Bjørn Mork <bjorn@xxxxxxx> writes: > Maybe we should add a WARN_ON(!MAJOR(devt)) or similar to > device_destroy() to prevent similar future problems? No, that's definitely not a good idea. We have examples like drivers/tty/vt/vt.c which (ab)use the devt with zero major and a unique minor to keep track of devices. So forget about any warning. But the device_destroy's with a static MKDEV(0,0) should be removed. Bjørn