diff --git a/net/wireguard/compat/compat.h b/net/wireguard/compat/compat.h
index a549927ddeeb..8e47d4c4a296 100644
--- a/net/wireguard/compat/compat.h
+++ b/net/wireguard/compat/compat.h
@@ -316,35 +316,6 @@ static inline void rng_is_initialized_callback(struct random_ready_callback *cb)
 	atomic_set(rdy->rng_state, 2);
 	kfree(rdy);
 }
-static inline bool rng_is_initialized(void)
-{
-	static atomic_t rng_state = ATOMIC_INIT(0);
-
-	if (atomic_read(&rng_state) == 2)
-		return true;
-
-	if (atomic_cmpxchg(&rng_state, 0, 1) == 0) {
-		int ret;
-		struct rng_is_initialized_callback *rdy = kmalloc(sizeof(*rdy), GFP_ATOMIC);
-		if (!rdy) {
-			atomic_set(&rng_state, 0);
-			return false;
-		}
-		rdy->cb.owner = THIS_MODULE;
-		rdy->cb.func = rng_is_initialized_callback;
-		rdy->rng_state = &rng_state;
-		ret = add_random_ready_callback(&rdy->cb);
-		if (ret)
-			kfree(rdy);
-		if (ret == -EALREADY) {
-			atomic_set(&rng_state, 2);
-			return true;
-		} else if (ret)
-			atomic_set(&rng_state, 0);
-		return false;
-	}
-	return false;
-}
 #elif LINUX_VERSION_CODE < KERNEL_VERSION(4, 2, 0)
 /* This is a disaster. Without this API, we really have no way of
  * knowing if it's initialized. We just return that it has and hope