On 15.06.2012 23:41, Peter Stuge wrote: > Daniel Mack wrote: >> This patch adds an OUT interrupt endpoint to the interface and queues a >> fix number of request to catch SET_REPORT events. According to the >> specs, host drivers should always use the dedicated OUT endpoint when >> present. > > Recently a user needed to use control transfers to communicate with a > HID class interface more frequently than the bInterval => GET_REPORT. > > Same could go for SET_REPORT too of course. I understand the problem, > just saying that there can be good uses for the ep0 requests. Probably, but with a higher rate, you still can't be certain about not loosing a packet in communication. For GET_REPORT, you don't face the same situation, because sending a packet from userspace will actually block until it has been handled and sent out by the controller driver. Daniel -- 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
