diff options
Diffstat (limited to 'drivers/usb/serial')
| -rw-r--r-- | drivers/usb/serial/whiteheat.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/usb/serial/whiteheat.c b/drivers/usb/serial/whiteheat.c index 79314d8c94a4..76cabcb30d21 100644 --- a/drivers/usb/serial/whiteheat.c +++ b/drivers/usb/serial/whiteheat.c @@ -559,6 +559,10 @@ static int firm_send_command(struct usb_serial_port *port, __u8 command, command_port = port->serial->port[COMMAND_PORT]; command_info = usb_get_serial_port_data(command_port); + + if (command_port->bulk_out_size < datasize + 1) + return -EIO; + mutex_lock(&command_info->mutex); command_info->command_finished = false; |