From: Johan Hovold <johan@kernel.org>
Date: Mon, 12 Apr 2021 09:38:12 +0000 (+0200)
Subject: USB: serial: f81232: drop time-based drain delay
X-Git-Tag: v5.15.73~12144^2~20^2~25
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=8674cabe052b9ce23f72abb83058fc1d545e257a;p=platform%2Fkernel%2Flinux-rpi.git

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 b4b847dce4bc..a7a7af8d05bf 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;