Drop the redundant extern keyword from function declarations in the
subsystem header file to improve readability (and make it easier to spot
the global variables).
Signed-off-by: Johan Hovold <johan@xxxxxxxxxx>
---
include/linux/usb/serial.h | 81 +++++++++++++++++---------------------
1 file changed, 36 insertions(+), 45 deletions(-)
diff --git a/include/linux/usb/serial.h b/include/linux/usb/serial.h
index 4becca7ae264..6d756d03f46f 100644
--- a/include/linux/usb/serial.h
+++ b/include/linux/usb/serial.h
@@ -315,19 +315,19 @@ struct usb_serial_driver {
#define to_usb_serial_driver(d) \
container_of(d, struct usb_serial_driver, driver)
-extern int usb_serial_register_drivers(struct usb_serial_driver *const serial_drivers[],
+int usb_serial_register_drivers(struct usb_serial_driver *const serial_drivers[],
const char *name, const struct usb_device_id *id_table);
-extern void usb_serial_deregister_drivers(struct usb_serial_driver *const serial_drivers[]);
-extern void usb_serial_port_softint(struct usb_serial_port *port);
+void usb_serial_deregister_drivers(struct usb_serial_driver *const serial_drivers[]);
+void usb_serial_port_softint(struct usb_serial_port *port);
-extern int usb_serial_suspend(struct usb_interface *intf, pm_message_t message);
-extern int usb_serial_resume(struct usb_interface *intf);
+int usb_serial_suspend(struct usb_interface *intf, pm_message_t message);
+int usb_serial_resume(struct usb_interface *intf);
/* USB Serial console functions */
#ifdef CONFIG_USB_SERIAL_CONSOLE
-extern void usb_serial_console_init(int minor);
-extern void usb_serial_console_exit(void);
-extern void usb_serial_console_disconnect(struct usb_serial *serial);
+void usb_serial_console_init(int minor);
+void usb_serial_console_exit(void);
+void usb_serial_console_disconnect(struct usb_serial *serial);
#else
static inline void usb_serial_console_init(int minor) { }
static inline void usb_serial_console_exit(void) { }
@@ -335,40 +335,32 @@ static inline void usb_serial_console_disconnect(struct usb_serial *serial) {}
#endif
/* Functions needed by other parts of the usbserial core */
-extern struct usb_serial_port *usb_serial_port_get_by_minor(unsigned int minor);
-extern void usb_serial_put(struct usb_serial *serial);
-extern int usb_serial_generic_open(struct tty_struct *tty,
- struct usb_serial_port *port);
-extern int usb_serial_generic_write_start(struct usb_serial_port *port,
- gfp_t mem_flags);
-extern int usb_serial_generic_write(struct tty_struct *tty,
- struct usb_serial_port *port, const unsigned char *buf, int count);
-extern void usb_serial_generic_close(struct usb_serial_port *port);
-extern int usb_serial_generic_resume(struct usb_serial *serial);
-extern int usb_serial_generic_write_room(struct tty_struct *tty);
-extern int usb_serial_generic_chars_in_buffer(struct tty_struct *tty);
-extern void usb_serial_generic_wait_until_sent(struct tty_struct *tty,
- long timeout);
-extern void usb_serial_generic_read_bulk_callback(struct urb *urb);
-extern void usb_serial_generic_write_bulk_callback(struct urb *urb);
-extern void usb_serial_generic_throttle(struct tty_struct *tty);
-extern void usb_serial_generic_unthrottle(struct tty_struct *tty);
-extern int usb_serial_generic_tiocmiwait(struct tty_struct *tty,
- unsigned long arg);
-extern int usb_serial_generic_get_icount(struct tty_struct *tty,
- struct serial_icounter_struct *icount);
-extern int usb_serial_generic_register(void);
-extern void usb_serial_generic_deregister(void);
-extern int usb_serial_generic_submit_read_urbs(struct usb_serial_port *port,
- gfp_t mem_flags);
-extern void usb_serial_generic_process_read_urb(struct urb *urb);
-extern int usb_serial_generic_prepare_write_buffer(struct usb_serial_port *port,
- void *dest, size_t size);
+struct usb_serial_port *usb_serial_port_get_by_minor(unsigned int minor);
+void usb_serial_put(struct usb_serial *serial);
+int usb_serial_generic_open(struct tty_struct *tty, struct usb_serial_port *port);
+int usb_serial_generic_write_start(struct usb_serial_port *port, gfp_t mem_flags);
+int usb_serial_generic_write(struct tty_struct *tty, struct usb_serial_port *port,
+ const unsigned char *buf, int count);
+void usb_serial_generic_close(struct usb_serial_port *port);
+int usb_serial_generic_resume(struct usb_serial *serial);
+int usb_serial_generic_write_room(struct tty_struct *tty);
+int usb_serial_generic_chars_in_buffer(struct tty_struct *tty);
+void usb_serial_generic_wait_until_sent(struct tty_struct *tty, long timeout);
+void usb_serial_generic_read_bulk_callback(struct urb *urb);
+void usb_serial_generic_write_bulk_callback(struct urb *urb);
+void usb_serial_generic_throttle(struct tty_struct *tty);
+void usb_serial_generic_unthrottle(struct tty_struct *tty);
+int usb_serial_generic_tiocmiwait(struct tty_struct *tty, unsigned long arg);
+int usb_serial_generic_get_icount(struct tty_struct *tty, struct serial_icounter_struct *icount);
+int usb_serial_generic_register(void);
+void usb_serial_generic_deregister(void);
+int usb_serial_generic_submit_read_urbs(struct usb_serial_port *port, gfp_t mem_flags);
+void usb_serial_generic_process_read_urb(struct urb *urb);
+int usb_serial_generic_prepare_write_buffer(struct usb_serial_port *port, void *dest, size_t size);
#if defined(CONFIG_USB_SERIAL_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
-extern int usb_serial_handle_sysrq_char(struct usb_serial_port *port,
- unsigned int ch);
-extern int usb_serial_handle_break(struct usb_serial_port *port);
+int usb_serial_handle_sysrq_char(struct usb_serial_port *port, unsigned int ch);
+int usb_serial_handle_break(struct usb_serial_port *port);
#else
static inline int usb_serial_handle_sysrq_char(struct usb_serial_port *port, unsigned int ch)
{
@@ -380,13 +372,12 @@ static inline int usb_serial_handle_break(struct usb_serial_port *port)
}
#endif
-extern void usb_serial_handle_dcd_change(struct usb_serial_port *usb_port,
- struct tty_struct *tty,
- unsigned int status);
+void usb_serial_handle_dcd_change(struct usb_serial_port *usb_port,
+ struct tty_struct *tty, unsigned int status);
-extern int usb_serial_bus_register(struct usb_serial_driver *device);
-extern void usb_serial_bus_deregister(struct usb_serial_driver *device);
+int usb_serial_bus_register(struct usb_serial_driver *device);
+void usb_serial_bus_deregister(struct usb_serial_driver *device);
extern struct bus_type usb_serial_bus_type;
extern struct tty_driver *usb_serial_tty_driver;
--
2.26.2
