From: Frank Rowand <frank.rowand@xxxxxxxxxxxxxx>
of_find_node_by_path() is borked because of_allnodes is not guaranteed to
contain the root of the tree after using any of the dynamic update functions
because some other nodes ends up as of_allnodes.
Fixes: c22e650e66b8 of: Make of_find_node_by_path() handle /aliases
Reported-by: pantelis.antoniou@xxxxxxxxxxxx
Signed-off-by: Frank Rowand <frank.rowand@xxxxxxxxxxxxxx>
---
v2:
Remove change to function header, no longer needed.
Remove BUG_ON(), no longer needed.
Add np as np->parent->allnext instead of np->parent->allnext, as suggested
by Grant Likely.
drivers/of/base.c | 4 2 + 2 - 0 !
1 file changed, 2 insertions(+), 2 deletions(-)
Index: b/drivers/of/base.c
===================================================================
--- a/drivers/of/base.c
+++ b/drivers/of/base.c
@@ -1960,9 +1960,9 @@ int of_attach_node(struct device_node *n
raw_spin_lock_irqsave(&devtree_lock, flags);
np->sibling = np->parent->child;
- np->allnext = of_allnodes;
+ np->allnext = np->parent->allnext;
+ np->parent->allnext = np;
np->parent->child = np;
- of_allnodes = np;
of_node_clear_flag(np, OF_DETACHED);
raw_spin_unlock_irqrestore(&devtree_lock, flags);
--
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