diff options
Diffstat (limited to 'drivers/usb/serial/kobil_sct.c')
| -rw-r--r-- | drivers/usb/serial/kobil_sct.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/drivers/usb/serial/kobil_sct.c b/drivers/usb/serial/kobil_sct.c index a31ea7e194dd..a6ebed1e0f20 100644 --- a/drivers/usb/serial/kobil_sct.c +++ b/drivers/usb/serial/kobil_sct.c @@ -393,12 +393,20 @@ static int kobil_tiocmget(struct tty_struct *tty) transfer_buffer_length, KOBIL_TIMEOUT); - dev_dbg(&port->dev, "%s - Send get_status_line_state URB returns: %i. Statusline: %02x\n", - __func__, result, transfer_buffer[0]); + dev_dbg(&port->dev, "Send get_status_line_state URB returns: %i\n", + result); + if (result < 1) { + if (result >= 0) + result = -EIO; + goto out_free; + } + + dev_dbg(&port->dev, "Statusline: %02x\n", transfer_buffer[0]); result = 0; if ((transfer_buffer[0] & SUSBCR_GSL_DSR) != 0) result = TIOCM_DSR; +out_free: kfree(transfer_buffer); return result; } |