linux-kernel - Re: [PATCH v2 1/2] powerpc/8xx: Fix NR_IRQ bugs and refactor 8xx interrupt controller

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Date:	Tue, 24 Apr 2012 17:04:48 -0500
From:	Scott Wood <scottwood@...escale.com>
To:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
CC:	Joakim Tjernlund <joakim.tjernlund@...nsmode.se>,
	<linuxppc-dev@...ts.ozlabs.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 1/2] powerpc/8xx: Fix NR_IRQ bugs and refactor 8xx
 interrupt controller

On 04/24/2012 06:22 AM, Benjamin Herrenschmidt wrote:
> On Tue, 2012-04-24 at 09:41 +0200, Joakim Tjernlund wrote:
>> Benjamin Herrenschmidt <benh@...nel.crashing.org> wrote on 2012/04/24 05:13:15:
>>>
>>> On Mon, 2012-04-23 at 16:30 -0600, Grant Likely wrote:
>>>> The mpc8xx driver uses a reference to NR_IRQS that is buggy.  It uses
>>>> NR_IRQs for the array size of the ppc_cached_irq_mask bitmap, but
>>>> NR_IRQs could be smaller than the number of hardware irqs that
>>>> ppc_cached_irq_mask tracks.
>>>
>>> Joakim, any chance you can test this ASAP ? :-)
>>
>> Sorry, but no.  We have not moved our 8xx boards to 3.x as it in maintenance
>> and takes too much space.
> 
> Ah ok... Anybody else on the list who still has some 8xx gear ?

Boots OK on ep88xc.

-Scott

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