of_phandle_cache_hash
handle_hash = of_phandle_cache_hash(handle);
handle_hash = of_phandle_cache_hash(handle);
if (np->phandle && !phandle_cache[of_phandle_cache_hash(np->phandle)])
phandle_cache[of_phandle_cache_hash(np->phandle)] = np;