On Thu, Dec 22, 2005 at 08:12:02PM +0000, James Courtier-Dutton wrote: > Randy.Dunlap wrote: > >> > >>Load ehci-hcd OR ohci-hcd, but not both at the same time. > > > > > >What's the reasoning for that? > > > >EHCI needs a "companion" controller and driver (like > >UHCI or OHCI) for non-high-speed devices. > > > > Since when?
Ok, there is one case where this isn't true, when a USB 1.1 device sits behind a USB 2.0 hub. In that case the USB 2.0 controller (ehci-hcd) drives the usb 1.1 devices, thanks to the magic goodness in the USB 2.0 hub. And that case is where Linux doesn't work very well, and I don't recommend it for anyone just yet. There were patches posted to the linux-usb-devel mailing list yesterday working on this issue, so hopefully it will be soon fixed. Hope this helps clear things up. greg k-h ------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Do you grep through log files for problems? Stop! Download the new AJAX search engine that makes searching your log files as easy as surfing the web. DOWNLOAD SPLUNK! http://ads.osdn.com/?ad_id=7637&alloc_id=16865&op=click _______________________________________________ linux-usb-devel@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
