Allocation of dev->iommu must be done under the iommu_probe_device_lock. Mark this with lockdep to discourage future mistakes.
Reviewed-by: Jerry Snitselaar <jsnit...@redhat.com> Tested-by: Hector Martin <mar...@marcan.st> Signed-off-by: Jason Gunthorpe <j...@nvidia.com> --- drivers/iommu/iommu.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index 0d25468d53a68a..4323b6276e977f 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -334,6 +334,8 @@ static struct dev_iommu *dev_iommu_get(struct device *dev) { struct dev_iommu *param = dev->iommu; + lockdep_assert_held(&iommu_probe_device_lock); + if (param) return param; -- 2.42.0