On Sun, 19 Dec 2010, Larry Finger wrote: > On 12/19/2010 10:03 PM, Alan Stern wrote: > > I posted the USB debug messages from runs with the statement > writel(control & OHCI_CTRL_MASK, base + OHCI_CONTROL); from > quirk_usb_handoff_ohci() disabled and enabled. > > Any suggestions on further debugging would be appreciated. The statement you removed takes the controller out of the OPERATIONAL state and puts it into the RESET state. This action should be undone by the following lines in ohci_run(): /* start controller operations */ ohci->hc_control &= OHCI_CTRL_RWC; ohci->hc_control |= OHCI_CONTROL_INIT | OHCI_USB_OPER; ohci_writel (ohci, ohci->hc_control, &ohci->regs->control); This should put the controller back into the OPERATIONAL state. You should compare the controller state after executing these lines, with and without the pci-quirks.c statement. 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
