[RFC PATCH v2 45/74] dtc: Handle orphan nodes in get_xxx_by_yyy()

[Herve Codina]

Orphan nodes have been introduced recently.

Retrieving a node, a property and/or a marker from an orphan node tree
is perfectly legit.

Those retrievals are performed by the get_xxx_by_yyy() functions family.

Update them to handle orphan nodes.

Note: Retrieving a node by path (get_node_py_path() function) from an
orphan node tree is not yet supported. Indeed, there is no way to define
a path involving an orphan node.

Signed-off-by: Herve Codina <herve.codina@xxxxxxxxxxx>
---
 livetree.c | 35 +++++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)

diff --git a/livetree.c b/livetree.c
index fddb4b4f..c61025a5 100644
--- a/livetree.c
+++ b/livetree.c
@@ -917,6 +917,7 @@ struct node *get_node_by_path(struct dt_info *dti, const char *path)
 
 struct node *get_node_by_label(struct dt_info *dti, const char *label)
 {
+	struct node *orphan;
 	struct node *node;
 
 	if (dti->dt) {
@@ -925,11 +926,18 @@ struct node *get_node_by_label(struct dt_info *dti, const char *label)
 			return node;
 	}
 
+	for_each_orphan(dti->orphanlist, orphan) {
+		node = get_node_by_label_(orphan, label);
+		if (node)
+			return node;
+	}
+
 	return NULL;
 }
 
 struct node *get_node_by_phandle(struct dt_info *dti, cell_t phandle)
 {
+	struct node *orphan;
 	struct node *node;
 
 	if (dti->dt) {
@@ -938,11 +946,18 @@ struct node *get_node_by_phandle(struct dt_info *dti, cell_t phandle)
 			return node;
 	}
 
+	for_each_orphan(dti->orphanlist, orphan) {
+		node = get_node_by_phandle_(orphan, phandle);
+		if (node)
+			return node;
+	}
+
 	return NULL;
 }
 
 struct node *get_node_by_ref(struct dt_info *dti, const char *ref)
 {
+	struct node *orphan;
 	struct node *node;
 
 	if (dti->dt) {
@@ -951,6 +966,12 @@ struct node *get_node_by_ref(struct dt_info *dti, const char *ref)
 			return node;
 	}
 
+	for_each_orphan(dti->orphanlist, orphan) {
+		node = get_node_by_ref_(orphan, ref);
+		if (node)
+			return node;
+	}
+
 	return NULL;
 }
 
@@ -970,6 +991,7 @@ struct property *get_property_by_label(struct dt_info *dti, const char *label,
 				       struct node **node)
 {
 	struct property *property;
+	struct node *orphan;
 
 	if (dti->dt) {
 		property = get_property_by_label_(dti->dt, label, node);
@@ -977,6 +999,12 @@ struct property *get_property_by_label(struct dt_info *dti, const char *label,
 			return property;
 	}
 
+	for_each_orphan(dti->orphanlist, orphan) {
+		property = get_property_by_label_(orphan, label, node);
+		if (property)
+			return property;
+	}
+
 	*node = NULL;
 	return NULL;
 }
@@ -985,6 +1013,7 @@ struct marker *get_marker_label(struct dt_info *dti, const char *label,
 				struct node **node, struct property **prop)
 {
 	struct marker *marker;
+	struct node *orphan;
 
 	if (dti->dt) {
 		marker = get_marker_label_(dti->dt, label, node, prop);
@@ -992,6 +1021,12 @@ struct marker *get_marker_label(struct dt_info *dti, const char *label,
 			return marker;
 	}
 
+	for_each_orphan(dti->orphanlist, orphan) {
+		marker = get_marker_label_(orphan, label, node, prop);
+		if (marker)
+			return marker;
+	}
+
 	*prop = NULL;
 	*node = NULL;
 	return NULL;
-- 
2.55.0