of: Add of_property_write_string()

Setting a property to a string is used many times. Create a convenience
function for it.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

1 files changed, 22 insertions, 0 deletions

diff --git a/drivers/of/base.c b/drivers/of/base.c
index bef8f1de1a..01ab38907d 100644
--- a/drivers/of/base.c
+++ b/drivers/of/base.c
@@ -1217,6 +1217,28 @@ int of_property_write_u64_array(struct device_node *np,
 }
 
 /**
+ * of_property_write_string - Write a string to a property. If
+ * the property does not exist, it will be created and appended to the given
+ * device node.
+ *
+ * @np:		device node to which the property value is to be written.
+ * @propname:	name of the property to be written.
+ * value:	pointer to the string to write
+ *
+ * Search for a property in a device node and write a string to
+ * it. If the property does not exist, it will be created and appended to
+ * the device node. Returns 0 on success, -ENOMEM if the property or array
+ * of elements cannot be created.
+ */
+int of_property_write_string(struct device_node *np,
+			     const char *propname, const char *value)
+{
+	size_t len = strlen(value);
+
+	return of_set_property(np, propname, value, len + 1, 1);
+}
+
+/**
  * of_parse_phandle_from - Resolve a phandle property to a device_node pointer from
  * a given root node
  * @np: Pointer to device node holding phandle property