diff options
Diffstat (limited to 'drivers/usb/serial/io_ti.c')
| -rw-r--r-- | drivers/usb/serial/io_ti.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/usb/serial/io_ti.c b/drivers/usb/serial/io_ti.c index 3abbdaad838d..590f27d3bfc1 100644 --- a/drivers/usb/serial/io_ti.c +++ b/drivers/usb/serial/io_ti.c @@ -2088,6 +2088,7 @@ static int edge_chars_in_buffer(struct tty_struct *tty) struct edgeport_port *edge_port = usb_get_serial_port_data(port); int chars = 0; unsigned long flags; + int ret; if (edge_port == NULL) return 0; @@ -2098,6 +2099,12 @@ static int edge_chars_in_buffer(struct tty_struct *tty) chars = kfifo_len(&edge_port->write_fifo); spin_unlock_irqrestore(&edge_port->ep_lock, flags); + if (!chars) { + ret = tx_active(edge_port); + if (ret > 0) + chars = ret; + } + dev_dbg(&port->dev, "%s - returns %d\n", __func__, chars); return chars; } |