Re: [PATCH 2.6.21-rc1] powerpc: Make of_device_uevent() compatible withibmebus
From: Joachim Fenkes
Date: Mon Feb 19 2007 - 11:36:45 EST
Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx> wrote on 17.02.2007
> > > Doh ! You are creating an of_device with no attached device-node ?
> > > is totally evil ! Why do you need that ?
> > The driver creates a fake "ibmebus" device so all ibmebus based
> > have
> > a common parent device -- the vio bus does the same.
> > What do you think about linking this device to the device tree "/"
> > All
> > ibmebus-based devices are linked to dt nodes residing directly beneath
> > "/",
> > so the mapping would fit.
> No. If you do that, it shouldn't be an of_device based device.
> If you want then to be below a common parent, then create that parent of
> a basic struct device type, that sort of thing. You should never
> instanciate an of_device that has a NULL device node.
If I make the root device a basic struct device, it can't be part of
longer. If we could create a busless device, we wouldn't have a problem,
doubt that is possible.
Do you have any creative ideas?
> It's a generic problem with sysfs, I agree it somewhat sucks.
Joachim Fenkes -- eHCA Linux Driver Developer and Hardware Tamer
IBM Deutschland Entwicklung GmbH -- Dept. 3627 (I/O Firmware Development
Schoenaicher Strasse 220 -- 71032 Boeblingen -- Germany
eMail: fenkes@xxxxxxxxxx -- Phone: +49 7031 16 1239
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