[tip:irq/urgent] irqchip/renesas-intc-irqpin: Propagate wake-up settings to parent

[tip-bot for Geert Uytterhoeven]

Commit-ID:  f4e209cdc7a00f934007f40cf885471799073b0d
Gitweb:     http://git.kernel.org/tip/f4e209cdc7a00f934007f40cf885471799073b0d
Author:     Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
AuthorDate: Tue, 8 Sep 2015 19:00:35 +0200
Committer:  Thomas Gleixner <tglx@xxxxxxxxxxxxx>
CommitDate: Tue, 15 Sep 2015 17:06:29 +0200

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 aec89ef72ba6c944 ("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 <geert+renesas@xxxxxxxxx>
Cc: Sudeep Holla <sudeep.holla@xxxxxxx>
Cc: Magnus Damm <magnus.damm@xxxxxxxxx>
Cc: Jason Cooper <jason@xxxxxxxxxxxxxx>
Cc: Marc Zyngier <marc.zyngier@xxxxxxx>
Link: http://lkml.kernel.org/r/1441731636-17610-2-git-send-email-geert%2Brenesas@xxxxxxxxx
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
---
 drivers/irqchip/irq-renesas-intc-irqpin.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/irqchip/irq-renesas-intc-irqpin.c b/drivers/irqchip/irq-renesas-intc-irqpin.c
index 67797ee..d3546a6 100644
--- a/drivers/irqchip/irq-renesas-intc-irqpin.c
+++ b/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;
--
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