mxser: make use of UART_LCR_WLEN() + tty_get_char_size()

Having a generic UART_LCR_WLEN() macro and the tty_get_char_size()
helper, we can remove all those repeated switch-cases in drivers.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Link: https://lore.kernel.org/r/20220224095558.30929-5-jslaby@suse.cz
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/mxser.c b/drivers/tty/mxser.c
index 836c9ec..6ebd3e4 100644 (file)
--- a/drivers/tty/mxser.c
+++ b/drivers/tty/mxser.c
@@ -588,21 +588,7 @@ static void mxser_change_speed(struct tty_struct *tty, struct ktermios *old_term
        }
 
        /* byte size and parity */
-       switch (cflag & CSIZE) {
-       default:
-       case CS5:
-               cval = UART_LCR_WLEN5;
-               break;
-       case CS6:
-               cval = UART_LCR_WLEN6;
-               break;
-       case CS7:
-               cval = UART_LCR_WLEN7;
-               break;
-       case CS8:
-               cval = UART_LCR_WLEN8;
-               break;
-       }
+       cval = UART_LCR_WLEN(tty_get_char_size(tty->termios.c_cflag));
 
        if (cflag & CSTOPB)
                cval |= UART_LCR_STOP;