1 #include <linux/types.h>
2 #include <linux/kdev_t.h>
3 Hoje: 12 bits major, 20 bits minor
8 register_chrdev_region(dev_t f, unsigned int n, char *name);
9 alloc_chrdev_region(dev_t *d, unsigned int fm, unsigned int n, char *name);
10 unregister_chrdev_region(dev_t f, int n);