diff options
Diffstat (limited to 'drivers/usb/serial/cp2101.c')
| -rw-r--r-- | drivers/usb/serial/cp2101.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/usb/serial/cp2101.c b/drivers/usb/serial/cp2101.c index cd5f71b7f63..f3ca66017a0 100644 --- a/drivers/usb/serial/cp2101.c +++ b/drivers/usb/serial/cp2101.c @@ -348,7 +348,10 @@ static void cp2101_close (struct usb_serial_port *port, struct file * filp) usb_kill_urb(port->write_urb); usb_kill_urb(port->read_urb); - cp2101_set_config_single(port, CP2101_UART, UART_DISABLE); + mutex_lock(&port->serial->disc_mutex); + if (!port->serial->disconnected) + cp2101_set_config_single(port, CP2101_UART, UART_DISABLE); + mutex_unlock(&port->serial->disc_mutex); } /* |