linux-kernel - Re: [PATCH] ARM: exynos: move exynos4210-combiner to drivers/irqchip

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Date:	Thu, 14 Feb 2013 08:25:04 -0600
From:	Rob Herring <robherring2@...il.com>
To:	Doug Anderson <dianders@...omium.org>
CC:	Olof Johansson <olof@...om.net>, arm@...nel.org,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	Rob Herring <rob.herring@...xeda.com>,
	Kukjin Kim <kgene.kim@...sung.com>,
	Russell King <linux@....linux.org.uk>,
	Thomas Gleixner <tglx@...utronix.de>,
	linux-samsung-soc@...r.kernel.org
Subject: Re: [PATCH] ARM: exynos: move exynos4210-combiner to drivers/irqchip

On 02/13/2013 12:51 PM, Doug Anderson wrote:
> Rob / Olof,
> 
> On Tue, Feb 12, 2013 at 2:52 PM, Olof Johansson <olof@...om.net> wrote:
>> On Tue, Feb 12, 2013 at 04:04:52PM -0600, Rob Herring wrote:
>>> From: Rob Herring <rob.herring@...xeda.com>
>>>
>>> Exynos boot is broken with commit 0529e315 (ARM: use common irqchip_init
>>> for GIC init). This commit split the irqchip initialization into 2 calls
>>> to of_irq_init. This does not work because of_irq_init requires interrupt
>>> parents to be in the match list.
>>>
>>> Rather than reverting exynos changes, make it do the proper thing by using
>>> IRQCHIP_DECLARE. This requires moving the combiner code to drivers/irqchip.
>>>
>>> Reported-by: Doug Anderson <dianders@...omium.org>
>>> Signed-off-by: Rob Herring <rob.herring@...xeda.com>
>>> Cc: Kukjin Kim <kgene.kim@...sung.com>
>>> Cc: Russell King <linux@....linux.org.uk>
>>> Cc: Thomas Gleixner <tglx@...utronix.de>
>>> Cc: linux-samsung-soc@...r.kernel.org
>>> ---
>>>
>>> I thought there may be other platforms broken in the same way, but I
>>> checked and exynos is the only one.
>>>
>>> This is based on my gic/vic irqchip branch in arm-soc.
>>
>> Applied to next/cleanup.
> 
> I synced up to next-20130213 and the problem is fixed.  :)  ...that
> label doesn't exactly boot but the problems are unrelated to this
> problem now (there are problems with the OF conversions to raw
> spinlocks)...
> 

That should be fixed, but may not be in -next yet. It is in Grant's tree.

Rob

> I haven't done any review of this code (I'm assuming that Olof already
> looked it over and Samsung engineers will give it a thorough review),
> but it's definitely tested.  :)
> 
> Tested-by: Doug Anderson <dianders@...omium.org>
> 
> Thanks!
> 
> -Doug
> 

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