serial: bfin_5xx: remove useless gpio handling with hard flow control

For UARTs that have dedicated hardware flow control support, there will be
no gpios to request/free as they are part of the normal peripheral pins.
Signed-off-by: NSonic Zhang <sonic.zhang@analog.com>
Signed-off-by: NMike Frysinger <vapier@gentoo.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

drivers/serial/bfin_5xx.c

@@ -746,15 +746,6 @@ static int bfin_serial_startup(struct uart_port *port)
 			Status interrupt.\n");
 	}
 
-	if (uart->cts_pin >= 0) {
-		gpio_request(uart->cts_pin, DRIVER_NAME);
-		gpio_direction_output(uart->cts_pin, 1);
-	}
-	if (uart->rts_pin >= 0) {
-		gpio_request(uart->rts_pin, DRIVER_NAME);
-		gpio_direction_output(uart->rts_pin, 0);
-	}
-
 	/* CTS RTS PINs are negative assertive. */
 	UART_PUT_MCR(uart, ACTS);
 	UART_SET_IER(uart, EDSSI);
@@ -801,10 +792,6 @@ static void bfin_serial_shutdown(struct uart_port *port)
 		gpio_free(uart->rts_pin);
 #endif
 #ifdef CONFIG_SERIAL_BFIN_HARD_CTSRTS
-	if (uart->cts_pin >= 0)
-		gpio_free(uart->cts_pin);
-	if (uart->rts_pin >= 0)
-		gpio_free(uart->rts_pin);
 	if (UART_GET_IER(uart) && EDSSI)
 		free_irq(uart->status_irq, uart);
 #endif
@@ -1409,8 +1396,7 @@ static int bfin_serial_remove(struct platform_device *dev)
 			continue;
 		uart_remove_one_port(&bfin_serial_reg, &bfin_serial_ports[i].port);
 		bfin_serial_ports[i].port.dev = NULL;
-#if defined(CONFIG_SERIAL_BFIN_CTSRTS) || \
-	defined(CONFIG_SERIAL_BFIN_HARD_CTSRTS)
+#if defined(CONFIG_SERIAL_BFIN_CTSRTS)
 		gpio_free(bfin_serial_ports[i].cts_pin);
 		gpio_free(bfin_serial_ports[i].rts_pin);
 #endif