static void
usb_power_wdog(void *arg)
{
struct usb_bus *bus = arg;
USB_BUS_LOCK_ASSERT(bus, MA_OWNED);
usb_callout_reset(&bus->power_wdog,
4 * hz, usb_power_wdog, arg);
#ifdef DDB
/*
* The following line of code is only here to recover from
* DDB:
*/
usb_proc_rewakeup(&bus->explore_proc); /* recover from DDB */
#endif
#if USB_HAVE_POWERD
USB_BUS_UNLOCK(bus);
usb_bus_power_update(bus);
USB_BUS_LOCK(bus);
#endif
}
/*------------------------------------------------------------------------*
* usb_handle_remote_wakeup
*
* Returns:
* 0: Success
* Else: Failure
*------------------------------------------------------------------------*/
static usb_error_t
usb_handle_remote_wakeup(struct usb_xfer *xfer, uint8_t is_on)
{
struct usb_device *udev;
struct usb_bus *bus;
udev = xfer->xroot->udev;
bus = udev->bus;
USB_BUS_LOCK(bus);
if (is_on) {
udev->flags.remote_wakeup = 1;
} else {
udev->flags.remote_wakeup = 0;
}
USB_BUS_UNLOCK(bus);
#if USB_HAVE_POWERD
/* In case we are out of sync, update the power state. */
usb_bus_power_update(udev->bus);
#endif
return (0); /* success */
}