linux-kernel - Re: [PATCH] genirq: provide dummy set_irq

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Date:	Tue, 14 Apr 2015 13:13:27 +0300
From:	Roger Quadros <rogerq@...com>
To:	<tglx@...utronix.de>
CC:	<cw00.choi@...sung.com>, <balbi@...com>, <tony@...mide.com>,
	<linux-usb@...r.kernel.org>, <linux-omap@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] genirq: provide dummy set_irq_wake()

Hi Thomas,

On 30/03/15 16:15, Roger Quadros wrote:
> Without this system suspend is broken on systems that have
> drivers calling enable/disable_irq_wake() for interrupts based off
> the dummy irq hook.
> (e.g. drivers/gpio/gpio-pcf857x.c)
> 
> http://article.gmane.org/gmane.linux.kernel/1879035
> 
> Signed-off-by: Roger Quadros <rogerq@...com>

Any comments on this patch?

cheers,
-roger

> ---
>  kernel/irq/dummychip.c | 6 ++++++
>  1 file changed, 6 insertions(+)
> 
> diff --git a/kernel/irq/dummychip.c b/kernel/irq/dummychip.c
> index 988dc58..2405d7a 100644
> --- a/kernel/irq/dummychip.c
> +++ b/kernel/irq/dummychip.c
> @@ -32,6 +32,11 @@ static unsigned int noop_ret(struct irq_data *data)
>  	return 0;
>  }
>  
> +static int noop_int_ret(struct irq_data *data, unsigned int val)
> +{
> +	return 0;
> +}
> +
>  /*
>   * Generic no controller implementation
>   */
> @@ -57,5 +62,6 @@ struct irq_chip dummy_irq_chip = {
>  	.irq_ack	= noop,
>  	.irq_mask	= noop,
>  	.irq_unmask	= noop,
> +	.irq_set_wake	= noop_int_ret,
>  };
>  EXPORT_SYMBOL_GPL(dummy_irq_chip);
> 

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