On Wed, 20 Jan 2010, Lennart Sorensen wrote: > On Wed, Jan 20, 2010 at 11:37:07AM -0500, Alan Stern wrote: > > It's true that the USB controllers appear to be the only devices using > > IRQ 5. But your startup log shows that only two of the three > > controllers have an associated driver. Maybe the third controller is > > generating the unwanted interrupts? > > Could be. But I never saw the problem with 2.6.26. That's puzzling me. > > Now I think the 3rd controller may be a client mode interface on the > Geode LX, which I certainly don't use if it has such a thing. > > I know what EHCI and OHCI mean. I don't know what UDC is. I see mention > of UDC under USB gadget support. I will try enabling that driver and > see what it does. "UDC" stands for "USB Device Controller". It is for use in device mode, as opposed to host mode (i.e., you could plug that controller into a regular PC and then use the Geode as a USB peripheral). It's possible that some change in the PCI setup is allowing that controller to generate interrupts whereas before it didn't. Or this could be a total red herring. Alan Stern -- 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
