diff options
Diffstat (limited to 'include/linux/tty_driver.h')
| -rw-r--r-- | include/linux/tty_driver.h | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/include/linux/tty_driver.h b/include/linux/tty_driver.h index 2c5c35c4656..ba891dd2355 100644 --- a/include/linux/tty_driver.h +++ b/include/linux/tty_driver.h @@ -253,6 +253,7 @@ struct tty_operations { struct tty_driver { int magic; /* magic number for this structure */ + struct kref kref; /* Reference management */ struct cdev cdev; struct module *owner; const char *driver_name; @@ -266,7 +267,6 @@ struct tty_driver { short subtype; /* subtype of tty driver */ struct ktermios init_termios; /* Initial termios */ int flags; /* tty driver flags */ - int refcount; /* for loadable tty drivers */ struct proc_dir_entry *proc_entry; /* /proc fs entry */ struct tty_driver *other; /* only used for the PTY driver */ @@ -288,12 +288,19 @@ struct tty_driver { extern struct list_head tty_drivers; -struct tty_driver *alloc_tty_driver(int lines); -void put_tty_driver(struct tty_driver *driver); -void tty_set_operations(struct tty_driver *driver, +extern struct tty_driver *alloc_tty_driver(int lines); +extern void put_tty_driver(struct tty_driver *driver); +extern void tty_set_operations(struct tty_driver *driver, const struct tty_operations *op); extern struct tty_driver *tty_find_polling_driver(char *name, int *line); +extern void tty_driver_kref_put(struct tty_driver *driver); +extern inline struct tty_driver *tty_driver_kref_get(struct tty_driver *d) +{ + kref_get(&d->kref); + return d; +} + /* tty driver magic number */ #define TTY_DRIVER_MAGIC 0x5402 |