From: Johan Hovold <johan@kernel.org>
Date: Fri, 6 Jan 2017 18:15:13 +0000 (+0100)
Subject: USB: serial: ch341: fix open error handling
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=f2950b78547ffb8475297ada6b92bc2d774d5461;p=linux-beck.git

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>
---

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