On Thu, Mar 25, 2021 at 05:04:25PM +0100, Oliver Neukum wrote: > Am Donnerstag, den 25.03.2021, 11:06 -0400 schrieb Alan Stern: > > > +:c:func:`usb_submit_anchored_urbs` > > > +--------------------------------- > > > + > > > +The URBs contained in anchor are chronologically submitted until > > > > "chronologically" is the wrong word. They are submitted in the order > > of the anchor's list, which is the same as the order that an iterator > > would use. > > OK. "In the same sequence as they were anchored" ? Hmmm. What happens if you submit an anchor's worth of URBs, but then you kill them in the reverse order (which is how you would normally want to cancel a bunch of URBs)? Since each URB gets moved to the end of the anchor's list when it completes, after they are all killed the list will be reversed. So the next time you submit the anchor, the order of URBs will be backward. If some of the URBs completed before they were killed, the order will be mixed up. Of course, if you never use the URBs on an anchor after killing it, this doesn't matter. Alan Stern
