linux-kernel - Re: [PATCH 0/3] of: dts: enable memory@0 quirk for PPC32 only

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Message-Id: <20140423131720.8C978C408D2@trevor.secretlab.ca>
Date:	Wed, 23 Apr 2014 14:17:20 +0100
From:	Grant Likely <grant.likely@...retlab.ca>
To:	Leif Lindholm <leif.lindholm@...aro.org>
Cc:	Rob Herring <robherring2@...il.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Linaro Patches <patches@...aro.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	linuxppc-dev <linuxppc-dev@...ts.ozlabs.org>,
	Mark Rutland <mark.rutland@....com>
Subject: Re: [PATCH 0/3] of: dts: enable memory@0 quirk for PPC32 only

On Tue, 22 Apr 2014 15:05:26 +0100, Leif Lindholm <leif.lindholm@...aro.org> wrote:
> On Tue, Apr 22, 2014 at 02:08:29PM +0100, Grant Likely wrote:
> > > I would prefer to see a "WARN_ON(!IS_ENABLED(CONFIG_PPC32));" added here.
> > 
> > I completely agree.
> 
> OK. So do we keep this around on unaffected architectures in perpetuity?
> 
> Or can there be some cut-off date when the majority of DT-enabled
> platforms can stop including this workaround which permits new incorrect
> DTs to be implemented so long as they are incorrect in this particular
> way?

I'd be fine with a patch that can enable the workaround selectively for
specific machines. Some people will still hit breakage, but we can fix
that by adding their machine to the quirk list.

g.

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