Re: [RFC][PATCH] Cascaded interrupts: a simple solution

[Benjamin Herrenschmidt]

> Index: linux-work/kernel/irq/manage.c
> ===================================================================
> --- linux-work.orig/kernel/irq/manage.c	2006-05-11 11:45:09.000000000 +1000
> +++ linux-work/kernel/irq/manage.c	2006-05-11 12:00:52.000000000 +1000
> @@ -371,6 +371,13 @@ int request_irq(unsigned int irq,
>  	if (!handler)
>  		return -EINVAL;
>  
> +	/*
> +	 * SA_CASCADE implies SA_INTERRUPT (that is, the demux itself happens
> +	 * with interrupts disabled, the final handler is still called with
> +	 */
> +	if (irqflags & SA_CASCADEIRQ)
> +		irqflags |= SA_INTERRUPT;
> +

Oh and that bit isn't actually necessary ...

Ben.


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