Hi Krzysztof, On Wed, Mar 08, 2017 at 10:00:55AM +0100, Krzysztof Opasiak wrote: > > Descriptors says that it's bulk so now question is if it uses > streams or not. Check your driver or USB traffic. > I just grep'ed usb_alloc_streams in the driver, nothing appeared. So it should be just bulk, correct me if I'm wrong. I'm studying the dummy_hcd patch, overwhelmed... And by USB traffic, I tried usbmon. It'd be good if it has an additional "bulk streams" urb type. Thanks, Yuyang -- 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