Date: Sun, 27 Mar 2005 23:08:53 +0200
From: Dominik Brodowski <linux@dominikbrodowski.net>
To: Adam Belay <abelay@novell.com>
Cc: Greg KH <greg@kroah.com>, Patrick Mochel <mochel@digitalimplant.org>,
       linux-kernel@vger.kernel.org, linux-pm@lists.osdl.org
Subject: Re: [RFC] Some thoughts on device drivers and sysfs
Message-ID: <20050327210853.GA18358@isilmar.linta.de>
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	Adam Belay <abelay@novell.com>, Greg KH <greg@kroah.com>,
	Patrick Mochel <mochel@digitalimplant.org>,
	linux-kernel@vger.kernel.org, linux-pm@lists.osdl.org
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On Sun, Mar 27, 2005 at 02:24:59PM -0500, Adam Belay wrote:
> One of the original design goals of sysfs was to provide a standardized
> location to keep driver configuration attributes.  Although sysfs
> handles this very well for bus devices and class devices, there isn't
> currently a method to export attributes for device drivers and their
> specific bound device instances to userspace.

Drivers can add (e.g. in ->probe) attributes for devices using
extern int device_create_file(struct device *device, struct device_attribute
* entry);
and delete them (e.g. in ->remove) using
extern void device_remove_file(struct device * dev, struct device_attribute
* attr);

and there's also 

extern int driver_create_file(struct device_driver *, struct
driver_attribute *);
extern void driver_remove_file(struct device_driver *, struct
driver_attribute *);


	Dominik
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