[v2,03/22] device property: add fwnode_get_name()

Commit Message

Tomeu Vizoso July 28, 2015, 1:19 p.m. UTC

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

Signed-off-by: Tomeu Vizoso <[e-mail]>
---

Changes in v2:
- Use of_node_full_name()

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

Patch

diff --git a/drivers/base/property.c b/drivers/base/property.c
index f3f6d167f3f1..efa74803af30 100644
--- a/drivers/base/property.c
+++ b/drivers/base/property.c
@@ -533,3 +533,18 @@  bool device_dma_is_coherent(struct device *dev)
 	return coherent;
 }
 EXPORT_SYMBOL_GPL(device_dma_is_coherent);
+
+/**
+ * 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 of_node_full_name(to_of_node(fwnode));
+	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 76ebde9c11d4..826f156f7288 100644
--- a/include/linux/property.h
+++ b/include/linux/property.h
@@ -63,6 +63,8 @@  int fwnode_property_read_string(struct fwnode_handle *fwnode,
 struct fwnode_handle *device_get_next_child_node(struct device *dev,
 						 struct fwnode_handle *child);
 
+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))