USB: serial: add tiocmiwait subdriver operation

Add tiocmiwait operation to struct usb_serial_driver.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/linux/usb/serial.h b/include/linux/usb/serial.h
index 3f8f5e3c76d5..9c8b53f80f48 100644
--- a/include/linux/usb/serial.h
+++ b/include/linux/usb/serial.h
@@ -272,6 +272,7 @@ struct usb_serial_driver {
         int  (*tiocmget)(struct tty_struct *tty);
         int  (*tiocmset)(struct tty_struct *tty,
                          unsigned int set, unsigned int clear);
+        int  (*tiocmiwait)(struct tty_struct *tty, unsigned long arg);
         int  (*get_icount)(struct tty_struct *tty,
                         struct serial_icounter_struct *icount);
         /* Called by the tty layer for port level work. There may or may not