serial: fsl_lpuart: clear parity enable bit when disable parity

Current driver only enable parity enable bit and never clear it
when user set the termios. The fix clear the parity enable bit when
PARENB flag is not set in termios->c_cflag.

Cc: Lukas Wunner <lukas@wunner.de>
Signed-off-by: Andy Duan <fugang.duan@nxp.com>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
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 cabae83d43ab27a2a7219fc5256e01afc14fa87f..241a48e5052c37106acc8f672c37834dd38a74c8 100644 (file)
--- a/drivers/tty/serial/fsl_lpuart.c
+++ b/drivers/tty/serial/fsl_lpuart.c
@@ -1479,6 +1479,8 @@ lpuart_set_termios(struct uart_port *port, struct ktermios *termios,
                        else
                                cr1 &= ~UARTCR1_PT;
                }
+       } else {
+               cr1 &= ~UARTCR1_PE;
        }
 
        /* ask the core to calculate the divisor */
@@ -1690,6 +1692,8 @@ lpuart32_set_termios(struct uart_port *port, struct ktermios *termios,
                        else
                                ctrl &= ~UARTCTRL_PT;
                }
+       } else {
+               ctrl &= ~UARTCTRL_PE;
        }
 
        /* ask the core to calculate the divisor */