[PATCH 2/3] irqchip/irq-pruss-intc: Fix listed IRQ type in /proc/interrupts

[MD Danish Anwar]

From: Grygorii Strashko <grygorii.strashko@xxxxxx>

The PRUSS INTC driver doesn't have .irq_set_type() callback implemented and
supports only IRQ_TYPE_LEVEL_HIGH. This resulted in the IRQ properties not
being updated properly and the PRUSS INTC IRQs were listed incorrectly in
/proc/interrupts as Edge.

Example:
  218:          0  4b220000.interrupt-controller  26 Edge      pru10

Fix this by adding a simple .irq_set_type() implementation which checks the
requested IRQ triggering type.

Fixes: 04e2d1e06978 ("irqchip/irq-pruss-intc: Add a PRUSS irqchip driver for PRUSS interrupts")

Signed-off-by: Grygorii Strashko <grygorii.strashko@xxxxxx>
Signed-off-by: Suman Anna <s-anna@xxxxxx>
Signed-off-by: MD Danish Anwar <danishanwar@xxxxxx>
---
 drivers/irqchip/irq-pruss-intc.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/irqchip/irq-pruss-intc.c b/drivers/irqchip/irq-pruss-intc.c
index 7415817d4c6c..3cf684ede564 100644
--- a/drivers/irqchip/irq-pruss-intc.c
+++ b/drivers/irqchip/irq-pruss-intc.c
@@ -373,6 +373,14 @@ static int pruss_intc_irq_set_irqchip_state(struct irq_data *data,
 	return 0;
 }
 
+static int pruss_intc_irq_irq_set_type(struct irq_data *data, unsigned int type)
+{
+	if (type != IRQ_TYPE_LEVEL_HIGH)
+		return -EINVAL;
+
+	return 0;
+}
+
 static struct irq_chip pruss_irqchip = {
 	.name			= "pruss-intc",
 	.irq_ack		= pruss_intc_irq_ack,
@@ -382,6 +390,7 @@ static struct irq_chip pruss_irqchip = {
 	.irq_release_resources	= pruss_intc_irq_relres,
 	.irq_get_irqchip_state	= pruss_intc_irq_get_irqchip_state,
 	.irq_set_irqchip_state	= pruss_intc_irq_set_irqchip_state,
+	.irq_set_type		= pruss_intc_irq_irq_set_type,
 };
 
 static int pruss_intc_validate_mapping(struct pruss_intc *intc, int event,
-- 
2.34.1