iommu: Rename iommu_get_instance()

Rename the function to iommu_ops_from_fwnode(), because that
is what the function actually does. The new name is much
more descriptive about what the function does.

Signed-off-by: Joerg Roedel <jroedel@suse.de>

drivers/acpi/arm64/iort.c

@@ -536,7 +536,7 @@ static const struct iommu_ops *iort_iommu_xlate(struct device *dev,
 		if (!iort_fwnode)
 			return NULL;
 
-		ops = iommu_get_instance(iort_fwnode);
+		ops = iommu_ops_from_fwnode(iort_fwnode);
 		if (!ops)
 			return NULL;
 

drivers/iommu/iommu.c

@@ -1664,7 +1664,7 @@ void iommu_register_instance(struct fwnode_handle *fwnode,
 	spin_unlock(&iommu_instance_lock);
 }
 
-const struct iommu_ops *iommu_get_instance(struct fwnode_handle *fwnode)
+const struct iommu_ops *iommu_ops_from_fwnode(struct fwnode_handle *fwnode)
 {
 	struct iommu_instance *instance;
 	const struct iommu_ops *ops = NULL;

include/linux/iommu.h

@@ -354,7 +354,7 @@ void iommu_fwspec_free(struct device *dev);
 int iommu_fwspec_add_ids(struct device *dev, u32 *ids, int num_ids);
 void iommu_register_instance(struct fwnode_handle *fwnode,
 			     const struct iommu_ops *ops);
-const struct iommu_ops *iommu_get_instance(struct fwnode_handle *fwnode);
+const struct iommu_ops *iommu_ops_from_fwnode(struct fwnode_handle *fwnode);
 
 #else /* CONFIG_IOMMU_API */
 
@@ -590,7 +590,7 @@ static inline void iommu_register_instance(struct fwnode_handle *fwnode,
 }
 
 static inline
-const struct iommu_ops *iommu_get_instance(struct fwnode_handle *fwnode)
+const struct iommu_ops *iommu_ops_from_fwnode(struct fwnode_handle *fwnode)
 {
 	return NULL;
 }

include/linux/of_iommu.h

@@ -39,7 +39,7 @@ static inline void of_iommu_set_ops(struct device_node *np,
 
 static inline const struct iommu_ops *of_iommu_get_ops(struct device_node *np)
 {
-	return iommu_get_instance(&np->fwnode);
+	return iommu_ops_from_fwnode(&np->fwnode);
 }
 
 extern struct of_device_id __iommu_of_table;