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of: introduce of_get_available_child_count

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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 <josh.wu@atmel.com>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
Acked-by: Rob Herring <rob.herring@calxeda.com>
This commit is contained in:
Bryan Wu
2013-09-24 10:38:26 -07:00
parent bb6febdc90
commit 954e04b949
1 changed files with 16 additions and 0 deletions
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16
include/linux/of.h
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@@ -226,6 +226,17 @@ static inline int of_get_child_count(const struct device_node *np)
return num; 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( extern struct device_node *of_find_node_with_property(
struct device_node *from, const char *prop_name); struct device_node *from, const char *prop_name);
#define for_each_node_with_property(dn, 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; 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, static inline int of_device_is_compatible(const struct device_node *device,
const char *name) const char *name)
{ {