diff --git a/include/linux/irq.h b/include/linux/irq.h
index 494d328f7051..5ad10948ea95 100644
--- a/include/linux/irq.h
+++ b/include/linux/irq.h
@@ -1009,7 +1009,6 @@ void irq_gc_mask_clr_bit(struct irq_data *d);
 void irq_gc_unmask_enable_reg(struct irq_data *d);
 void irq_gc_ack_set_bit(struct irq_data *d);
 void irq_gc_ack_clr_bit(struct irq_data *d);
-void irq_gc_mask_disable_reg_and_ack(struct irq_data *d);
 void irq_gc_mask_disable_and_ack_set(struct irq_data *d);
 void irq_gc_eoi(struct irq_data *d);
 int irq_gc_set_wake(struct irq_data *d, unsigned int on);
diff --git a/kernel/irq/generic-chip.c b/kernel/irq/generic-chip.c
index ec5fe9a0cb05..c26c5bb6b491 100644
--- a/kernel/irq/generic-chip.c
+++ b/kernel/irq/generic-chip.c
@@ -134,22 +134,6 @@ void irq_gc_ack_clr_bit(struct irq_data *d)
 	irq_gc_unlock(gc);
 }
 
-/**
- * irq_gc_mask_disable_reg_and_ack - Mask and ack pending interrupt
- * @d: irq_data
- */
-void irq_gc_mask_disable_reg_and_ack(struct irq_data *d)
-{
-	struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
-	struct irq_chip_type *ct = irq_data_get_chip_type(d);
-	u32 mask = d->mask;
-
-	irq_gc_lock(gc);
-	irq_reg_writel(gc, mask, ct->regs.mask);
-	irq_reg_writel(gc, mask, ct->regs.ack);
-	irq_gc_unlock(gc);
-}
-
 /**
  * irq_gc_mask_disable_and_ack_set - Mask and ack pending interrupt
  * @d: irq_data