Alan Stern, on dim. 12 mars 2017 21:40:33 -0400, wrote: > On Sun, 12 Mar 2017, Dave Mielke wrote: > > [quoted lines by Alan Stern on 2017/03/12 at 21:31 -0400] > > > > >A device's speed is only partially related to its USB version. A > > >USB-1.1 device can run at low speed or full speed. A USB-2 device can > > >run at low, full, or high speed. And a USB-3 device can run at low, > > >full, high, or Super speed. > > > > Yes, I did know this, so maybe I misunderstood what you were wondering about. > > Were you wondering why 64ms was too long? > > No, I was wondering why an HID device would run at high speed. Both > you and Samuel implied that this was because it was a USB-2 device. > But that is not an adequate answer, because it is perfectly valid for a > USB-2 device to run at full speed. to_usb_device(ddev)->speed really is USB_SPEED_HIGH, otherwise the quirk wouldn't work :) Samuel -- 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
