menu "Userspace I/O" depends on !S390 config UIO tristate "Userspace I/O drivers" default n help Enable this to allow the userspace driver core code to be built. This code allows userspace programs easy access to kernel interrupts and memory locations, allowing some drivers to be written in userspace. Note that a small kernel driver is also required for interrupt handling to work properly. If you don't know what to do here, say N. endmenu