On Wed, Feb 15, 2012 at 10:32:43PM -0700, Grant Likely wrote:
...
> That's a bug then. The implementation should work without patch 24. Does
> this patch fix it?
>
Yes, it fixes the problem for me.
Regards,
Shawn
> ---
>
> diff --git a/kernel/irq/irqdomain.c b/kernel/irq/irqdomain.c
> index 2c1d6f8..2d3dfff 100644
> --- a/kernel/irq/irqdomain.c
> +++ b/kernel/irq/irqdomain.c
> @@ -516,8 +516,8 @@ unsigned int irq_find_mapping(struct irq_domain *domain,
> return irq_domain_legacy_revmap(domain, hwirq);
>
> /* Slow path does a linear search of the map */
> - if (hint < NUM_ISA_INTERRUPTS)
> - hint = NUM_ISA_INTERRUPTS;
> + if (hint == 0)
> + hint = 1;
> i = hint;
> do {
> struct irq_data *data = irq_get_irq_data(i);
> @@ -525,7 +525,7 @@ unsigned int irq_find_mapping(struct irq_domain *domain,
> return i;
> i++;
> if (i >= irq_virq_count)
> - i = NUM_ISA_INTERRUPTS;
> + i = 1
> } while(i != hint);
> return 0;
> }
>
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