[PATCH 01/12] oftree: add of_fix_tree()

[Sascha Hauer]

Currently we have of_get_fixed_tree() which assumes that
there is a global variable holding a oftree. This seems
not very flexible, so for now introduce a of_fix_tree()
which takes an fdt_header as argument and walks the
list of registered of fixup functions.

Signed-off-by: Sascha Hauer <s.hauer at pengutronix.de>
---
 common/oftree.c |   22 +++++++++++++++-------
 include/of.h    |    1 +
 2 files changed, 16 insertions(+), 7 deletions(-)

diff --git a/common/oftree.c b/common/oftree.c
index 2a2f464..a657d31 100644
--- a/common/oftree.c
+++ b/common/oftree.c
@@ -293,20 +293,28 @@ int of_register_fixup(int (*fixup)(struct fdt_header *))
 	return 0;
 }
 
-struct fdt_header *of_get_fixed_tree(void)
+int of_fix_tree(struct fdt_header *fdt)
 {
 	struct of_fixup *of_fixup;
 	int ret;
 
-	if (!barebox_fdt)
-		return NULL;
-
 	list_for_each_entry(of_fixup, &of_fixup_list, list) {
-		ret = of_fixup->fixup(barebox_fdt);
+		ret = of_fixup->fixup(fdt);
 		if (ret)
-			return NULL;
+			return ret;
 	}
 
-	return barebox_fdt;
+	return 0;
 }
 
+struct fdt_header *of_get_fixed_tree(void)
+{
+	int ret;
+
+	if (!barebox_fdt)
+		return NULL;
+	ret = of_fix_tree(barebox_fdt);
+	if (ret)
+		return NULL;
+	return barebox_fdt;
+}
diff --git a/include/of.h b/include/of.h
index c2661ef..609b3b5 100644
--- a/include/of.h
+++ b/include/of.h
@@ -8,6 +8,7 @@ extern struct fdt_header *barebox_fdt;
 int fdt_print(struct fdt_header *working_fdt, const char *pathp);
 
 struct fdt_header *of_get_fixed_tree(void);
+int of_fix_tree(struct fdt_header *fdt);
 int of_register_fixup(int (*fixup)(struct fdt_header *));
 
 int fdt_find_and_setprop(struct fdt_header *fdt, const char *node, const char *prop,
-- 
1.7.7.3