linux-kernel - Re: [PATCH v2] irqdomain: protect macro variable in domain iterators

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Message-ID: <20111202134458.GD2892@localhost.localdomain>
Date:	Fri, 2 Dec 2011 13:44:58 +0000
From:	Dave Martin <dave.martin@...aro.org>
To:	Nicolas Ferre <nicolas.ferre@...el.com>
Cc:	robherring2@...il.com, devicetree-discuss@...ts.ozlabs.org,
	linux-arm-kernel@...ts.infradead.org, grant.likely@...retlab.ca,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] irqdomain: protect macro variable in domain iterators

On Fri, Dec 02, 2011 at 02:30:09PM +0100, Nicolas Ferre wrote:
> Signed-off-by: Nicolas Ferre <nicolas.ferre@...el.com>

Looks OK to me:

Acked-by: Dave Martin <dave.martin@...aro.org>

> ---
> v2: add brackets to each macro variable.
> 
>  include/linux/irqdomain.h |   10 ++++++----
>  1 files changed, 6 insertions(+), 4 deletions(-)
> 
> diff --git a/include/linux/irqdomain.h b/include/linux/irqdomain.h
> index bd4272b..e535063 100644
> --- a/include/linux/irqdomain.h
> +++ b/include/linux/irqdomain.h
> @@ -82,12 +82,14 @@ static inline unsigned int irq_domain_to_irq(struct irq_domain *d,
>  }
>  
>  #define irq_domain_for_each_hwirq(d, hw) \
> -	for (hw = d->hwirq_base; hw < d->hwirq_base + d->nr_irq; hw++)
> +	for ((hw) = (d)->hwirq_base; \
> +	     (hw) < (d)->hwirq_base + (d)->nr_irq; \
> +	     (hw)++)
>  
>  #define irq_domain_for_each_irq(d, hw, irq) \
> -	for (hw = d->hwirq_base, irq = irq_domain_to_irq(d, hw); \
> -	     hw < d->hwirq_base + d->nr_irq; \
> -	     hw++, irq = irq_domain_to_irq(d, hw))
> +	for ((hw) = (d)->hwirq_base, (irq) = irq_domain_to_irq((d), (hw)); \
> +	     (hw) < (d)->hwirq_base + (d)->nr_irq; \
> +	     (hw)++, (irq) = irq_domain_to_irq((d), (hw)))
>  
>  extern void irq_domain_add(struct irq_domain *domain);
>  extern void irq_domain_del(struct irq_domain *domain);
> -- 
> 1.7.5.4
> 
--
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