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path: root/drivers/usb/serial/opticon.c
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Diffstat (limited to 'drivers/usb/serial/opticon.c')
-rw-r--r--drivers/usb/serial/opticon.c18
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,