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dt: introduce of_get_child_by_name to get child node by name

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This patch introduces of_get_child_by_name function to get a child node
by its name in a given parent node.

Without this patch each driver code has to iterate the parent and do
a string compare, However having of_get_child_by_name libary function would
avoid code duplication, errors and is more convenient.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com>
Signed-off-by: Rob Herring <rob.herring@calxeda.com>
This commit is contained in:
Srinivas Kandagatla 2012-09-18 08:10:28 +01:00 • committed by Rob Herring
parent ee67016fcc
commit 9c19761a7e
2 changed files with 25 additions and 0 deletions
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include/linux/of.h
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@ -190,6 +190,8 @@ extern struct device_node *of_get_parent(const struct device_node *node);
extern struct device_node *of_get_next_parent(struct device_node *node);
extern struct device_node *of_get_next_child(const struct device_node *node,
struct device_node *prev);
extern struct device_node *of_get_child_by_name(const struct device_node *node,
const char *name);
#define for_each_child_of_node(parent, child) \
for (child = of_get_next_child(parent, NULL); child != NULL; \
child = of_get_next_child(parent, child))