diff --git a/drivers/char/random.c b/drivers/char/random.c
index d4f5d25f1478..4c93f6223054 100644
--- a/drivers/char/random.c
+++ b/drivers/char/random.c
@@ -894,7 +894,7 @@ struct fast_pool {
 	unsigned long pool[4];
 	unsigned long last;
 	unsigned int count;
-	struct work_struct mix;
+	struct timer_list mix;
 };
 
 static DEFINE_PER_CPU(struct fast_pool, irq_randomness) = {
@@ -946,9 +946,9 @@ int __cold random_online_cpu(unsigned int cpu)
 }
 #endif
 
-static void mix_interrupt_randomness(struct work_struct *work)
+static void mix_interrupt_randomness(unsigned long data)
 {
-	struct fast_pool *fast_pool = container_of(work, struct fast_pool, mix);
+	struct fast_pool *fast_pool = (struct fast_pool *)data;
 	/*
 	 * The size of the copied stack pool is explicitly 2 longs so that we
 	 * only ever ingest half of the siphash output each time, retaining
@@ -1000,10 +1000,14 @@ void add_interrupt_randomness(int irq)
 	if (new_count < 1024 && !time_is_before_jiffies(fast_pool->last + HZ))
 		return;
 
-	if (unlikely(!fast_pool->mix.func))
-		INIT_WORK(&fast_pool->mix, mix_interrupt_randomness);
+	if (unlikely(!fast_pool->mix.data))
+		setup_timer(&fast_pool->mix, mix_interrupt_randomness, (unsigned long)fast_pool);
+
 	fast_pool->count |= MIX_INFLIGHT;
-	queue_work_on(raw_smp_processor_id(), system_highpri_wq, &fast_pool->mix);
+	if (!timer_pending(&fast_pool->mix)) {
+		fast_pool->mix.expires = jiffies;
+		add_timer_on(&fast_pool->mix, raw_smp_processor_id());
+	}
 }
 EXPORT_SYMBOL_GPL(add_interrupt_randomness);