irqchip/renesas-intc-irqpin: Propagate wake-up settings to parent

The renesas-intc-irqpin interrupt controller is cascaded to the GIC, but
its driver doesn't propagate wake-up settings to the parent interrupt
controller.

Since commit aec89ef ("irqchip/gic: Enable SKIP_SET_WAKE and
MASK_ON_SUSPEND"), the GIC driver masks interrupts during suspend, and
wake-up through gpio-keys now fails on r8a7740/armadillo and
sh73a0/kzm9g.

Fix this by propagating wake-up settings to the parent interrupt
controller. There's no need to handle irq_set_irq_wake() failures, as
the renesas-intc-irqpin interrupt controller is always cascaded to a
GIC, and the GIC driver always sets SKIP_SET_WAKE since the
aforementioned commit.

Signed-off-by: Geert Uytterhoeven <[email protected]>
Cc: Sudeep Holla <[email protected]>
Cc: Magnus Damm <[email protected]>
Cc: Jason Cooper <[email protected]>
Cc: Marc Zyngier <[email protected]>
Link: http://lkml.kernel.org/r/1441731636-17610-2-git-send-email-geert%[email protected]
Signed-off-by: Thomas Gleixner <[email protected]>
(cherry picked from commit f4e209c)
Signed-off-by: Simon Horman <[email protected]>

Author: geertu

drivers/irqchip/irq-renesas-intc-irqpin.c

@@ -283,6 +283,9 @@ static int intc_irqpin_irq_set_type(struct irq_data *d, unsigned int type)
 static int intc_irqpin_irq_set_wake(struct irq_data *d, unsigned int on)
 {
 	struct intc_irqpin_priv *p = irq_data_get_irq_chip_data(d);
+	int hw_irq = irqd_to_hwirq(d);
+
+	irq_set_irq_wake(p->irq[hw_irq].requested_irq, on);
 
 	if (!p->clk)
 		return 0;