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: Robin Murphy <robin.murphy@xxxxxxx> --- v3: New drivers/iommu/amd/iommu.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/iommu/amd/iommu.c b/drivers/iommu/amd/iommu.c index 840831d5d2ad..2f8e8f818a6c 100644 --- a/drivers/iommu/amd/iommu.c +++ b/drivers/iommu/amd/iommu.c @@ -1757,6 +1757,10 @@ static struct iommu_device *amd_iommu_probe_device(struct device *dev) devid = get_device_id(dev); iommu = amd_iommu_rlookup_table[devid]; + /* Not registered yet? */ + if (!iommu->iommu.ops) + return ERR_PTR(-ENODEV); + if (dev_iommu_priv_get(dev)) return &iommu->iommu; -- 2.36.1.dirty
