linux-kernel - Re: [PATCH 3/9] irq: convert generic-chip to use irq

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Date:	Wed, 14 Dec 2011 14:14:28 -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 3/9] irq: convert generic-chip to use irq_domain

On Wed, Dec 14, 2011 at 8:28 AM, Rob Herring <robherring2@...il.com> wrote:
> From: Rob Herring <rob.herring@...xeda.com>
>
> Add irq domain support to irq generic-chip. This enables users of
> generic-chip to support dynamic irq assignment needed for DT interrupt
> binding. Users must be converted to use irq_data.hwirq for determining
> local interrupt numbers rather than using the Linux irq number.
>
> irq_base is kept for now as there are a few users of it. Once they
> are converted to use the irq domain, it can be removed.
>
> Signed-off-by: Rob Herring <rob.herring@...xeda.com>
> Cc: Thomas Gleixner <tglx@...utronix.de>
> ---
>  include/linux/irq.h       |    2 +-
>  kernel/irq/Kconfig        |    1 +
>  kernel/irq/generic-chip.c |   57 ++++++++++++++++++++++++++++----------------
>  3 files changed, 38 insertions(+), 22 deletions(-)
>
> diff --git a/include/linux/irq.h b/include/linux/irq.h
> index bff29c5..9ba8a30 100644
> --- a/include/linux/irq.h
> +++ b/include/linux/irq.h
> @@ -664,7 +664,7 @@ struct irq_chip_generic {
>        raw_spinlock_t          lock;
>        void __iomem            *reg_base;
>        unsigned int            irq_base;
> -       unsigned int            irq_cnt;
> +       struct irq_domain       *domain;

Instead of making domain a pointer, why not embed the structure inside
irq_chip_generic?  I don't see a reason for keeping it separate.

After changing that you can add my Acked-by for this patch.

g.


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