[PATCH v4 03/16] of: dynamic: Add __of_node_dupv()

[Laurent Pinchart]

From: Pantelis Antoniou <pantelis.anton...@konsulko.com>

Add an __of_node_dupv() private method and make __of_node_dup() use it.
This is required for the subsequent changeset accessors which will
make use of it.

Signed-off-by: Pantelis Antoniou <pantelis.anton...@konsulko.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart+rene...@ideasonboard.com>
---
 drivers/of/dynamic.c | 29 +++++++++++++++++++++++------
 1 file changed, 23 insertions(+), 6 deletions(-)

diff --git a/drivers/of/dynamic.c b/drivers/of/dynamic.c
index 7bb33d22b4e2..4ffd04925fdf 100644
--- a/drivers/of/dynamic.c
+++ b/drivers/of/dynamic.c
@@ -382,8 +382,9 @@ struct property *__of_prop_dup(const struct property *prop, 
gfp_t allocflags)
 }
 
 /**
- * __of_node_dup() - Duplicate or create an empty device node dynamically.
- * @fmt: Format string (plus vargs) for new full name of the device node
+ * __of_node_dupv() - Duplicate or create an empty device node dynamically.
+ * @fmt: Format string for new full name of the device node
+ * @vargs: va_list containing the arugments for the node full name
  *
  * Create an device tree node, either by duplicating an empty node or by 
allocating
  * an empty one suitable for further modification.  The node data are
@@ -391,17 +392,15 @@ struct property *__of_prop_dup(const struct property 
*prop, gfp_t allocflags)
  * OF_DETACHED bits set. Returns the newly allocated node or NULL on out of
  * memory error.
  */
-struct device_node *__of_node_dup(const struct device_node *np, const char 
*fmt, ...)
+struct device_node *__of_node_dupv(const struct device_node *np,
+               const char *fmt, va_list vargs)
 {
-       va_list vargs;
        struct device_node *node;
 
        node = kzalloc(sizeof(*node), GFP_KERNEL);
        if (!node)
                return NULL;
-       va_start(vargs, fmt);
        node->full_name = kvasprintf(GFP_KERNEL, fmt, vargs);
-       va_end(vargs);
        if (!node->full_name) {
                kfree(node);
                return NULL;
@@ -433,6 +432,24 @@ struct device_node *__of_node_dup(const struct device_node 
*np, const char *fmt,
        return NULL;
 }
 
+/**
+ * __of_node_dup() - Duplicate or create an empty device node dynamically.
+ * @fmt: Format string (plus vargs) for new full name of the device node
+ *
+ * See: __of_node_dupv()
+ */
+struct device_node *__of_node_dup(const struct device_node *np,
+               const char *fmt, ...)
+{
+       va_list vargs;
+       struct device_node *node;
+
+       va_start(vargs, fmt);
+       node = __of_node_dupv(np, fmt, vargs);
+       va_end(vargs);
+       return node;
+}
+
 static void __of_changeset_entry_destroy(struct of_changeset_entry *ce)
 {
        of_node_put(ce->np);
-- 
Regards,

Laurent Pinchart