Re: [PATCH 1/8] of/irq: Create stub for of_irq_find_parent when !CONFIG_OF
From: Rob Herring
Date: Thu Aug 09 2012 - 15:53:27 EST
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@xxxxxxxxxxx>
> CC: devicetree-discuss@xxxxxxxxxxxxxxxx
> Signed-off-by: Lee Jones <lee.jones@xxxxxxxxxx>
Acked-by: Rob Herring <rob.herring@xxxxxxxxxxx>
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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