On Wed, 4 Aug 2010, Jeff Chua wrote: > > > One thing I noticed is that your device is running in high speed mode. > > > It should have switched over to SuperSpeed mode after it was reset by > > > the USB core. Can you get it to enumerate as SuperSpeed by plugging the > > > device in after an unload/reload of the xHCI driver? > > > > That may be related to the problem. Perhaps the drive gets confused > > when trying to connect at SuperSpeed, and then falls back to high speed > > and stops working. > > I've tried all sorts of things and combinations with unloading/loading > usb_storage and xhci_hcd. Does this drive work correctly at SuperSpeed on _any_ system (including Windows)? Maybe it's just broken. > Is this what you're looking for? It seems to have problem with the > "short transfer" ... > > > hub 3-0:1.0: unable to enumerate USB device on port 3 > usb 3-1: new SuperSpeed USB device using xhci_hcd and address 2 > xhci_hcd 0000:05:00.0: WARN: short transfer on control ep > xhci_hcd 0000:05:00.0: WARN: short transfer on control ep > xhci_hcd 0000:05:00.0: WARN: short transfer on control ep > xhci_hcd 0000:05:00.0: WARN: short transfer on control ep No; those are normal. 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
