[PATCH v5 3/3] of/property: Add of_fwnode_name()

From: Heikki Krogerus
Date: Wed Nov 28 2018 - 07:00:08 EST


This implements get_name fwnode op for DT.

Reviewed-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Signed-off-by: Heikki Krogerus <heikki.krogerus@xxxxxxxxxxxxxxx>
---
drivers/of/property.c | 13 +++++++++++++
1 file changed, 13 insertions(+)

diff --git a/drivers/of/property.c b/drivers/of/property.c
index f46828e3b082..403bc9cbbaf4 100644
--- a/drivers/of/property.c
+++ b/drivers/of/property.c
@@ -823,6 +823,18 @@ static void of_fwnode_put(struct fwnode_handle *fwnode)
of_node_put(to_of_node(fwnode));
}

+static int of_fwnode_get_name(const struct fwnode_handle *fwnode, char *buf,
+ size_t len)
+{
+ const struct device_node *node = to_of_node(fwnode);
+
+ if (len < snprintf(NULL, 0, "%pOFn", node) + 1)
+ return -EOVERFLOW;
+
+ sprintf(buf, "%pOFn", node);
+ return 0;
+}
+
static bool of_fwnode_device_is_available(const struct fwnode_handle *fwnode)
{
return of_device_is_available(to_of_node(fwnode));
@@ -987,6 +999,7 @@ of_fwnode_device_get_match_data(const struct fwnode_handle *fwnode,
const struct fwnode_operations of_fwnode_ops = {
.get = of_fwnode_get,
.put = of_fwnode_put,
+ .get_name = of_fwnode_get_name,
.device_is_available = of_fwnode_device_is_available,
.device_get_match_data = of_fwnode_device_get_match_data,
.property_present = of_fwnode_property_present,
--
2.19.2