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Message-ID: <50241533.3080709@gmail.com>
Date:	Thu, 09 Aug 2012 14:53:23 -0500
From:	Rob Herring <robherring2@...il.com>
To:	Lee Jones <lee.jones@...aro.org>
CC:	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	linus.walleij@...ricsson.com, arnd@...db.de,
	devicetree-discuss@...ts.ozlabs.org,
	broonie@...nsource.wolfsonmicro.com,
	Rob Herring <rob.herring@...xeda.com>,
	STEricsson_nomadik_linux@...t.st.com
Subject: Re: [PATCH 1/8] of/irq: Create stub for of_irq_find_parent when !CONFIG_OF

On 08/09/2012 10:53 AM, Lee Jones wrote:
> of_irq_find_parent is a handy function to use outside the confines of
> the Open Firmware subsystem. One such use-case is when the IRQ Domain
> wishes to find an IRQ domain for a given device node. Currently it can
> not take any notice of the 'interrupt-parent' property. Instead it
> just uses the first IRQ controller as it climbs the Device Tree. If
> we were to use this as a precursor the resultant controller is more
> likely to be correct.
> 
> CC: Rob Herring <rob.herring@...xeda.com>
> CC: devicetree-discuss@...ts.ozlabs.org
> Signed-off-by: Lee Jones <lee.jones@...aro.org>

Acked-by: Rob Herring <rob.herring@...xeda.com>

Rob

> ---
>  include/linux/of_irq.h |    5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/include/linux/of_irq.h b/include/linux/of_irq.h
> index 1717cd9..b8e2411 100644
> --- a/include/linux/of_irq.h
> +++ b/include/linux/of_irq.h
> @@ -83,6 +83,11 @@ static inline unsigned int irq_of_parse_and_map(struct device_node *dev,
>  {
>  	return 0;
>  }
> +
> +static inline void *of_irq_find_parent(struct device_node *child)
> +{
> +	return NULL;
> +}
>  #endif /* !CONFIG_OF */
>  
>  #endif /* __OF_IRQ_H */
> 

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