On Wed, May 23, 2012 at 10:52:14AM -0400, Alan Stern wrote: > > generates xfernotready > > to SW, gadget is not ready to send data now. Host is still sending IN > > token and receives 0 byte packet. Gadget becomes ready after an > > *undefined* time. Now it does not have track of micro frame number. > > The Gadget API has a weakness in that it does not give drivers a way to > specify which microframe a particular isochronous packet should belong > to. > > So what happens if an IN packet from the host gets corrupted or lost? > Does all the following isochronous data get shifted back by one > interval, or does some of the data get skipped? The Gadget API doesn't > say. yeah this is something which needs to be sorted out, indeed. But this will only work if controllers give us a reliable way for gadget drivers to ask which uframe we are now, which isn't always the case. Then how do we solve that part ? -- balbi
Attachment:
signature.asc
Description: Digital signature
