On Thu, 20 Dec 2007, David Brownell wrote: > On Thursday 20 December 2007, Alan Stern wrote: > > > I also got a report of some USB sticks that didn't like to see the PING > > > packets during EP0 transfers. Now I've got to see whether the USB spec > > > even allows those ... and in any case, how to disable pinging on EP0 > > > when using EHCI. > > > > I think it does allow PINGs during the data stage of a control-OUT > > transfer. And I don't recall seeing anything outlawing PINGs during > > the status stage of a control-IN transfer, although they would be > > almost pointless. > > Could have been yet another bug in that silicon. I think such issues > have been pushing vendors to use EHCI more, even on non-PCI hosts, just > to get better overall quality for high speed host support!
What are the alternatives to EHCI for high-speed host support? Alan Stern - To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
