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Subject[PATCH 2/2] of: unittest: treat missing of_root as error instead of fixing up
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From: Frank Rowand <frank.rowand@sony.com>

setup_of() now ensures that of_root node is populated with the
root of a default devicetree. Remove the unittest code that
created of_root if it was missing. Verify that of_root is
valid before attempting to attach the testcase-data subtree.

Signed-off-by: Frank Rowand <frank.rowand@sony.com>
---
drivers/of/unittest.c | 16 ++++++----------
1 file changed, 6 insertions(+), 10 deletions(-)

diff --git a/drivers/of/unittest.c b/drivers/of/unittest.c
index 7f6bba18c515..9d106998c1f2 100644
--- a/drivers/of/unittest.c
+++ b/drivers/of/unittest.c
@@ -1469,20 +1469,16 @@ static int __init unittest_data_add(void)
return -EINVAL;
}

- if (!of_root) {
- of_root = unittest_data_node;
- for_each_of_allnodes(np)
- __of_attach_node_sysfs(np);
- of_aliases = of_find_node_by_path("/aliases");
- of_chosen = of_find_node_by_path("/chosen");
- of_overlay_mutex_unlock();
- return 0;
- }
-
EXPECT_BEGIN(KERN_INFO,
"Duplicate name in testcase-data, renamed to \"duplicate-name#1\"");

/* attach the sub-tree to live tree */
+ if (!of_root) {
+ pr_warn("%s: no live tree to attach sub-tree\n", __func__);
+ kfree(unittest_data);
+ return -ENODEV;
+ }
+
np = unittest_data_node->child;
while (np) {
struct device_node *next = np->sibling;
--
Frank Rowand <frank.rowand@sony.com>
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