tty: remove extern from functions in tty headers

After the recent headers cleanup, some function declarations still have
extern before them. It is superfluous (for function declarations), so
remove extern from those which still have it.

This unifies them with the rest of the files.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Link: https://lore.kernel.org/r/20210914091134.17426-3-jslaby@suse.cz
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 69 insertions, 70 deletions

diff --git a/include/linux/tty.h b/include/linux/tty.h
index 168e57e40bbb..15453b0c4081 100644
--- a/include/linux/tty.h
+++ b/include/linux/tty.h
@@ -252,20 +252,20 @@ static inline bool tty_throttled(struct tty_struct *tty)
 }
 
 #ifdef CONFIG_TTY
-extern void tty_kref_put(struct tty_struct *tty);
-extern struct pid *tty_get_pgrp(struct tty_struct *tty);
-extern void tty_vhangup_self(void);
-extern void disassociate_ctty(int priv);
-extern dev_t tty_devnum(struct tty_struct *tty);
-extern void proc_clear_tty(struct task_struct *p);
-extern struct tty_struct *get_current_tty(void);
+void tty_kref_put(struct tty_struct *tty);
+struct pid *tty_get_pgrp(struct tty_struct *tty);
+void tty_vhangup_self(void);
+void disassociate_ctty(int priv);
+dev_t tty_devnum(struct tty_struct *tty);
+void proc_clear_tty(struct task_struct *p);
+struct tty_struct *get_current_tty(void);
 /* tty_io.c */
-extern int __init tty_init(void);
-extern const char *tty_name(const struct tty_struct *tty);
-extern struct tty_struct *tty_kopen_exclusive(dev_t device);
-extern struct tty_struct *tty_kopen_shared(dev_t device);
-extern void tty_kclose(struct tty_struct *tty);
-extern int tty_dev_name_to_number(const char *name, dev_t *number);
+int __init tty_init(void);
+const char *tty_name(const struct tty_struct *tty);
+struct tty_struct *tty_kopen_exclusive(dev_t device);
+struct tty_struct *tty_kopen_shared(dev_t device);
+void tty_kclose(struct tty_struct *tty);
+int tty_dev_name_to_number(const char *name, dev_t *number);
 #else
 static inline void tty_kref_put(struct tty_struct *tty)
 { }
@@ -296,7 +296,7 @@ static inline int tty_dev_name_to_number(const char *name, dev_t *number)
 
 extern struct ktermios tty_std_termios;
 
-extern int vcs_init(void);
+int vcs_init(void);
 
 extern struct class *tty_class;
 
@@ -316,34 +316,34 @@ static inline struct tty_struct *tty_kref_get(struct tty_struct *tty)
 	return tty;
 }
 
-extern const char *tty_driver_name(const struct tty_struct *tty);
-extern void tty_wait_until_sent(struct tty_struct *tty, long timeout);
-extern void stop_tty(struct tty_struct *tty);
-extern void start_tty(struct tty_struct *tty);
-extern void tty_write_message(struct tty_struct *tty, char *msg);
-extern int tty_send_xchar(struct tty_struct *tty, char ch);
-extern int tty_put_char(struct tty_struct *tty, unsigned char c);
-extern unsigned int tty_chars_in_buffer(struct tty_struct *tty);
-extern unsigned int tty_write_room(struct tty_struct *tty);
-extern void tty_driver_flush_buffer(struct tty_struct *tty);
-extern void tty_unthrottle(struct tty_struct *tty);
-extern int tty_throttle_safe(struct tty_struct *tty);
-extern int tty_unthrottle_safe(struct tty_struct *tty);
-extern int tty_do_resize(struct tty_struct *tty, struct winsize *ws);
-extern int tty_get_icount(struct tty_struct *tty,
-			  struct serial_icounter_struct *icount);
-extern int is_current_pgrp_orphaned(void);
-extern void tty_hangup(struct tty_struct *tty);
-extern void tty_vhangup(struct tty_struct *tty);
-extern int tty_hung_up_p(struct file *filp);
-extern void do_SAK(struct tty_struct *tty);
-extern void __do_SAK(struct tty_struct *tty);
-extern void no_tty(void);
-extern speed_t tty_termios_baud_rate(struct ktermios *termios);
-extern void tty_termios_encode_baud_rate(struct ktermios *termios,
-						speed_t ibaud, speed_t obaud);
-extern void tty_encode_baud_rate(struct tty_struct *tty,
-						speed_t ibaud, speed_t obaud);
+const char *tty_driver_name(const struct tty_struct *tty);
+void tty_wait_until_sent(struct tty_struct *tty, long timeout);
+void stop_tty(struct tty_struct *tty);
+void start_tty(struct tty_struct *tty);
+void tty_write_message(struct tty_struct *tty, char *msg);
+int tty_send_xchar(struct tty_struct *tty, char ch);
+int tty_put_char(struct tty_struct *tty, unsigned char c);
+unsigned int tty_chars_in_buffer(struct tty_struct *tty);
+unsigned int tty_write_room(struct tty_struct *tty);
+void tty_driver_flush_buffer(struct tty_struct *tty);
+void tty_unthrottle(struct tty_struct *tty);
+int tty_throttle_safe(struct tty_struct *tty);
+int tty_unthrottle_safe(struct tty_struct *tty);
+int tty_do_resize(struct tty_struct *tty, struct winsize *ws);
+int tty_get_icount(struct tty_struct *tty,
+		struct serial_icounter_struct *icount);
+int is_current_pgrp_orphaned(void);
+void tty_hangup(struct tty_struct *tty);
+void tty_vhangup(struct tty_struct *tty);
+int tty_hung_up_p(struct file *filp);
+void do_SAK(struct tty_struct *tty);
+void __do_SAK(struct tty_struct *tty);
+void no_tty(void);
+speed_t tty_termios_baud_rate(struct ktermios *termios);
+void tty_termios_encode_baud_rate(struct ktermios *termios, speed_t ibaud,
+		speed_t obaud);
+void tty_encode_baud_rate(struct tty_struct *tty, speed_t ibaud,
+		speed_t obaud);
 
