Extern or forward variable declaration at include/linux/serial_core.h, line 309 References: drivers/net/usb/hso.c, line 384 drivers/pps/clients/pps-ldisc.c, line 60 drivers/tty/goldfish.c, line 48 drivers/tty/goldfish.c, line 214 drivers/tty/goldfish.c, line 247 drivers/tty/hvc/hvc_console.c, line 54 drivers/tty/hvc/hvc_console.c, line 197 drivers/tty/hvc/hvc_console.c, line 329 drivers/tty/hvc/hvc_console.c, line 867 drivers/tty/hvc/hvc_console.c, line 872 drivers/tty/hvc/hvc_console.c, line 887 drivers/tty/hvc/hvc_console.c, line 1022 drivers/tty/mips_ejtag_fdc.c, line 143 drivers/tty/mips_ejtag_fdc.c, line 293 drivers/tty/mips_ejtag_fdc.c, line 355 drivers/tty/mips_ejtag_fdc.c, line 760 drivers/tty/mips_ejtag_fdc.c, line 889 drivers/tty/serial/kgdb_nmi.c, line 66 drivers/tty/serial/kgdb_nmi.c, line 68 drivers/tty/serial/kgdb_nmi.c, line 234 drivers/tty/serial/serial_core.c, line 1830 drivers/tty/serial/serial_core.c, line 2071 drivers/tty/serial/serial_core.c, line 2071 drivers/tty/serial/serial_core.c, line 2319 drivers/tty/serial/serial_core.c, line 2358 drivers/tty/serial/serial_core.c, line 2374 drivers/tty/serial/serial_core.c, line 2446 drivers/tty/serial/serial_core.c, line 2463 drivers/tty/serial/serial_core.c, line 2513 drivers/tty/serial/serial_core.c, line 2513 drivers/tty/serial/serial_core.c, line 2522 drivers/tty/serial/serial_core.c, line 2525 drivers/tty/serial/serial_core.c, line 2529 drivers/tty/serial/serial_core.c, line 2743 drivers/tty/serial/serial_core.c, line 2745 drivers/tty/serial/serial_core.c, line 2784 drivers/tty/serial/serial_core.c, line 2847 drivers/tty/serial/sn_console.c, line 731 drivers/tty/serial/suncore.c, line 39 drivers/tty/serial/uartlite.c, line 942 drivers/tty/serial/xilinx_uartps.c, line 1563 drivers/tty/serial/xilinx_uartps.c, line 1571 include/linux/serial_core.h, line 309 include/linux/serial_core.h, line 325 include/linux/serial_core.h, line 325 include/linux/serial_core.h, line 410