serial: omap: remove redundant code in rs485_config

In uart_set_rs485_config() the serial core already clamps the RTS delays.
It also assigns the passed serial_rs485 struct to the uart port.

So remove these tasks from the drivers rs485_config() function to avoid
redundancy.
Signed-off-by: Lino Sanfilippo <LinoSanfilippo@gmx.de>
Link: https://lore.kernel.org/r/20220410104642.32195-6-LinoSanfilippo@gmx.deSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/tty/serial/omap-serial.c

@@ -1336,18 +1336,11 @@ serial_omap_config_rs485(struct uart_port *port, struct serial_rs485 *rs485)
 	up->ier = 0;
 	serial_out(up, UART_IER, 0);
 
-	/* Clamp the delays to [0, 100ms] */
-	rs485->delay_rts_before_send = min(rs485->delay_rts_before_send, 100U);
-	rs485->delay_rts_after_send  = min(rs485->delay_rts_after_send, 100U);
-
-	/* store new config */
-	port->rs485 = *rs485;
-
 	if (up->rts_gpiod) {
 		/* enable / disable rts */
-		val = (port->rs485.flags & SER_RS485_ENABLED) ?
+		val = (rs485->flags & SER_RS485_ENABLED) ?
 			SER_RS485_RTS_AFTER_SEND : SER_RS485_RTS_ON_SEND;
-		val = (port->rs485.flags & val) ? 1 : 0;
+		val = (rs485->flags & val) ? 1 : 0;
 		gpiod_set_value(up->rts_gpiod, val);
 	}
 
@@ -1358,7 +1351,7 @@ serial_omap_config_rs485(struct uart_port *port, struct serial_rs485 *rs485)
 	/* If RS-485 is disabled, make sure the THR interrupt is fired when
 	 * TX FIFO is below the trigger level.
 	 */
-	if (!(port->rs485.flags & SER_RS485_ENABLED) &&
+	if (!(rs485->flags & SER_RS485_ENABLED) &&
 	    (up->scr & OMAP_UART_SCR_TX_EMPTY)) {
 		up->scr &= ~OMAP_UART_SCR_TX_EMPTY;
 		serial_out(up, UART_OMAP_SCR, up->scr);