 /**
  *	tty_get_baud_rate	-	get tty bit rates
@@ -363,37 +363,37 @@ static inline speed_t tty_get_baud_rate(struct tty_struct *tty)
 unsigned char tty_get_char_size(unsigned int cflag);
 unsigned char tty_get_frame_size(unsigned int cflag);
 
-extern void tty_termios_copy_hw(struct ktermios *new, struct ktermios *old);
-extern int tty_termios_hw_change(const struct ktermios *a, const struct ktermios *b);
-extern int tty_set_termios(struct tty_struct *tty, struct ktermios *kt);
+void tty_termios_copy_hw(struct ktermios *new, struct ktermios *old);
+int tty_termios_hw_change(const struct ktermios *a, const struct ktermios *b);
+int tty_set_termios(struct tty_struct *tty, struct ktermios *kt);
 
-extern void tty_wakeup(struct tty_struct *tty);
+void tty_wakeup(struct tty_struct *tty);
 
-extern int tty_mode_ioctl(struct tty_struct *tty, struct file *file,
+int tty_mode_ioctl(struct tty_struct *tty, struct file *file,
 			unsigned int cmd, unsigned long arg);
-extern int tty_perform_flush(struct tty_struct *tty, unsigned long arg);
-extern struct tty_struct *tty_init_dev(struct tty_driver *driver, int idx);
-extern void tty_release_struct(struct tty_struct *tty, int idx);
-extern void tty_init_termios(struct tty_struct *tty);
-extern void tty_save_termios(struct tty_struct *tty);
-extern int tty_standard_install(struct tty_driver *driver,
+int tty_perform_flush(struct tty_struct *tty, unsigned long arg);
+struct tty_struct *tty_init_dev(struct tty_driver *driver, int idx);
+void tty_release_struct(struct tty_struct *tty, int idx);
+void tty_init_termios(struct tty_struct *tty);
+void tty_save_termios(struct tty_struct *tty);
+int tty_standard_install(struct tty_driver *driver,
 		struct tty_struct *tty);
 
 extern struct mutex tty_mutex;
 
 /* n_tty.c */
-extern void n_tty_inherit_ops(struct tty_ldisc_ops *ops);
+void n_tty_inherit_ops(struct tty_ldisc_ops *ops);
 #ifdef CONFIG_TTY
-extern void __init n_tty_init(void);
+void __init n_tty_init(void);
 #else
 static inline void n_tty_init(void) { }
 #endif
 
 /* tty_audit.c */
 #ifdef CONFIG_AUDIT
-extern void tty_audit_exit(void);
-extern void tty_audit_fork(struct signal_struct *sig);
-extern int tty_audit_push(void);
+void tty_audit_exit(void);
+void tty_audit_fork(struct signal_struct *sig);
+int tty_audit_push(void);
 #else
 static inline void tty_audit_exit(void)
 {
@@ -408,24 +408,23 @@ static inline int tty_audit_push(void)
 #endif
 
 /* tty_ioctl.c */
-extern int n_tty_ioctl_helper(struct tty_struct *tty, struct file *file,
-		       unsigned int cmd, unsigned long arg);
+int n_tty_ioctl_helper(struct tty_struct *tty, struct file *file,
+		unsigned int cmd, unsigned long arg);
 
 /* vt.c */
 
-extern int vt_ioctl(struct tty_struct *tty,
-		    unsigned int cmd, unsigned long arg);
+int vt_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg);
 
-extern long vt_compat_ioctl(struct tty_struct *tty,
-		     unsigned int cmd, unsigned long arg);
+long vt_compat_ioctl(struct tty_struct *tty, unsigned int cmd,
+		unsigned long arg);
 
 /* tty_mutex.c */
 /* functions for preparation of BKL removal */
-extern void tty_lock(struct tty_struct *tty);
-extern int  tty_lock_interruptible(struct tty_struct *tty);
-extern void tty_unlock(struct tty_struct *tty);
-extern void tty_lock_slave(struct tty_struct *tty);
-extern void tty_unlock_slave(struct tty_struct *tty);
-extern void tty_set_lock_subclass(struct tty_struct *tty);
+void tty_lock(struct tty_struct *tty);
+int  tty_lock_interruptible(struct tty_struct *tty);
+void tty_unlock(struct tty_struct *tty);
+void tty_lock_slave(struct tty_struct *tty);
+void tty_unlock_slave(struct tty_struct *tty);
+void tty_set_lock_subclass(struct tty_struct *tty);
 
 #endif