linux-kernel - Re: [PATCH 2.6.21-rc1] powerpc: Make of_device

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Message-ID: <OF8D0E4DD6.8DF18C46-ON85257286.00002C8B-85257286.0001FC97@de.ibm.com>
Date:	Sat, 17 Feb 2007 19:21:42 -0500
From:	Joachim Fenkes <FENKES@...ibm.com>
To:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
Cc:	Hoang-Nam Nguyen <hnguyen@...ux.vnet.ibm.com>, johnrose@...ibm.com,
	linux-kernel@...r.kernel.org, linuxppc-dev@...abs.org,
	paulus@...ba.org, pmac@....ibm.com, Sylvain Munaut <tnt@...tnt.com>
Subject: Re: [PATCH 2.6.21-rc1] powerpc: Make of_device_uevent() compatible	with
 ibmebus

Benjamin Herrenschmidt <benh@...nel.crashing.org> wrote on 17.02.2007 
16:56:39:

> On Sat, 2007-02-17 at 17:28 +0100, Hoang-Nam Nguyen wrote:
> > ibmebus has a fake root device that's not associated with an ofdt 
node.
> > Filter out any such devices in of_device_uevent().
> 
> Doh ! You are creating an of_device with no attached device-node ? That
> is totally evil ! Why do you need that ?

The driver creates a fake "ibmebus" device so all ibmebus based devices 
have
a common parent device -- the vio bus does the same.

What do you think about linking this device to the device tree "/" node? 
All
ibmebus-based devices are linked to dt nodes residing directly beneath 
"/",
so the mapping would fit.

Cheers,
  Joachim

---
Joachim Fenkes  --  eHCA Linux Driver Developer and Hardware Tamer 
extraordinaire
IBM Deutschland Entwicklung GmbH  --  Dept. 3627 (I/O Firmware Development 
2)
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