Passmark USB loopback test plugs

Felipe Balbi felipebalbi at
Mon Nov 26 19:20:50 UTC 2007

On Nov 26, 2007 3:13 PM, Greg KH <greg at> wrote:
> On Wed, Nov 21, 2007 at 07:28:03AM -0400, Felipe Balbi wrote:
> > > Again, at first glance, this driver looks like it can be written in
> > > userspace, using usbfs, without any kernel code at all.  That's my main
> > > question.
> >
> > If it can be done completely in userspace with usbfs, I can't see why
> > not. But I can't also see
> > why not putting in the kernel and allowing users to build it as a module.
> If things can be done in userspace, it should be done there, and not
> also as a kernel module.  That is why usb scanners are handled by
> userspace and not from a kernel module, as an example.

yeah... that's right. Hadn't thought that way.

Best Regards,

Felipe Balbi
felipebalbi at

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