From: Johan Hovold <johan@xxxxxxxxxx>
This patch has been added to the 3.12 stable tree. If you have any
objections, please let us know.
===============
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: Jiri Slaby <jslaby@xxxxxxx>
---
drivers/usb/serial/ch341.c | 17 ++++++++++++-----
1 file changed, 12 insertions(+), 5 deletions(-)
diff --git a/drivers/usb/serial/ch341.c b/drivers/usb/serial/ch341.c
index 2272f4f8e4a0..52ac5fd05814 100644
--- a/drivers/usb/serial/ch341.c
+++ b/drivers/usb/serial/ch341.c
@@ -315,15 +315,15 @@ 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;
r = ch341_set_handshake(serial->dev, priv->line_control);
if (r)
- goto out;
+ return r;
r = ch341_set_baudrate(serial->dev, priv);
if (r)
- goto out;
+ return r;
dev_dbg(&port->dev, "%s - submitting interrupt urb", __func__);
r = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
@@ -331,12 +331,19 @@ static int ch341_open(struct tty_struct *tty, struct usb_serial_port *port)
dev_err(&port->dev, "%s - failed submitting interrupt urb,"
" error %d\n", __func__, r);
ch341_close(port);
- goto out;
+ return r;
}
r = usb_serial_generic_open(tty, port);
+ if (r)
+ goto err_kill_interrupt_urb;
-out: return r;
+ return 0;
+
+err_kill_interrupt_urb:
+ usb_kill_urb(port->interrupt_in_urb);
+
+ return r;
}
/* Old_termios contains the original termios settings and
--
2.11.0
--
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