linux-kernel - Re: [PATCH] Driver Core: Add platform device arch data V3

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Date:	Thu, 25 Jun 2009 08:30:35 -0700
From:	Greg KH <gregkh@...e.de>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
Cc:	Kevin Hilman <khilman@...prootsystems.com>,
	Magnus Damm <magnus.damm@...il.com>,
	linux-kernel@...r.kernel.org, paul@...an.com,
	stern@...land.harvard.edu, linux-pm@...ts.linux-foundation.org
Subject: Re: [PATCH] Driver Core: Add platform device arch data V3

On Thu, Jun 25, 2009 at 04:35:43PM +0200, Rafael J. Wysocki wrote:
> On Thursday 18 June 2009, Kevin Hilman wrote:
> > Magnus Damm <magnus.damm@...il.com> writes:
> > 
> > > From: Magnus Damm <damm@...l.co.jp>
> > >
> > > Allow architecture specific data in struct platform_device V3.
> > >
> > > With this patch struct pdev_archdata is added to struct
> > > platform_device, similar to struct dev_archdata in found in
> > > struct device. Useful for architecture code that needs to
> > > keep extra data associated with each platform device.
> > >
> > > Struct pdev_archdata is different from dev.platform_data, the
> > > convention is that dev.platform_data points to driver-specific
> > > data. It may or may not be required by the driver. The format
> > > of this depends on driver but is the same across architectures.
> > >
> > > The structure pdev_archdata is a place for architecture specific
> > > data. This data is handled by architecture specific code (for
> > > example runtime PM), and since it is architecture specific it
> > > should _never_ be touched by device driver code. Exactly like
> > > struct dev_archdata but for platform devices.
> > >
> > > Signed-off-by: Magnus Damm <damm@...l.co.jp>
> > 
> > Since there is no 'Feature-desired-by:' tag, I'll addd
> > 
> > Acked-by: Kevin Hilman <khilman@...prootsystems.com>
> > 
> > For PM on ARM in general, and OMAP in particular we definitely need a
> > generic way to handle arch-specific data per platform_device.
> 
> Greg, is this patch fine with you?

Yes:
	Acked-by: Greg Kroah-Hartman <gregkh@...e.de>

thanks,

greg k-h
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