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path: root/drivers/usb/class/cdc-acm.c
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Diffstat (limited to 'drivers/usb/class/cdc-acm.c')
-rw-r--r--drivers/usb/class/cdc-acm.c9
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)