[45/75] of: introduce helper to manage boolean

[Ben Hutchings]

3.2.44-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@xxxxxxxxxxxx>

commit fa4d34ccd0914ac87336ea2c17e9370dfecef286 upstream.

of_property_read_bool

Search for a property in a device node.
Returns true if the property exist false otherwise.

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@xxxxxxxxxxxx>
Acked-by: Rob Herring <rob.herring@xxxxxxxxxxx>
Acked-by: Arnd Bergmann <arnd@xxxxxxxx>
Acked-by: Grant Likely <grant.likely@xxxxxxxxxxxx>
Signed-off-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
---
 include/linux/of.h |   16 ++++++++++++++++
 1 file changed, 16 insertions(+)

--- a/include/linux/of.h
+++ b/include/linux/of.h
@@ -336,6 +336,22 @@ static inline int of_machine_is_compatib
 #define of_match_node(_matches, _node)	NULL
 #endif /* CONFIG_OF */
 
+/**
+ * of_property_read_bool - Findfrom a property
+ * @np:		device node from which the property value is to be read.
+ * @propname:	name of the property to be searched.
+ *
+ * Search for a property in a device node.
+ * Returns true if the property exist false otherwise.
+ */
+static inline bool of_property_read_bool(const struct device_node *np,
+					 const char *propname)
+{
+	struct property *prop = of_find_property(np, propname, NULL);
+
+	return prop ? true : false;
+}
+
 static inline int of_property_read_u32(const struct device_node *np,
 				       const char *propname,
 				       u32 *out_value)

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