diff --git a/include/linux/irq.h b/include/linux/irq.h
index ac9634286f42a729c0aeac52f217efc8c7152207..2110f46fcafa6950c915a0bac9a0e97bc71faea0 100644
--- a/include/linux/irq.h
+++ b/include/linux/irq.h
@@ -617,18 +617,11 @@ int __irq_alloc_descs(int irq, unsigned int from, unsigned int cnt, int node,
 	irq_alloc_descs(-1, from, cnt, node)
 
 void irq_free_descs(unsigned int irq, unsigned int cnt);
-int irq_reserve_irqs(unsigned int from, unsigned int cnt);
-
 static inline void irq_free_desc(unsigned int irq)
 {
 	irq_free_descs(irq, 1);
 }
 
-static inline int irq_reserve_irq(unsigned int irq)
-{
-	return irq_reserve_irqs(irq, 1);
-}
-
 #ifdef CONFIG_GENERIC_IRQ_LEGACY_ALLOC_HWIRQ
 unsigned int irq_alloc_hwirqs(int cnt, int node);
 static inline unsigned int irq_alloc_hwirq(int node)
diff --git a/kernel/irq/irqdesc.c b/kernel/irq/irqdesc.c
index 24029348729baef69dc547383cf5d729e3c1c69c..d514ed6080e1cf2ae3cb74d5f9e01a53f40e42b1 100644
--- a/kernel/irq/irqdesc.c
+++ b/kernel/irq/irqdesc.c
@@ -454,31 +454,6 @@ void irq_free_hwirqs(unsigned int from, int cnt)
 EXPORT_SYMBOL_GPL(irq_free_hwirqs);
 #endif
 
-/**
- * irq_reserve_irqs - mark irqs allocated
- * @from:	mark from irq number
- * @cnt:	number of irqs to mark
- *
- * Returns 0 on success or an appropriate error code
- */
-int irq_reserve_irqs(unsigned int from, unsigned int cnt)
-{
-	unsigned int start;
-	int ret = 0;
-
-	if (!cnt || (from + cnt) > nr_irqs)
-		return -EINVAL;
-
-	mutex_lock(&sparse_irq_lock);
-	start = bitmap_find_next_zero_area(allocated_irqs, nr_irqs, from, cnt, 0);
-	if (start == from)
-		bitmap_set(allocated_irqs, start, cnt);
-	else
-		ret = -EEXIST;
-	mutex_unlock(&sparse_irq_lock);
-	return ret;
-}
-
 /**
  * irq_get_next_irq - get next allocated irq number
  * @offset:	where to start the search