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

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Message-ID: <lsq.1366640759.250320091@decadent.org.uk>
Date:	Mon, 22 Apr 2013 15:25:59 +0100
From:	Ben Hutchings <ben@...adent.org.uk>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:	akpm@...ux-foundation.org,
	"Grant Likely" <grant.likely@...retlab.ca>,
	"Jean-Christophe PLAGNIOL-VILLARD" <plagnioj@...osoft.com>,
	"Arnd Bergmann" <arnd@...db.de>,
	"Rob Herring" <rob.herring@...xeda.com>
Subject: [45/75] of: introduce helper to manage boolean

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

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

From: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@...osoft.com>

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@...osoft.com>
Acked-by: Rob Herring <rob.herring@...xeda.com>
Acked-by: Arnd Bergmann <arnd@...db.de>
Acked-by: Grant Likely <grant.likely@...retlab.ca>
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 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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