diff options
Diffstat (limited to 'drivers/usb/class/cdc-acm.c')
| -rw-r--r-- | drivers/usb/class/cdc-acm.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c index 95ae6377d7e..0725b1871f2 100644 --- a/drivers/usb/class/cdc-acm.c +++ b/drivers/usb/class/cdc-acm.c @@ -732,13 +732,16 @@ static void acm_tty_unthrottle(struct tty_struct *tty) tasklet_schedule(&acm->urb_task); } -static void acm_tty_break_ctl(struct tty_struct *tty, int state) +static int acm_tty_break_ctl(struct tty_struct *tty, int state) { struct acm *acm = tty->driver_data; + int retval; if (!ACM_READY(acm)) - return; - if (acm_send_break(acm, state ? 0xffff : 0)) + return -EINVAL; + retval = acm_send_break(acm, state ? 0xffff : 0); + if (retval < 0) dbg("send break failed"); + return retval; } static int acm_tty_tiocmget(struct tty_struct *tty, struct file *file) |