4.4-stable review patch. If anyone has any objections, please let me know.
------------------
From: Johan Hovold <johan@xxxxxxxxxx>
commit f2950b78547ffb8475297ada6b92bc2d774d5461 upstream.
Make sure to stop the interrupt URB before returning on errors during
open.
Fixes: 664d5df92e88 ("USB: usb-serial ch341: support for DTR/RTS/CTS")
Signed-off-by: Johan Hovold <johan@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/usb/serial/ch341.c | 13 ++++++++++---
1 file changed, 10 insertions(+), 3 deletions(-)
--- a/drivers/usb/serial/ch341.c
+++ b/drivers/usb/serial/ch341.c
@@ -314,7 +314,7 @@ static int ch341_open(struct tty_struct
r = ch341_configure(serial->dev, priv);
if (r)
- goto out;
+ return r;
if (tty)
ch341_set_termios(tty, port, NULL);
@@ -324,12 +324,19 @@ static int ch341_open(struct tty_struct
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
--
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