On Wed, 22 Oct 2014, Anton Tikhomirov wrote: > > That's right, and it's true for USB-2 as well. A ZLP is needed only in > > cases where the host otherwise wouldn't know the transfer is over, > > i.e., when the transfer length is a nonzero multiple of the maxpacket > > size and is smaller than wLength. > > Shall we use/check struct usb_request's zero flag for this? Of course; we have to. There's no other way for the UDC driver to know whether the transfer is shorter than the host expects. 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
