diff options
Diffstat (limited to 'nuttx')
| -rw-r--r-- | nuttx/drivers/serial/serial.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/nuttx/drivers/serial/serial.c b/nuttx/drivers/serial/serial.c index d9f161b18..b2719e62a 100644 --- a/nuttx/drivers/serial/serial.c +++ b/nuttx/drivers/serial/serial.c @@ -877,7 +877,7 @@ static int uart_ioctl(FAR struct file *filep, int cmd, unsigned long arg) } else { - count = dev->xmit.size - (dev->xmit.head - dev->xmit.tail); + count = dev->xmit.size - (dev->xmit.head - dev->xmit.tail) - 1; } irqrestore(state); |