linux-kernel - Re: [Replacement][PATCH 3/3]

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Date:	Tue, 13 Nov 2012 17:37:25 +0200
From:	Mika Westerberg <mika.westerberg@...ux.intel.com>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
Cc:	mathias.nyman@...ux.intel.com, linux-acpi@...r.kernel.org,
	linux-kernel@...r.kernel.org, lenb@...nel.org,
	rafael.j.wysocki@...el.com, broonie@...nsource.wolfsonmicro.com,
	grant.likely@...retlab.ca, linus.walleij@...aro.org,
	khali@...ux-fr.org, Bjorn Helgaas <bhelgaas@...gle.com>,
	"Moore, Robert" <robert.moore@...el.com>
Subject: Re: [Replacement][PATCH 3/3]

On Tue, Nov 13, 2012 at 04:28:50PM +0100, Rafael J. Wysocki wrote:
> On Tuesday, November 13, 2012 05:18:13 PM Mika Westerberg wrote:
> > On Tue, Nov 13, 2012 at 04:15:51PM +0100, Rafael J. Wysocki wrote:
> > > > Could we change this so that you can pass NULL list as well (provided that
> > > > the preproc is given)?
> > > > 
> > > > This is useful in case when we try to find the SPI/I2C device handle based
> > > > on the ACPI serial bus resource address. In that case we are not interested
> > > > in any other resources (and hence there is no need to allocate memory for
> > > > them etc.)
> > > 
> > > I'd prefer to have a separate helper function for that, if that's not a
> > > problem.  It should be clear when we ask for resources of a given device
> > > and when we only want to poke things like that.
> > 
> > It's not a problem, we can have a separate helper for that.
> 
> OK
> 
> I suppose you can introduce such a helper in the GPIO patch, then? :-)

Actually we don't need that at all - we just need to return 1 from the
preproc function and acpi_dev_get_resources() will skip creating the normal
resources (altough we still need to pass valid resource_list but that is
not a problem).
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