Re: Is it useful to support user level drivers

[john slee]

On Thu, Jun 21, 2001 at 03:58:33PM +0200, Matthias Urlichs wrote:
> At 23:50 +1000 2001-06-21, john slee wrote:
> >i believe libgpio uses the existing usb/iee1394/serial/parallel
> >interfaces to provide a limited userspace driver capability.
> 
> That only means, however, that the specific kernel drivers explicitly
> support mid-level usermode access.
> 
> They still handle the actual hardware state changes without usermode support.

yes, that was the point.  while it might be a stretch of the "mechanism,
not policy" argument, i like having drivers organized this way.  it
makes a lot of sense for hotpluggable things like usb.

j.

-- 
"Bobby, jiggle Grandpa's rat so it looks alive, please" -- gary larson
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