diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c
index 0d9adce6d812f7e0e32fd2f9c3f7ebd15976ce0a..9b8664d388af04b517313f599b0ae28d15878812 100644
--- a/drivers/iommu/iommu.c
+++ b/drivers/iommu/iommu.c
@@ -2872,10 +2872,12 @@ EXPORT_SYMBOL_GPL(iommu_dev_has_feature);
 
 int iommu_dev_enable_feature(struct device *dev, enum iommu_dev_features feat)
 {
-	const struct iommu_ops *ops = dev->bus->iommu_ops;
+	if (dev->iommu && dev->iommu->iommu_dev) {
+		const struct iommu_ops *ops = dev->iommu->iommu_dev->ops;
 
-	if (ops && ops->dev_enable_feat)
-		return ops->dev_enable_feat(dev, feat);
+		if (ops->dev_enable_feat)
+			return ops->dev_enable_feat(dev, feat);
+	}
 
 	return -ENODEV;
 }
@@ -2888,10 +2890,12 @@ EXPORT_SYMBOL_GPL(iommu_dev_enable_feature);
  */
 int iommu_dev_disable_feature(struct device *dev, enum iommu_dev_features feat)
 {
-	const struct iommu_ops *ops = dev->bus->iommu_ops;
+	if (dev->iommu && dev->iommu->iommu_dev) {
+		const struct iommu_ops *ops = dev->iommu->iommu_dev->ops;
 
-	if (ops && ops->dev_disable_feat)
-		return ops->dev_disable_feat(dev, feat);
+		if (ops->dev_disable_feat)
+			return ops->dev_disable_feat(dev, feat);
+	}
 
 	return -EBUSY;
 }
@@ -2899,10 +2903,12 @@ EXPORT_SYMBOL_GPL(iommu_dev_disable_feature);
 
 bool iommu_dev_feature_enabled(struct device *dev, enum iommu_dev_features feat)
 {
-	const struct iommu_ops *ops = dev->bus->iommu_ops;
+	if (dev->iommu && dev->iommu->iommu_dev) {
+		const struct iommu_ops *ops = dev->iommu->iommu_dev->ops;
 
-	if (ops && ops->dev_feat_enabled)
-		return ops->dev_feat_enabled(dev, feat);
+		if (ops->dev_feat_enabled)
+			return ops->dev_feat_enabled(dev, feat);
+	}
 
 	return false;
 }