linux-kernel - Re: [RFC PATCH 0/9] dt: dependencies (for deterministic driver initialization order based on the DT)

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Message-ID: <20140822131919.GX21734@leverpostej>
Date:	Fri, 22 Aug 2014 14:19:19 +0100
From:	Mark Rutland <mark.rutland@....com>
To:	Alexander Holler <holler@...oftware.de>
Cc:	Thierry Reding <thierry.reding@...il.com>,
	"grant.likely@...aro.org" <grant.likely@...aro.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	Jon Loeliger <jdl@....com>,
	Russell King <linux@....linux.org.uk>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Rob Herring <robh+dt@...nel.org>,
	Arnd Bergmann <arnd@...db.de>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [RFC PATCH 0/9] dt: dependencies (for deterministic driver
 initialization order based on the DT)

On Thu, Aug 21, 2014 at 08:19:00PM +0100, Alexander Holler wrote:
> Am 21.08.2014 16:02, schrieb Thierry Reding:
> 
> > Anyway, those are all fairly standard reasons for where deferred probe
> > triggers, and since I do like deferred probe for it's simplicity and
> > reliability I'd rather not try to work around it if boot time is all
> > that people are concerned about.
> 
> It's neither simple nor reliable. It's non deterministic brutforcing 
> while making it almost impossible to identify real errors.

It's horrible, yes.

> In my humble opinion the worst way to solve something. I'm pretty sure 
> if I would have suggest such a solution, the maintainer crowd would have 
> eaten me without cooking.

We didn't have a better workable solution at the time. Having a hack
that got boards booting was considered better than not having them boot.
I don't remember people being particularly enthralled by the idea.

Thanks,
Mark.
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