On Mon, 11 Jul 2016, Pengcheng Li wrote: > A usb device in the connection state. Then host is suspend and resume. > But the usb device could not be at the right speed. We should be reset > the reset. > > Signed-off-by: Pengcheng Li <lpc.li@xxxxxxxxxxxxx> Why wouldn't the USB device be at the right speed? You should _not_ reset the device if it is at the right speed. > @@ -3512,6 +3512,10 @@ int usb_port_resume(struct usb_device *udev, pm_message_t msg) > } > } > > + retval = hub_port_reset(hub, port1, udev, HUB_ROOT_RESET_TIME, false); > + if (retval < 0) > + hub_port_disable(hub, port1, 0); > + Most of the time (for example, for non-USB3 devices) this would be wrong. 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
