[PATCH 1/2] of: Return copy of live tree as fixed tree

[Sascha Hauer]

the of fixups modify the the tree passed to them. It is undesired that
these modify the live tree, so when we are requested to return the fixed
live tree then make a copy first.

Signed-off-by: Sascha Hauer <s.hauer at pengutronix.de>
---
 common/oftree.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/common/oftree.c b/common/oftree.c
index 075b9d6b8b..4868d8812e 100644
--- a/common/oftree.c
+++ b/common/oftree.c
@@ -325,6 +325,9 @@ struct fdt_header *of_get_fixed_tree(struct device_node *node)
 		node = of_get_root_node();
 		if (!node)
 			return NULL;
+		node = of_copy_node(NULL, node);
+		if (!node)
+			return NULL;
 	}
 
 	ret = of_fix_tree(node);
-- 
2.29.2