nullcnprobe
.cn_probe = nullcnprobe,
.cn_probe = nullcnprobe,
extern void nullcnprobe(struct consdev *);
extern void nullcnprobe(struct consdev *);
extern void nullcnprobe(struct consdev *);
nullcnprobe,
nullcnprobe,
extern void nullcnprobe(struct consdev *);
void nullcnprobe(struct consdev *);
nullcnprobe(&nullcn);