
<	raw_spin_lock_irqsave(&devtree_lock, flags);
<	pp = __of_find_property(np, name, lenp);
---
>	#define CHECK_NULL(ptr) if (!(ptr)) return NULL
>	CHECK_NULL(np);
>	raw_spin_lock_irqsave(&devtree_lock, flags);
>	pp = __of_find_property(np, name, lenp);
