On Mo, 2019-04-29 at 12:08 -0400, Alan Stern wrote: > On Mon, 29 Apr 2019, Oliver Neukum wrote: > > > On Mo, 2019-04-29 at 15:06 +0000, David Laight wrote: > > > But the statement the old comment made are no longer correct. > > Perhaps David would be satisfied if the comment were changed to say > that _some_ USB controller drivers have this unusual alignment > requirement. It would seem to me that every controller that does not do scatter/gather has this requirement. In other words, this is the true requirement of USB. It does not come from the controller. It comes from the protocol's need to not send a short package. The second, old, comment is about controllers. Regards Oliver
