Yang, Libin wrote: > This is from our hardware team: > > "Our EHCI does not have such limitation on ITD and does not preserve > time for async traffic either." > > BTW: What platform are you using? > > Thanks & Regards, > Libin > It is a HP 6735s Laptop. More detailed information in my original post about this problem. BR, Timo -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html