tty: serial: fsl_lpuart: Clear CSTOPB unconditionally

Clearing CSTOPB bit if it is set is functionally equivalent to jsut
clearing it unconditionally. Drop unnecessary check.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Cc: Stefan Agner <stefan@agner.ch>
Cc: Bhuvanchandra DV <bhuvanchandra.dv@toradex.com>
Cc: Chris Healy <cphealy@gmail.com>
Cc: Cory Tusar <cory.tusar@zii.aero>
Cc: Lucas Stach <l.stach@pengutronix.de>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Jiri Slaby <jslaby@suse.com>
Cc: linux-imx@nxp.com
Cc: linux-serial@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Link: https://lore.kernel.org/r/20190729195226.8862-13-andrew.smirnov@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/serial/fsl_lpuart.c b/drivers/tty/serial/fsl_lpuart.c
index 79922f179b08bf7901fe870db23b160c4c56865b..a0f38d7caa76f6f9891dd3e127673711caad85ef 100644 (file)
--- a/drivers/tty/serial/fsl_lpuart.c
+++ b/drivers/tty/serial/fsl_lpuart.c
@@ -1655,8 +1655,7 @@ lpuart_set_termios(struct uart_port *port, struct ktermios *termios,
        else
                modem &= ~(UARTMODEM_RXRTSE | UARTMODEM_TXCTSE);
 
-       if (termios->c_cflag & CSTOPB)
-               termios->c_cflag &= ~CSTOPB;
+       termios->c_cflag &= ~CSTOPB;
 
        /* parity must be enabled when CS7 to match 8-bits format */
        if ((termios->c_cflag & CSIZE) == CS7)