diff options
Diffstat (limited to 'drivers/usb/serial/opticon.c')
| -rw-r--r-- | drivers/usb/serial/opticon.c | 18 |
1 files changed, 8 insertions, 10 deletions
diff --git a/drivers/usb/serial/opticon.c b/drivers/usb/serial/opticon.c index e13e1a4d3e1..5f4b0cd0f6e 100644 --- a/drivers/usb/serial/opticon.c +++ b/drivers/usb/serial/opticon.c @@ -120,7 +120,10 @@ static int send_control_msg(struct usb_serial_port *port, u8 requesttype, 0, 0, buffer, 1, 0); kfree(buffer); - return retval; + if (retval < 0) + return retval; + + return 0; } static int opticon_open(struct tty_struct *tty, struct usb_serial_port *port) @@ -306,7 +309,6 @@ static int opticon_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear) { struct usb_serial_port *port = tty->driver_data; - struct usb_serial *serial = port->serial; struct opticon_private *priv = usb_get_serial_port_data(port); unsigned long flags; bool rts; @@ -327,15 +329,11 @@ static int opticon_tiocmset(struct tty_struct *tty, if (!changed) return 0; - /* Send the new RTS state to the connected device */ - mutex_lock(&serial->disc_mutex); - if (!serial->disconnected) - ret = send_control_msg(port, CONTROL_RTS, !rts); - else - ret = -ENODEV; - mutex_unlock(&serial->disc_mutex); + ret = send_control_msg(port, CONTROL_RTS, !rts); + if (ret) + return usb_translate_errors(ret); - return ret; + return 0; } static int get_serial_info(struct usb_serial_port *port, |