diff --git a/drivers/irqchip/irq-loongson-pch-pic.c b/drivers/irqchip/irq-loongson-pch-pic.c
index 679e2b68e6e9..46be04d13249 100644
--- a/drivers/irqchip/irq-loongson-pch-pic.c
+++ b/drivers/irqchip/irq-loongson-pch-pic.c
@@ -162,7 +162,7 @@ static int pch_pic_domain_translate(struct irq_domain *d,
 		if (fwspec->param_count < 2)
 			return -EINVAL;
 
-		*hwirq = fwspec->param[0] + priv->ht_vec_base;
+		*hwirq = fwspec->param[0];
 		*type = fwspec->param[1] & IRQ_TYPE_SENSE_MASK;
 	} else {
 		*hwirq = fwspec->param[0] - priv->gsi_base;
@@ -188,7 +188,7 @@ static int pch_pic_alloc(struct irq_domain *domain, unsigned int virq,
 
 	parent_fwspec.fwnode = domain->parent->fwnode;
 	parent_fwspec.param_count = 1;
-	parent_fwspec.param[0] = hwirq;
+	parent_fwspec.param[0] = hwirq + priv->ht_vec_base;
 
 	err = irq_domain_alloc_irqs_parent(domain, virq, 1, &parent_fwspec);
 	if (err)