linux-kernel - Re: [PATCH] pxa3xx: fix PXA GPIO IRQ handling

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Date:	Tue, 18 Jan 2011 12:47:12 +0100
From:	Lars-Peter Clausen <lars@...afoo.de>
To:	Sven Neumann <s.neumann@...mfeld.com>
CC:	Thomas Gleixner <tglx@...utronix.de>,
	Daniel Mack <daniel@...aq.de>, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH] pxa3xx: fix PXA GPIO IRQ handling

On 01/18/2011 09:18 AM, Sven Neumann wrote:
> From: Lars-Peter Clausen <lars@...afoo.de>
> 
> Set the "set_wake" field of the irq_chip struct before calling
> set_irq_chip() for all of the IRQs, so that the compat handler
> actually gets installed.
> 
> Tested-by: Sven Neumann <s.neumann@...mfeld.com>

Signed-off-by: Lars-Peter Clausen <lars@...afoo.de>

> ---
>  arch/arm/mach-pxa/irq.c    |    7 ++++---
>  arch/arm/mach-pxa/pxa3xx.c |    4 ++--
>  2 files changed, 6 insertions(+), 5 deletions(-)
> 
> diff --git a/arch/arm/mach-pxa/irq.c b/arch/arm/mach-pxa/irq.c
> index 1beb40f..a5b42a7 100644
> --- a/arch/arm/mach-pxa/irq.c
> +++ b/arch/arm/mach-pxa/irq.c
> @@ -111,13 +111,13 @@ static void __init pxa_init_low_gpio_irq(set_wake_t fn)
>  	GRER0 &= ~0x3;
>  	GEDR0 = 0x3;
>  
> +	pxa_low_gpio_chip.set_wake = fn;
> +
>  	for (irq = IRQ_GPIO0; irq <= IRQ_GPIO1; irq++) {
>  		set_irq_chip(irq, &pxa_low_gpio_chip);
>  		set_irq_handler(irq, handle_edge_irq);
>  		set_irq_flags(irq, IRQF_VALID);
>  	}
> -
> -	pxa_low_gpio_chip.set_wake = fn;
>  }
>  
>  void __init pxa_init_irq(int irq_nr, set_wake_t fn)
> @@ -142,13 +142,14 @@ void __init pxa_init_irq(int irq_nr, set_wake_t fn)
>  	/* only unmasked interrupts kick us out of idle */
>  	ICCR = 1;
>  
> +	pxa_internal_irq_chip.set_wake = fn;
> +
>  	for (irq = PXA_IRQ(0); irq < PXA_IRQ(irq_nr); irq++) {
>  		set_irq_chip(irq, &pxa_internal_irq_chip);
>  		set_irq_handler(irq, handle_level_irq);
>  		set_irq_flags(irq, IRQF_VALID);
>  	}
>  
> -	pxa_internal_irq_chip.set_wake = fn;
>  	pxa_init_low_gpio_irq(fn);
>  }
>  
> diff --git a/arch/arm/mach-pxa/pxa3xx.c b/arch/arm/mach-pxa/pxa3xx.c
> index 276e8fb..5a8fe5c 100644
> --- a/arch/arm/mach-pxa/pxa3xx.c
> +++ b/arch/arm/mach-pxa/pxa3xx.c
> @@ -567,13 +567,13 @@ static void __init pxa_init_ext_wakeup_irq(set_wake_t fn)
>  {
>  	int irq;
>  
> +	pxa_ext_wakeup_chip.set_wake = fn;
> +
>  	for (irq = IRQ_WAKEUP0; irq <= IRQ_WAKEUP1; irq++) {
>  		set_irq_chip(irq, &pxa_ext_wakeup_chip);
>  		set_irq_handler(irq, handle_edge_irq);
>  		set_irq_flags(irq, IRQF_VALID);
>  	}
> -
> -	pxa_ext_wakeup_chip.set_wake = fn;
>  }
>  
>  void __init pxa3xx_init_irq(void)

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