Re: [PATCH] USB: add new USB PhidgetServo driver

[Oliver Neukum <oliver@neukum.org>]

Am Donnerstag, 29. April 2004 21:16 schrieb Greg KH:
> On Thu, Apr 29, 2004 at 09:10:21PM +0200, Oliver Neukum wrote:
> > Am Donnerstag, 29. April 2004 20:49 schrieb Bryan Small:
> > > The IFkit ( both 8/8/8 and 0/8/8) and the TextLCD will work nearly the
> > > same as Sean's servo control. They will use sysfs also. They will be
> >
> > I don't want to spoil the party, but in which way is using sysfs in this
> > way different from using it as a form of devfs?
>
> 	- one value per file, no char or block nodes
> 	- devices can export many different files depending on their
> 	  needs (no ioctl crud needed.)
> 	- you can use a script or libsysfs a web browser, or anything
> 	  else that reads directory trees and files to access the device
> 	  info.
> 	- you can have as many devices as you want in the system, no
> 	  limitations on minor numbers, or anything else.
> 	- no unsolvable kernel race and locking issues
> 	- no horribly formatted code from a developer who is no longer
> 	  maintaining it.
>
> Shall I go on?  :)

Yes. You are describing a better devfs, but still devfs. Why not go
the whole way?

	Regards
		Oliver