linux-kernel - Re: [PATCH v6 04/22] of: add function to allow probing a device from a OF node

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Message-ID: <20151022235419.GF29919@sirena.org.uk>
Date:	Fri, 23 Oct 2015 08:54:19 +0900
From:	Mark Brown <broonie@...nel.org>
To:	Tomeu Vizoso <tomeu.vizoso@...labora.com>
Cc:	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Rob Herring <robh+dt@...nel.org>,
	Stephen Warren <swarren@...dotorg.org>,
	Javier Martinez Canillas <javier@....samsung.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Thierry Reding <thierry.reding@...il.com>,
	Alan Stern <stern@...land.harvard.edu>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	Linus Walleij <linus.walleij@...aro.org>,
	linux-acpi@...r.kernel.org, Arnd Bergmann <arnd@...db.de>
Subject: Re: [PATCH v6 04/22] of: add function to allow probing a device from
 a OF node

On Thu, Oct 22, 2015 at 03:03:37PM +0200, Tomeu Vizoso wrote:
> On 22 October 2015 at 03:06, Rafael J. Wysocki <rjw@...ysocki.net> wrote:

> > Same question as from Greg: How does a subsystem know whether or not to use
> > this function?

> Maybe I don't understand the comment, but as the commit message says,
> subsystems can use this when looking up resources for drivers. Or you
> mean that this information should be in the API docs?

I'm pretty sure what he's suggesting here is changing to "should always"
(ie, explain the situations when a subsystem would do this, including
decision criteria if it's optional).

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