8 #define MOD_INC_USE_COUNT (usecount = usecount + 1) 9 #define MOD_DEC_USE_COUNT (usecount = usecount - 1) 10 #define MOD_IN_USE (usecount != 0) 13 #define MAJOR_NUMBER 42 int register_chrdev(unsigned int, const char *)
int unregister_chrdev(unsigned int, const char *)