linux-kernel - Re: [PATCH] mfd: fix a bug in the asic3 irq demux code

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Message-Id: <20080702105303.990e6395.akpm@linux-foundation.org>
Date:	Wed, 2 Jul 2008 10:53:03 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Philipp Zabel <philipp.zabel@...il.com>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Samuel Ortiz <sameo@...nedhand.com>
Subject: Re: [PATCH] mfd: fix a bug in the asic3 irq demux code

On Wed, 02 Jul 2008 19:42:53 +0200 Philipp Zabel <philipp.zabel@...il.com> wrote:

> Wrong irq numbers were given to desc->handle_irq, which
> on some devices caused endless loops (asic3_irq_demux
> calling itself, basically).
> 
> Signed-off-by: Philipp Zabel <philipp.zabel@...il.com>
> ---
>  drivers/mfd/asic3.c |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
> 
> diff --git a/drivers/mfd/asic3.c b/drivers/mfd/asic3.c
> index 8e41130..59ec9c6 100644
> --- a/drivers/mfd/asic3.c
> +++ b/drivers/mfd/asic3.c
> @@ -308,7 +308,7 @@ static void asic3_irq_demux(unsigned int irq, struct irq_desc *desc)
>  		for (i = ASIC3_NUM_GPIOS; i < ASIC3_NR_IRQS; i++) {
>  			/* They start at bit 4 and go up */
>  			if (status & (1 << (i - ASIC3_NUM_GPIOS + 4))) {
> -				desc = irq_desc +  + i;
> +				desc = irq_desc + asic->irq_base + i;
>  				desc->handle_irq(asic->irq_base + i,
>  						 desc);
>  			}

hm, I seem to have a pile of mfd patches.  I'll look to offload those
on Samuel.

Samuel, will you be setting up an MFD git tree for linux-next?  (You
should, please).
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