1 files changed, 18 insertions, 1 deletions

diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c
index 27f4332c7f84..ae216824e8ca 100644
--- a/kernel/irq/chip.c
+++ b/kernel/irq/chip.c
@@ -985,6 +985,23 @@ int irq_chip_set_affinity_parent(struct irq_data *data,
 }
 
 /**
+ * irq_chip_set_type_parent - Set IRQ type on the parent interrupt
+ * @data:       Pointer to interrupt specific data
+ * @type:       IRQ_TYPE_{LEVEL,EDGE}_* value - see include/linux/irq.h
+ *
+ * Conditional, as the underlying parent chip might not implement it.
+ */
+int irq_chip_set_type_parent(struct irq_data *data, unsigned int type)
+{
+        data = data->parent_data;
+
+        if (data->chip->irq_set_type)
+                return data->chip->irq_set_type(data, type);
+
+        return -ENOSYS;
+}
+
+/**
  * irq_chip_retrigger_hierarchy - Retrigger an interrupt in hardware
  * @data:       Pointer to interrupt specific data
  *
@@ -997,7 +1014,7 @@ int irq_chip_retrigger_hierarchy(struct irq_data *data)
                 if (data->chip && data->chip->irq_retrigger)
                         return data->chip->irq_retrigger(data);
 
-        return -ENOSYS;
+        return 0;
 }
 
 /**