[PATCH 2/9] irq: check domain hwirq range for DT translate

[Grant Likely]

On Wed, Dec 14, 2011 at 8:28 AM, Rob Herring <robherring2 at gmail.com> wrote:
> From: Rob Herring <rob.herring at calxeda.com>
>
> A DT node may have more than 1 domain associated with it, so make sure
> the hwirq number is within range when doing DT translation.
>
> Signed-off-by: Rob Herring <rob.herring at calxeda.com>
> Cc: Thomas Gleixner <tglx at linutronix.de>

Acked-by: Grant Likely <grant.likely at secretlab.ca>

> ---
>  kernel/irq/irqdomain.c |    3 +++
>  1 files changed, 3 insertions(+), 0 deletions(-)
>
> diff --git a/kernel/irq/irqdomain.c b/kernel/irq/irqdomain.c
> index 200ce83..ae6441e 100644
> --- a/kernel/irq/irqdomain.c
> +++ b/kernel/irq/irqdomain.c
> @@ -135,6 +135,9 @@ int irq_domain_simple_dt_translate(struct irq_domain *d,
>                return -EINVAL;
>        if (intsize < 1)
>                return -EINVAL;
> +       if ((intspec[0] < d->hwirq_base) ||
> +           (intspec[0] >= d->hwirq_base + d->nr_irq))
> +               return -EINVAL;
>
>        *out_hwirq = intspec[0];
>        *out_type = IRQ_TYPE_NONE;
> --
> 1.7.5.4
>



-- 
Grant Likely, B.Sc., P.Eng.
Secret Lab Technologies Ltd.