[PATCH 07/17] of: implement of_get_stdoutpath()

[Sascha Hauer]

For deep probe support it will be useful to have a function to
get the node corresponding to the stdoutpath. of_device_is_stdout_path()
already has that functionality in it, so make a separate funcion from
it.

Signed-off-by: Sascha Hauer <s.hauer at pengutronix.de>
---
 drivers/of/base.c | 15 ++++++++++-----
 include/of.h      |  6 ++++++
 2 files changed, 16 insertions(+), 5 deletions(-)

diff --git a/drivers/of/base.c b/drivers/of/base.c
index 1518854d2e..1e3921f915 100644
--- a/drivers/of/base.c
+++ b/drivers/of/base.c
@@ -2434,16 +2434,13 @@ void of_delete_node(struct device_node *node)
 		of_set_root_node(NULL);
 }
 
-int of_device_is_stdout_path(struct device_d *dev)
+struct device_node *of_get_stdoutpath(void)
 {
 	struct device_node *dn;
 	const char *name;
 	const char *p;
 	char *q;
 
-	if (!dev->device_node)
-		return 0;
-
 	name = of_get_property(of_chosen, "stdout-path", NULL);
 	if (!name)
 		name = of_get_property(of_chosen, "linux,stdout-path", NULL);
@@ -2462,7 +2459,15 @@ int of_device_is_stdout_path(struct device_d *dev)
 
 	free(q);
 
-	return dn == dev->device_node;
+	return dn;
+}
+
+int of_device_is_stdout_path(struct device_d *dev)
+{
+	if (!dev->device_node)
+		return 0;
+
+	return dev->device_node == of_get_stdoutpath();
 }
 
 /**
diff --git a/include/of.h b/include/of.h
index 1f68d78b24..a3527c1afd 100644
--- a/include/of.h
+++ b/include/of.h
@@ -280,6 +280,7 @@ struct cdev *of_parse_partition(struct cdev *cdev, struct device_node *node);
 int of_parse_partitions(struct cdev *cdev, struct device_node *node);
 int of_fixup_partitions(struct device_node *np, struct cdev *cdev);
 int of_partitions_register_fixup(struct cdev *cdev);
+struct device_node *of_get_stdoutpath(void);
 int of_device_is_stdout_path(struct device_d *dev);
 const char *of_get_model(void);
 void *of_flatten_dtb(struct device_node *node);
@@ -317,6 +318,11 @@ static inline int of_partitions_register_fixup(struct cdev *cdev)
 	return -ENOSYS;
 }
 
+static inline struct device_node *of_get_stdoutpath(void)
+{
+	return NULL;
+}
+
 static inline int of_device_is_stdout_path(struct device_d *dev)
 {
 	return 0;
-- 
2.29.2