linux-kernel - [PATCH v1 05/10] device property: add fwnode_get

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Message-Id: <1435676108-20590-6-git-send-email-tomeu.vizoso@collabora.com>
Date:	Tue, 30 Jun 2015 16:55:03 +0200
From:	Tomeu Vizoso <tomeu.vizoso@...labora.com>
To:	linux-kernel@...r.kernel.org
Cc:	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Mark Brown <broonie@...nel.org>,
	Tomeu Vizoso <tomeu.vizoso@...labora.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: [PATCH v1 05/10] device property: add fwnode_get_name()

Getting a textual representation of a device node can be very useful for
debugging.

Signed-off-by: Tomeu Vizoso <tomeu.vizoso@...labora.com>
---

 drivers/base/property.c  | 15 +++++++++++++++
 include/linux/property.h |  2 ++
 2 files changed, 17 insertions(+)

diff --git a/drivers/base/property.c b/drivers/base/property.c
index a7fb46b..3280b04 100644
--- a/drivers/base/property.c
+++ b/drivers/base/property.c
@@ -556,3 +556,18 @@ struct fwnode_handle *fwnode_get_parent(struct fwnode_handle *fwnode)
 	return NULL;
 }
 EXPORT_SYMBOL_GPL(fwnode_get_parent);
+
+/**
+ * fwnode_get_name - return the name of a device node
+ * @fwnode: Device node to find the name of
+ */
+const char *fwnode_get_name(struct fwnode_handle *fwnode)
+{
+	if (is_of_node(fwnode))
+		return to_of_node(fwnode)->full_name;
+	else if (is_acpi_node(fwnode))
+		return acpi_dev_name(to_acpi_node(fwnode));
+
+	return NULL;
+}
+EXPORT_SYMBOL_GPL(fwnode_get_name);
diff --git a/include/linux/property.h b/include/linux/property.h
index f47092d..020a53c 100644
--- a/include/linux/property.h
+++ b/include/linux/property.h
@@ -65,6 +65,8 @@ struct fwnode_handle *device_get_next_child_node(struct device *dev,
 
 struct fwnode_handle *fwnode_get_parent(struct fwnode_handle *fwnode);
 
+const char *fwnode_get_name(struct fwnode_handle *fwnode);
+
 #define device_for_each_child_node(dev, child) \
 	for (child = device_get_next_child_node(dev, NULL); child; \
 	     child = device_get_next_child_node(dev, child))
-- 
2.4.1

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