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

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Message-ID: <5200FC09.7080108@ahsoftware.de>
Date:	Tue, 06 Aug 2013 15:37:13 +0200
From:	Alexander Holler <holler@...oftware.de>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
CC:	Pantelis Antoniou <panto@...oniou-consulting.com>,
	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

Am 06.08.2013 12:14, schrieb Greg Kroah-Hartman:

>> 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.

MFD uses platform devices too.

Regards,

Alexander Holler

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