Re: Improving kernel -> userspace (usbfs) usb device hand off

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On Fri, Jun 10, 2011 at 11:13:21PM -0500, Theodore Kilgore wrote:
> Well, I guess I have not kept up with the latest. It didn't used to do 
> that. I still can't help wondering if isochronous transport through libusb 
> would really work for webcam application, though, because userspace access 
> to a piece of hardware will almost surely be less direct than kernel 
> access. Sort of by instinct, I would say that there would be too many 
> layers of code one on top of the other.

People have been running USB video cameras for years (i.e. 2.4 days)
using usbfs as a userspace driver just fine, and libusb really isn't
that "thick" at all so it should be very possible to do this.

thanks,

greg k-h
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