On Tue, 8 Sep 2015, Geert Uytterhoeven wrote:
> 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+rene...@glider.be>
> ---
> 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 0670ab4e3897bf61..457d22c09e352d56 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);
Are you sure that this does not make lockdep unhappy due to lock
nesting?
Thanks,
tglx
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