hgraf wrote:
> Hello everyone,
> 
> I've got an "interesting" problem. I have a linux machine (Ubuntu 7.10)
> with a USB device plugged into it, powered by the USB port.
> 
> There are cases where I'd like to cause the device to re-enumerate. The
> easiest way is just unplugging it and plugging it back in.
> 
> Unfortunately since this machine must be remotely accessible I need a
> way to do the equivalent through software.
> 
> Rebooting the machine is not an option.
> 
> Is there a call in Linux that will cause a USB port to shut down and
> start up again? Alternatively is there a way to cause all of USB to
> re-enumerate, through software?
> 
> I've tried google but can't seem to find what I'm looking for.
> 
> Thanks, TTYL

You have to reload the driver kernel module for the device or possibly
the USB bridge.

You can't shut off power to a USB port through software. (correct me if
I'm wrong)

-
Martin
-- 
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist