USB: pl2303: remove disconnect test from tiocmset

Remove unnecessary disconnect test in tiocmset. No ioctls will be made
after disconnect returns.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 4 insertions, 11 deletions

diff --git a/drivers/usb/serial/pl2303.c b/drivers/usb/serial/pl2303.c
index 4dff17902fa0..7151659367a0 100644
--- a/drivers/usb/serial/pl2303.c
+++ b/drivers/usb/serial/pl2303.c
@@ -531,7 +531,6 @@ static int pl2303_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 pl2303_private *priv = usb_get_serial_port_data(port);
         unsigned long flags;
         u8 control;
@@ -549,17 +548,11 @@ static int pl2303_tiocmset(struct tty_struct *tty,
         control = priv->line_control;
         spin_unlock_irqrestore(&priv->lock, flags);
 
-        mutex_lock(&serial->disc_mutex);
-        if (!serial->disconnected) {
-                ret = pl2303_set_control_lines(port, control);
-                if (ret)
-                        ret = usb_translate_errors(ret);
-        } else {
-                ret = -ENODEV;
-        }
-        mutex_unlock(&serial->disc_mutex);
+        ret = pl2303_set_control_lines(port, control);
+        if (ret)
+                return usb_translate_errors(ret);
 
-        return ret;
+        return 0;
 }
 
 static int pl2303_tiocmget(struct tty_struct *tty)