On 2013-01-26 15:56, Alan Stern wrote: > That SF bit in the intrstatus register is the one causing the problem, > I think. It is not set in the intrenable register, so the controller > shouldn't issue any IRQs. But it does, nonetheless. Turning off SF > apparently doesn't help -- the controller turns it on again a > millisecond later anyway. > > So it looks like there's nothing we can do about this. It's just bad > hardware. Sorry. So why was this problem introduced on my old hardware after running for years without this issue? This new hardware is just 2-3 months old or so should not have grown extra 'features'. Please explain. Kind regards, Udo -- 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