Hello.
On 11-02-2012 21:22, Dong Aisheng wrote:
Currently most code to get child count in kernel are almost same,
add a helper to implement this function for dt to use.
Signed-off-by: Dong Aisheng<[email protected]>
Cc: Grant Likely<[email protected]>
Cc: Rob Herring<[email protected]>
---
Hi Rob,
Since my imx pinctrl driver series still depends on the pinctrl core dt
binding patch which is still not in mainline, i'd like this pure dt patch
go separately first in case others want to use.
changes v2->v3:
Addressed some people's comments:
* do not use assignment as expression
* return 0 for non-dt case
Changes v1->v2:
* change the name from of_get_child_number to of_get_child_count
---
include/linux/of.h | 16 ++++++++++++++++
1 files changed, 16 insertions(+), 0 deletions(-)
diff --git a/include/linux/of.h b/include/linux/of.h
index a75a831..ae242ef 100644
--- a/include/linux/of.h
+++ b/include/linux/of.h
@@ -195,6 +195,17 @@ extern struct device_node *of_get_next_child(const struct
device_node *node,
for (child = of_get_next_child(parent, NULL); child != NULL; \
child = of_get_next_child(parent, child))
+static inline int of_get_child_count(const struct device_node *np)
+{
+ struct device_node *child = NULL;
+ int num = 0;
+
+ while ((child = of_get_next_child(np, child)) != NULL)
Doesn't scripts/checkpatch.pl complain here?
+ num++;
+
+ return num;
+}
+
WBR, Sergei
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