ops)

		return ERR_PTR(-ENODEV);



	if (dev_iommu_priv_get(dev))

		return &iommu->iommu;