USB: serial: ch341: fix open error handling

Make sure to stop the interrupt URB before returning on errors during
open.

Fixes: 664d5df92e88 ("USB: usb-serial ch341: support for DTR/RTS/CTS")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>

1 files changed, 10 insertions, 3 deletions

diff --git a/drivers/usb/serial/ch341.c b/drivers/usb/serial/ch341.c
index 0cc5056b304d..8f41d4385f1c 100644
--- a/drivers/usb/serial/ch341.c
+++ b/drivers/usb/serial/ch341.c
@@ -319,7 +319,7 @@ static int ch341_open(struct tty_struct *tty, struct usb_serial_port *port)
 
         r = ch341_configure(serial->dev, priv);
         if (r)
-                goto out;
+                return r;
 
         if (tty)
                 ch341_set_termios(tty, port, NULL);
@@ -329,12 +329,19 @@ static int ch341_open(struct tty_struct *tty, struct usb_serial_port *port)
         if (r) {
                 dev_err(&port->dev, "%s - failed to submit interrupt urb: %d\n",
                         __func__, r);
-                goto out;
+                return r;
         }
 
         r = usb_serial_generic_open(tty, port);
+        if (r)
+                goto err_kill_interrupt_urb;
+
+        return 0;
+
+err_kill_interrupt_urb:
+        usb_kill_urb(port->interrupt_in_urb);
 
-out:    return r;
+        return r;
 }
 
 /* Old_termios contains the original termios settings and