Hi, Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> writes: > On Mon, 4 May 2020, Andrey Konovalov wrote: > >> One more question (sorry for so many :). >> >> Looking at other fields of usb_request struct I see frame_number. >> AFAIU it's filled in by the UDC driver for ISO transfers. Does it make >> sense to expose it to userspace? I don't see any composite/legacy >> gadgets use that field at all. > > Do any of those gadget drivers use isochronous endpoints? > > In fact, it also looks like none of the drivers in gadget/udc/ touch > the frame_number field. Maybe we should just get rid of it, since it > isn't being used. > > Felipe, any preference? It was added for functions to use to tell the UDC which frame they want to start the request, but it was never used. I don't mind removing it. -- balbi
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