On Tue, 17 Jul 2012, Lan Tianyu wrote: > > Why is that? What happens if you power-off a port where the device has > > remove wakeup enabled? > > > I will not power off a port where the device has remote wakeup enabled. > Only when disabled, the port will power off. What about the case where the device is active (not suspended)? Remote wakeup won't be enabled then. Does that mean you're willing to power-down a device when it is active but not when it is suspended (if remote wakeup is enabled)? That doesn't make sense. > > But in general, if a driver needs wakeup in order to work properly then > > it _won't_ work when the port is powered off. So as Oliver says, the > > user might as well unbind the driver first. > You mean userspace app unbind the driver? Yes. > But some devices maybe work > properly when the port power on again and device is resumed. e.g > keyboard and mouse. Userspace can rebind the driver when the port is powered on. 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
