linux-kernel - Re: [PATCH 26/47] Driver core: add groups support to struct device

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Date:	Tue, 26 Sep 2006 17:18:57 +0200
From:	Marcel Holtmann <marcel@...tmann.org>
To:	Greg KH <greg@...ah.com>
Cc:	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Kay Sievers <kay.sievers@...y.org>,
	linux-kernel@...r.kernel.org, Linus Torvalds <torvalds@...l.org>,
	Andrew Morton <akpm@...l.org>
Subject: Re: [PATCH 26/47] Driver core: add groups support to struct device

Hi Greg,

> > I really disappointed that there was no discussion/review of the
> > implementation at all.
> 
> There has not been any real implementation yet, only a few patches added
> to the core that add a few extra functionality to struct device to allow
> class_device to move that way.  The patches that move the subsystems
> over will be discussed (and some already have, like networking), when
> they are ready.  Right now most of that work is being done by Kay and
> myself as a proof of concept to make sure that we can do this properly
> and that userspace can handle it well.

if you look at the Bluetooth subsystem, it became real devices in the
2.6.18 release. I was using a platform device for the virtual and UART
based adapters with no parent, but I am gonna change this to the virtual
devices once it is upstream. It works beautiful and the /sys/class is
now only a fast entry point to find the devices.

Regards

Marcel


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