On Thu, 2015-05-07 at 13:51 +0300, Ruslan Bilovol wrote: > Hi Oliver, > > On Thu, May 7, 2015 at 1:11 PM, Oliver Neukum <oneukum@xxxxxxx> wrote: > > On Thu, 2015-05-07 at 12:49 +0300, Ruslan Bilovol wrote: > >> Current usbnet driver rejects setting MTU that is a multiple > >> of USB endpoint's wMaxPacketSize size. However, it may only > >> lead to possible performance degradation but is not so > >> critical that its using should be prohibited. So allow it > >> but also warn user about possible issue. > > > > We have reports about devices reacting badly to ZLPs. > > Unless you have a compelling reasons for this change > > I have to reject it. > > What devices do you mean here: USB network adapters or USB host controllers? The network adapters > If it's just network adapters, then we can create some kind of quirk handling > for them and do not disable this functionality just because some buggy device > can't work with it. No. They are too many. > My device works fine with ZLPs so I want to use this particular MTU under Linux > like I do it under other operation systems. We can have a white list, but the general case is just too dangerous. Sorry Oliver -- 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
