Function prototype or declaration at include/linux/usb/serial.h, line 351 References: drivers/usb/serial/ark3116.c, line 332 drivers/usb/serial/ark3116.c, line 393 drivers/usb/serial/belkin_sa.c, line 167 drivers/usb/serial/ch341.c, line 311 drivers/usb/serial/cp210x.c, line 657 drivers/usb/serial/f81232.c, line 560 drivers/usb/serial/generic.c, line 122 drivers/usb/serial/generic.c, line 140 drivers/usb/serial/kl5kusb105.c, line 327 drivers/usb/serial/kl5kusb105.c, line 351 drivers/usb/serial/mct_u232.c, line 504 drivers/usb/serial/pl2303.c, line 691 drivers/usb/serial/upd78f0730.c, line 407 drivers/usb/serial/visor.c, line 256 drivers/usb/serial/whiteheat.c, line 403 include/linux/usb/serial.h, line 351