diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c index c3d18cd77d2f..2702e9aa2241 100644 --- a/drivers/iommu/intel/iommu.c +++ b/drivers/iommu/intel/iommu.c @@ -157,7 +157,10 @@ static void device_rbtree_remove(struct device_domain_info *info) unsigned long flags; spin_lock_irqsave(&iommu->device_rbtree_lock, flags); - rb_erase(&info->node, &iommu->device_rbtree); + if (!RB_EMPTY_NODE(&info->node)) { + rb_erase(&info->node, &iommu->device_rbtree); + RB_CLEAR_NODE(&info->node); + } spin_unlock_irqrestore(&iommu->device_rbtree_lock, flags); } @@ -3254,6 +3257,7 @@ static struct iommu_device *intel_iommu_probe_device(struct device *dev) info->dev = dev; info->iommu = iommu; + RB_CLEAR_NODE(&info->node); if (dev_is_pci(dev)) { if (ecap_dev_iotlb_support(iommu->ecap) && pci_ats_supported(pdev) &&