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[POWERPC] Add for_each_child_of_node() helper for iterating over child nodes

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Add for_each_child_of_node() to encapsulate the common idiom of
iterating over the children of a device_node.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Acked-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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Michael Ellerman 2007-11-26 19:03:45 +11:00 committed by Paul Mackerras
parent 18cce5d321
commit aabc08dc66
1 changed files with 4 additions and 0 deletions
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4
include/linux/of.h
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@ -46,6 +46,10 @@ extern struct device_node *of_find_node_by_phandle(phandle handle);
extern struct device_node *of_get_parent(const struct device_node *node);
extern struct device_node *of_get_next_child(const struct device_node *node,
struct device_node *prev);
#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))
extern struct property *of_find_property(const struct device_node *np,
const char *name,
int *lenp);