diff --git a/include/linux/irqdomain.h b/include/linux/irqdomain.h
index 77bf7d84c67371b3d3f53168c1213f3582b5bac5..5701a8b01726be4cc71ecfa6910fadd35a3ee446 100644
--- a/include/linux/irqdomain.h
+++ b/include/linux/irqdomain.h
@@ -387,8 +387,6 @@ extern int irq_domain_associate(struct irq_domain *domain, unsigned int irq,
 extern void irq_domain_associate_many(struct irq_domain *domain,
 				      unsigned int irq_base,
 				      irq_hw_number_t hwirq_base, int count);
-extern void irq_domain_disassociate(struct irq_domain *domain,
-				    unsigned int irq);
 
 extern unsigned int irq_create_mapping(struct irq_domain *host,
 				       irq_hw_number_t hwirq);
diff --git a/kernel/irq/irqdomain.c b/kernel/irq/irqdomain.c
index 9c9cb8829f7a5f90fc669c73ad8a8fd508c7447a..3d7463fd64532f0de86ccd685d79cf84436a5df8 100644
--- a/kernel/irq/irqdomain.c
+++ b/kernel/irq/irqdomain.c
@@ -496,7 +496,7 @@ static void irq_domain_set_mapping(struct irq_domain *domain,
 	}
 }
 
-void irq_domain_disassociate(struct irq_domain *domain, unsigned int irq)
+static void irq_domain_disassociate(struct irq_domain *domain, unsigned int irq)
 {
 	struct irq_data *irq_data = irq_get_irq_data(irq);
 	irq_hw_number_t hwirq;