On 6/14/2014 8:39 PM, Frank Rowand wrote:
> From: Frank Rowand <[email protected]>
>
> 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: [email protected]
> Signed-off-by: Frank Rowand <[email protected]>
> ---
>
> 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
Aaaargh, cut and paste error, that should be:
Add np as np->parent->allnext instead of of_allnodes->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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