cache_hit:
                        debug_atomic_inc(&chain_lookup_hits);
                        if (very_verbose(class))
-                               printk("\nhash chain already cached, key: %016Lx tail class: [%p] %s\n", chain_key, class->key, class->name);
+                               printk("\nhash chain already cached, key: "
+                                       "%016Lx tail class: [%p] %s\n",
+                                       (unsigned long long)chain_key,
+                                       class->key, class->name);
                        return 0;
                }
        }
        if (very_verbose(class))
-               printk("\nnew hash chain, key: %016Lx tail class: [%p] %s\n", chain_key, class->key, class->name);
+               printk("\nnew hash chain, key: %016Lx tail class: [%p] %s\n",
+                       (unsigned long long)chain_key, class->key, class->name);
        /*
         * Allocate a new chain entry from the static array, and add
         * it to the hash: