[$] A tale of two troublesome drivers

The kernel project merges dozens of drivers with every development cycle,and almost every one of those drivers is entirely uncontroversial.Occasionally, though, a driver submission raises wider questions, leadingto lengthy discussion and, perhaps, opposition. That is currently the casewith two separate drivers, both with ties to the networking subsystem. Oneof them is hung up on questions of whether (and how) all devicefunctionality should be made available to user space, while the other hasrun into turbulence because it drives a device that is unobtainable outsideof a single company.