diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/usb/serial/usb-serial.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c index 9bf01a5efc8..26e015c39a3 100644 --- a/drivers/usb/serial/usb-serial.c +++ b/drivers/usb/serial/usb-serial.c @@ -578,6 +578,17 @@ static void kill_traffic(struct usb_serial_port *port) { usb_kill_urb(port->read_urb); usb_kill_urb(port->write_urb); + /* + * This is tricky. + * Some drivers submit the read_urb in the + * handler for the write_urb or vice versa + * this order determines the order in which + * usb_kill_urb() must be used to reliably + * kill the URBs. As it is unknown here, + * both orders must be used in turn. + * The call below is not redundant. + */ + usb_kill_urb(port->read_urb); usb_kill_urb(port->interrupt_in_urb); usb_kill_urb(port->interrupt_out_urb); } |