
<   raw_spin_lock_irqsave(&devtree_lock, flags);
<   pp = __of_find_property(np, name, lenp);
<   raw_spin_unlock_irqrestore(&devtree_lock, flags);
---
>   mutex_lock(&devtree_mutex);
>   pp = __of_find_property(np, name, lenp);
>   mutex_unlock(&devtree_mutex);
