USB: serial: f81232: drop time-based drain delay
The f81232 driver now waits for the transmit FIFO to drain during close
so there is no need to keep the time-based drain delay, which would add
up to two seconds on every close for low line speeds.
Fixes: 98405f81036d ("USB: serial: f81232: add tx_empty function")
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
diff --git a/drivers/usb/serial/f81232.c b/drivers/usb/serial/f81232.c
index b4b847d..a7a7af8 100644
--- a/drivers/usb/serial/f81232.c
+++ b/drivers/usb/serial/f81232.c
@@ -948,7 +948,6 @@ static int f81232_port_probe(struct usb_serial_port *port)
usb_set_serial_port_data(port, priv);
- port->port.drain_delay = 256;
priv->port = port;
return 0;