> > > > > > > In your case, you should not set CONFIG_USB_OTG no matter at defconfig > > and at menuconfig. > > Hmm, at least in my testing (USB mouse/keyboard connected to OTG port), > it works as before even I enable CONFIG_USB_OTG, as long as I do *not* > enable CONFIG_USB_OTG_FSM. > > Since it works for my case, I'm wondering why you think I shouldn't > enable CONFIG_USB_OTG at all. > If your device is not OTG device, there is no reason you need to enable CONFIG_USB_OTG. Yes, it may work for some devices when enable CONFIG_USB_OTG, but it will confuse other host or device which is connected with you, eg, your device will report your have supported some otg capabilities, eg, SRP or HNP. Peter -- 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