diff mbox

[v3,1/3] core/device: Function to return child node using name

Message ID 20150204065842.3278.11609.stgit@localhost.localdomain
State Accepted
Headers show

Commit Message

Neelesh Gupta Feb. 4, 2015, 6:59 a.m. UTC 
Add a function dt_find_by_name() that returns the child node if
matches the given name, otherwise NULL.

Signed-off-by: Neelesh Gupta <neelegup@linux.vnet.ibm.com>
---
 core/device.c    |   16 ++++++++++++++++
 include/device.h |    3 +++
 2 files changed, 19 insertions(+)
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Patch

diff --git a/core/device.c b/core/device.c
index 51ddbdb..09f76d7 100644
--- a/core/device.c
+++ b/core/device.c
@@ -250,6 +250,22 @@  struct dt_node *dt_find_by_path(struct dt_node *root, const char *path)
 	return root;
 }
 
+struct dt_node *dt_find_by_name(struct dt_node *root, const char *name)
+{
+	struct dt_node *child, *match;
+
+	list_for_each(&root->children, child, list) {
+		if (!strcmp(child->name, name))
+			return child;
+
+		match = dt_find_by_name(child, name);
+		if (match)
+			return match;
+	}
+
+	return NULL;
+}
+
 struct dt_node *dt_find_by_phandle(struct dt_node *root, u32 phandle)
 {
 	struct dt_node *node;
diff --git a/include/device.h b/include/device.h
index 16c26bb..b301958 100644
--- a/include/device.h
+++ b/include/device.h
@@ -167,6 +167,9 @@  char *dt_get_path(const struct dt_node *node);
 /* Find a node by path */
 struct dt_node *dt_find_by_path(struct dt_node *root, const char *path);
 
+/* Find a child node by name */
+struct dt_node *dt_find_by_name(struct dt_node *root, const char *name);
+
 /* Find a node by phandle */
 struct dt_node *dt_find_by_phandle(struct dt_node *root, u32 phandle);