Extern or forward variable declaration at include/linux/serdev.h, line 317 References: drivers/tty/serdev/serdev-ttyport.c, line 14 drivers/tty/serdev/serdev-ttyport.c, line 25 drivers/tty/serdev/serdev-ttyport.c, line 48 drivers/tty/serdev/serdev-ttyport.c, line 264 drivers/tty/serdev/serdev-ttyport.c, line 306 drivers/tty/tty_port.c, line 22 drivers/tty/tty_port.c, line 45 drivers/tty/tty_port.c, line 60 drivers/tty/tty_port.c, line 87 drivers/tty/tty_port.c, line 107 drivers/tty/tty_port.c, line 128 drivers/tty/tty_port.c, line 151 drivers/tty/tty_port.c, line 181 drivers/tty/tty_port.c, line 200 drivers/tty/tty_port.c, line 213 drivers/tty/tty_port.c, line 226 drivers/tty/tty_port.c, line 245 drivers/tty/tty_port.c, line 254 drivers/tty/tty_port.c, line 254 drivers/tty/tty_port.c, line 268 drivers/tty/tty_port.c, line 283 drivers/tty/tty_port.c, line 304 drivers/tty/tty_port.c, line 315 drivers/tty/tty_port.c, line 347 drivers/tty/tty_port.c, line 373 drivers/tty/tty_port.c, line 388 drivers/tty/tty_port.c, line 403 drivers/tty/tty_port.c, line 420 drivers/tty/tty_port.c, line 436 drivers/tty/tty_port.c, line 468 drivers/tty/tty_port.c, line 550 drivers/tty/tty_port.c, line 565 drivers/tty/tty_port.c, line 611 drivers/tty/tty_port.c, line 637 drivers/tty/tty_port.c, line 659 drivers/tty/tty_port.c, line 675 include/linux/serdev.h, line 317 include/linux/serdev.h, line 321 include/linux/serdev.h, line 324 include/linux/serdev.h, line 326 include/linux/serdev.h, line 332