diff --git a/include/linux/irqdomain.h b/include/linux/irqdomain.h
index 33cacc8af26d..d2c61de208a8 100644
--- a/include/linux/irqdomain.h
+++ b/include/linux/irqdomain.h
@@ -419,12 +419,6 @@ extern int irq_create_strict_mappings(struct irq_domain *domain,
 				      unsigned int irq_base,
 				      irq_hw_number_t hwirq_base, int count);
 
-static inline int irq_create_identity_mapping(struct irq_domain *host,
-					      irq_hw_number_t hwirq)
-{
-	return irq_create_strict_mappings(host, hwirq, hwirq, 1);
-}
-
 extern const struct irq_domain_ops irq_domain_simple_ops;
 
 /* stock xlate functions */
diff --git a/kernel/irq/irqdomain.c b/kernel/irq/irqdomain.c
index d10ab1d689d5..35c5a99f8884 100644
--- a/kernel/irq/irqdomain.c
+++ b/kernel/irq/irqdomain.c
@@ -715,9 +715,6 @@ EXPORT_SYMBOL_GPL(irq_create_mapping_affinity);
  * locations. For use by controllers that already have static mappings
  * to insert in to the domain.
  *
- * Non-linear users can use irq_create_identity_mapping() for IRQ-at-a-time
- * domain insertion.
- *
  * 0 is returned upon success, while any failure to establish a static
  * mapping is treated as an error.
  */