linux-kernel - Re: [PATCH 4/7] iommu/omap: Allow enable/disable even without pdata

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Message-ID: <52B8A8F1.4040906@epfl.ch>
Date:	Mon, 23 Dec 2013 22:19:45 +0100
From:	Florian Vaussard <florian.vaussard@...l.ch>
To:	"Anna, Suman" <s-anna@...com>, Joerg Roedel <joro@...tes.org>,
	Tony Lindgren <tony@...mide.com>,
	Benoît Cousson <bcousson@...libre.com>
CC:	Rob Herring <rob.herring@...xeda.com>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Rob Landley <rob@...dley.net>,
	Grant Likely <grant.likely@...aro.org>,
	Hiroshi Doyu <hdoyu@...dia.com>,
	"iommu@...ts.linux-foundation.org" <iommu@...ts.linux-foundation.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	"linux-doc@...r.kernel.org" <linux-doc@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-omap@...r.kernel.org" <linux-omap@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH 4/7] iommu/omap: Allow enable/disable even without pdata

Hi Suman,

On 12/23/2013 08:05 PM, Anna, Suman wrote:
> Hi Florian,
> 
> On 12/17/2013 06:53 AM, Florian Vaussard wrote:
>> When booting with a devietree, no platform data is provided. Do not
>> prematurely
>> exit iommu_enable() and iommu_disable() in such a case.
> 
> Platform data may still be needed if we were to go with the pdata quirks
> approach for handling resets. You may need to revise the patch
> description then, but the change itself may be ok if supporting only DT
> devices.
> 

Indeed, this should be mentioned in the commit message. I would go for
a pdata-quirk until we have a proper reset-controller.

Regards,

Florian
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