linux-kernel - Re: [PATCH 1/4] pinctrl: rockchip: Set wake

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Date:	Mon, 20 Oct 2014 17:15:21 -0700
From:	Chris Zhong <zyw@...k-chips.com>
To:	Doug Anderson <dianders@...omium.org>,
	Linus Walleij <linus.walleij@...aro.org>,
	Heiko Stuebner <heiko@...ech.de>
CC:	Sonny Rao <sonnyrao@...omium.org>,
	linux-rockchip@...ts.infradead.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/4] pinctrl: rockchip: Set wake_enabled

Tested-by: Chris Zhong <zyw@...k-chips.com>

On 10/20/2014 04:27 PM, Doug Anderson wrote:
> The rockchip pinctrl driver uses irq_gc_set_wake() but doesn't setup
> the .wake_enabled member.  That means that we can never actually use a
> pin for wakeup.  When "irq_set_irq_wake()" tries to call through it
> will always get a failure from set_irq_wake_real() and will then set
> wake_depth to 0.  Assuming you can resume you'll later get an error
> message about "Unbalanced IRQ x wake disable".
>
> Signed-off-by: Doug Anderson <dianders@...omium.org>
> ---
>   drivers/pinctrl/pinctrl-rockchip.c | 1 +
>   1 file changed, 1 insertion(+)
>
> diff --git a/drivers/pinctrl/pinctrl-rockchip.c b/drivers/pinctrl/pinctrl-rockchip.c
> index 016f457..230d8f3 100644
> --- a/drivers/pinctrl/pinctrl-rockchip.c
> +++ b/drivers/pinctrl/pinctrl-rockchip.c
> @@ -1563,6 +1563,7 @@ static int rockchip_interrupts_register(struct platform_device *pdev,
>   		gc->chip_types[0].chip.irq_unmask = irq_gc_mask_set_bit;
>   		gc->chip_types[0].chip.irq_set_wake = irq_gc_set_wake;
>   		gc->chip_types[0].chip.irq_set_type = rockchip_irq_set_type;
> +		gc->wake_enabled = IRQ_MSK(bank->nr_pins);
>   
>   		irq_set_handler_data(bank->irq, bank);
>   		irq_set_chained_handler(bank->irq, rockchip_irq_demux);

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