From 8aebd806f310a9387c579fbac7b14cb6fff146ff Mon Sep 17 00:00:00 2001 From: Vision Systems GmbH Date: Thu, 14 Nov 2019 15:20:17 +0100 Subject: [PATCH] serial: 8250: fix rs485 operation with 8250_omap --- drivers/tty/serial/8250/8250_port.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/tty/serial/8250/8250_port.c b/drivers/tty/serial/8250/8250_port.c index 8407166610ce..25dd44d5f6ff 100644 --- a/drivers/tty/serial/8250/8250_port.c +++ b/drivers/tty/serial/8250/8250_port.c @@ -1405,7 +1405,8 @@ static void __do_stop_tx_rs485(struct uart_8250_port *p) * Enable previously disabled RX interrupts. */ if (!(p->port.rs485.flags & SER_RS485_RX_DURING_TX)) { - serial8250_clear_and_reinit_fifos(p); + serial_port_out(&p->port, UART_FCR, p->fcr | + UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT); p->ier |= UART_IER_RLSI | UART_IER_RDI; serial_port_out(&p->port, UART_IER, p->ier); -- 2.17.0