[PATCH] of: introduce of_get_available_child_count
From: Bryan Wu <hidden>
Date: 2013-09-24 17:50:09
Subsystem:
open firmware and flattened device tree, the rest · Maintainers:
Rob Herring, Saravana Kannan, Linus Torvalds
Some drivers keep counting available child by themselves. So introduce a new simple API like of_get_child_count() but for available childs. Cc: Josh Wu <redacted> Signed-off-by: Bryan Wu <redacted> --- include/linux/of.h | 16 ++++++++++++++++ 1 file changed, 16 insertions(+)
diff --git a/include/linux/of.h b/include/linux/of.h
index f95aee3..54c2560 100644
--- a/include/linux/of.h
+++ b/include/linux/of.h@@ -226,6 +226,17 @@ static inline int of_get_child_count(const struct device_node *np) return num; } +static inline int of_get_available_child_count(const struct device_node *np) +{ + struct device_node *child; + int num = 0; + + for_each_available_child_of_node(np, child) + num++; + + return num; +} + extern struct device_node *of_find_node_with_property( struct device_node *from, const char *prop_name); #define for_each_node_with_property(dn, prop_name) \
@@ -376,6 +387,11 @@ static inline int of_get_child_count(const struct device_node *np) return 0; } +static inline int of_get_available_child_count(const struct device_node *np) +{ + return 0; +} + static inline int of_device_is_compatible(const struct device_node *device, const char *name) {
--
1.8.1.5
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