linux-kernel - Re: [PATCH 2/9] irq: check domain hwirq range for DT translate

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Message-ID: <CACxGe6t6mtPt9LsQ77N06n5gWAAUcswhGNut9O==Drq5CJDMpQ@mail.gmail.com>
Date:	Wed, 14 Dec 2011 09:08:20 -0700
From:	Grant Likely <grant.likely@...retlab.ca>
To:	Rob Herring <robherring2@...il.com>
Cc:	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	devicetree-discuss@...ts.ozlabs.org, shawn.guo@...escale.com,
	Kukjin Kim <kgene.kim@...sung.com>,
	Kevin Hilman <khilman@...com>,
	Tony Lindgren <tony@...mide.com>,
	Barry Song <baohua.song@....com>,
	Linus Walleij <linus.ml.walleij@...il.com>,
	Rob Herring <rob.herring@...xeda.com>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [PATCH 2/9] irq: check domain hwirq range for DT translate

On Wed, Dec 14, 2011 at 8:28 AM, Rob Herring <robherring2@...il.com> wrote:
> From: Rob Herring <rob.herring@...xeda.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@...xeda.com>
> Cc: Thomas Gleixner <tglx@...utronix.de>

Acked-by: Grant Likely <grant.likely@...retlab.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.
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