diff --git a/drivers/irqchip/irq-loongson-eiointc.c b/drivers/irqchip/irq-loongson-eiointc.c
index 4f5e6d21d77d..c7ddebf312ad 100644
--- a/drivers/irqchip/irq-loongson-eiointc.c
+++ b/drivers/irqchip/irq-loongson-eiointc.c
@@ -93,19 +93,15 @@ static int eiointc_set_irq_affinity(struct irq_data *d, const struct cpumask *af
 	unsigned int cpu;
 	unsigned long flags;
 	uint32_t vector, regaddr;
-	struct cpumask intersect_affinity;
 	struct eiointc_priv *priv = d->domain->host_data;
 
 	raw_spin_lock_irqsave(&affinity_lock, flags);
 
-	cpumask_and(&intersect_affinity, affinity, cpu_online_mask);
-	cpumask_and(&intersect_affinity, &intersect_affinity, &priv->cpuspan_map);
-
-	if (cpumask_empty(&intersect_affinity)) {
+	cpu = cpumask_first_and_and(&priv->cpuspan_map, affinity, cpu_online_mask);
+	if (cpu >= nr_cpu_ids) {
 		raw_spin_unlock_irqrestore(&affinity_lock, flags);
 		return -EINVAL;
 	}
-	cpu = cpumask_first(&intersect_affinity);
 
 	vector = d->hwirq;
 	regaddr = EIOINTC_REG_ENABLE + ((vector >> 5) << 2);