--- drivers/usb/serial/mos7720.c

+++ drivers/usb/serial/mos7720.c

@@ -1466,6 +1466,9 @@ static int mos7720_ioctl(struct tty_stru

case TIOCGICOUNT:

cnow = mos7720_port->icount;

+

+ memset(&icount, 0, sizeof(struct serial_icounter_struct));

+

icount.cts = cnow.cts;

icount.dsr = cnow.dsr;

icount.rng = cnow.rng;