linux-kernel - Re: [PATCH 5/5] arm: omap: Proper cleanups for omap

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Date:	Tue, 6 Aug 2013 18:14:21 +0800
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	Pantelis Antoniou <panto@...oniou-consulting.com>
Cc:	Tony Lindgren <tony@...mide.com>,
	Russell King <linux@....linux.org.uk>,
	Benoît Coussno <b-cousson@...com>,
	Paul Walmsley <paul@...an.com>,
	Sourav Poddar <sourav.poddar@...com>,
	Russ Dill <Russ.Dill@...com>, Felipe Balbi <balbi@...com>,
	Koen Kooi <koen@...cuitco.com>, linux-omap@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 5/5] arm: omap: Proper cleanups for omap_device

On Tue, Aug 06, 2013 at 12:37:25PM +0300, Pantelis Antoniou wrote:
> > I don't like this at all, sorry.
> > 
> 
> Don't shoot the messenger please...
> 
> This is all about fixing a crash without messing too many things.

I understand, it's not your fault at all.

> > And I was waiting for the day when people started to finally remove
> > platform devices from the system, I always thought it would never work
> > properly.  Good luck with this, I think you have a lot of work ahead of
> > yourself...
> > 
> 
> I know.
> 
> Platform device removal is the wild-wild west...
> 
> If I had to make a wish, would be to kill platform_device completely and
> integrate all it's functionality in the the vanilla device.

YES!!!!

> What exactly is a platform device anyway?

Originally it was a "something that wasn't connected to a bus, but just
had memory-mapped i/o."  Like the PS2 keyboard controller.

Embedded systems got ahold of this and went to town, and made everything
a platform device because they could, and no one was paying attention.

Then OF came along and used it as well, and you know the rest...

I think we need to get the ACPI and OF people, and me, in a room
together at the kernel summit and not let us out until we have this all
worked out.

thanks,

greg k-h
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