Here are the updated UIO (Userspace I/O driver framework) patches forI have a political question, if I have a user space driver, is my kernel tainted or not? Does this open another multi-month flame war around GPL, BSD, NDA, source available but not GPL, and all the other things we talked to death about inserting non-GPL modules?
2.6.21.
They have been revamped from the last time you have seen them, and they
include a real driver, the Hilscher CIF DeviceNet and Profibus card
controller, which is being used in production systems with this driver
framework right now. The kernel driver they replaced was a total mess,
with over 60+ ioctls to try to control the different aspects of the
device. See the last patch in this series for more details on this
driver.