On Wednesday 02 January 2008, Mike Frysinger wrote: > > > > > > Allow embedded developers to turn support for USB Hubs off even if they > > > have a > > > full root hub. This saves the overhead (RAM and Flash size). > > > > ISTR that it won't save very much code though ... the Linux USB > > stack structures all its enumeration logic around hubs. > > perhaps the code size is arguable as to whether it really matters. > the reason we want it is that we have a USB host controller that will > not work with USB hubs, so we want to make sure the system does not > attempt such things. (yes, such a USB host controller is retarded, > but the decision was out of our hands.)
Well, it won't work with *external* hubs. Root hubs are a different story. :) I think that's one of a class of decisions sometimes made by folk who need to conserve silicon real estate. Supporting external hubs has always been optional for OTG systems. - Dave -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
