[V9 PATCH 1/2] genirq: Add irq_chip_set_type_parent function

[<suravee.suthikulpanit@amd.com>]

From: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com>

Add a helper function to set irq type in parent irq domain.

Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
---
 include/linux/irq.h |  1 +
 kernel/irq/chip.c   | 10 ++++++++++
 2 files changed, 11 insertions(+)

diff --git a/include/linux/irq.h b/include/linux/irq.h
index 6159256..e3952fa 100644
--- a/include/linux/irq.h
+++ b/include/linux/irq.h
@@ -440,6 +440,7 @@ extern void irq_chip_ack_parent(struct irq_data *data);
 extern void irq_chip_mask_parent(struct irq_data *data);
 extern void irq_chip_unmask_parent(struct irq_data *data);
 extern void irq_chip_eoi_parent(struct irq_data *data);
+extern int irq_chip_set_type_parent(struct irq_data *data, unsigned int type);
 extern int irq_chip_set_affinity_parent(struct irq_data *data,
 				const struct cpumask *dest, bool force);
 extern int irq_chip_retrigger_hierarchy(struct irq_data *data);
diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c
index 0ecc270..b24eca3 100644
--- a/kernel/irq/chip.c
+++ b/kernel/irq/chip.c
@@ -847,6 +847,16 @@ void irq_chip_eoi_parent(struct irq_data *data)
 	data->chip->irq_eoi(data);
 }
 
+int irq_chip_set_type_parent(struct irq_data *data, unsigned int type)
+{
+	data = data->parent_data;
+
+	if (data->chip && data->chip->irq_set_type)
+		return data->chip->irq_set_type(data, type);
+
+	return -ENOSYS;
+}
+
 int irq_chip_set_affinity_parent(struct irq_data *data,
 				 const struct cpumask *dest, bool force)
 {
-- 
1.9.3