Allocation of dev->iommu must be done under the iommu_probe_device_lock. Mark this with lockdep to discourage future mistakes. Signed-off-by: Jason Gunthorpe <jgg@xxxxxxxxxx> --- drivers/iommu/iommu.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index 9f23e113f46bc7..1cf9f62c047c7d 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -345,6 +345,8 @@ 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