From: Lukas Wunner <lukas@wunner.de>
Date: Fri, 27 Mar 2020 15:38:15 +0100
Subject: serial: 8250: Fix rs485 delay after console write
Git-commit: 4e36f94e996ebee8a919c6cd419f55e4d08ad4e3
Patch-mainline: v5.7-rc1
References: jsc#SLE-16106

Due to a silly copy-paste mistake, commit 7f9803072ff6 ("serial: 8250:
Support console on software emulated rs485 ports") erroneously pauses
for the duration of delay_rts_before_send after writing to the console,
instead of delay_rts_after_send.  Mea culpa.

Fixes: 7f9803072ff6 ("serial: 8250: Support console on software emulated rs485 ports")
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Link: https://lore.kernel.org/r/9dd67f33c90d23f7fafa3b81b1e812ddabf9ca24.1585319447.git.lukas@wunner.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
---
 drivers/tty/serial/8250/8250_port.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/tty/serial/8250/8250_port.c b/drivers/tty/serial/8250/8250_port.c
index 2f973280c34a..a1d3aef3c406 100644
--- a/drivers/tty/serial/8250/8250_port.c
+++ b/drivers/tty/serial/8250/8250_port.c
@@ -3271,7 +3271,7 @@ void serial8250_console_write(struct uart_8250_port *up, const char *s,
 	serial_port_out(port, UART_IER, ier);
 
 	if (em485) {
-		mdelay(port->rs485.delay_rts_before_send);
+		mdelay(port->rs485.delay_rts_after_send);
 		if (em485->tx_stopped)
 			up->rs485_stop_tx(up);
 	}