serial: 8250: lpc18xx: Remove redundant sanity check for RS485 flags

Before the drivers rs485_config() function is called the serial core
already ensures that only one of both options RTS on send or RTS after send
is set. So remove the concerning sanity check in the driver function to
avoid redundancy.

Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Lino Sanfilippo <l.sanfilippo@kunbus.com>
Link: https://lore.kernel.org/r/20220710164442.2958979-9-LinoSanfilippo@gmx.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/serial/8250/8250_lpc18xx.c b/drivers/tty/serial/8250/8250_lpc18xx.c
index d6ca0d4..6dc85aa 100644 (file)
--- a/drivers/tty/serial/8250/8250_lpc18xx.c
+++ b/drivers/tty/serial/8250/8250_lpc18xx.c
@@ -44,12 +44,8 @@ static int lpc18xx_rs485_config(struct uart_port *port, struct ktermios *termios
                rs485_ctrl_reg |= LPC18XX_UART_RS485CTRL_NMMEN |
                                  LPC18XX_UART_RS485CTRL_DCTRL;
 
-               if (rs485->flags & SER_RS485_RTS_ON_SEND) {
+               if (rs485->flags & SER_RS485_RTS_ON_SEND)
                        rs485_ctrl_reg |= LPC18XX_UART_RS485CTRL_OINV;
-                       rs485->flags &= ~SER_RS485_RTS_AFTER_SEND;
-               } else {
-                       rs485->flags |= SER_RS485_RTS_AFTER_SEND;
-               }
        }
 
        if (rs485->delay_rts_after_send) {