On Tue, 21 Jul 2009, Manuel Lauss wrote: > > The patch below will certainly remove the warning; the question is > > whether ehci-hcd will continue to work correctly. Some testing would > > be appreciated. In particular, try to set up the conditions that would > > cause the warning, and afterward do "rmmod ehci-hcd". That should > > cause any remaining errors to surface. > > This is what I get. Additionally, after re-inserting ehci-hcd I get no more > responses from the ACM device, although it is correctly detected. Other > devices (mouse, usb storage) continue to work. > > # rmmod ehci_hcd > au1xxx-ehci au1xxx-ehci.0: remove, state 1 > usb usb2: USB disconnect, address 1 > usb 2-1: USB disconnect, address 2 > usb 2-1.2: USB disconnect, address 3 > au1xxx-ehci au1xxx-ehci.0: dma_pool_destroy ehci_qtd, 8714f000 busy > au1xxx-ehci au1xxx-ehci.0: dma_pool_destroy ehci_qh, 871b9000 busy > au1xxx-ehci au1xxx-ehci.0: USB bus 2 deregistered This clearly is not working right, but I can't tell exactly what's wrong. Can you repeat the test, this time acquiring a usbmon trace starting before the test and ending after the rmmod? You'll have to use usbmon's 0u file, so try to minimize any other USB activity going on at the same time. As for why the device doesn't work when you reload ehci-hcd, I have no idea. That's a separate matter and we can deal with it later. Maybe fixing the first problem will also fix the second. 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
