diff --git a/drivers/serial/serial_core.c b/drivers/serial/serial_core.c
index 3c45a8d7eb7f856a56952445ed6b344802435917..69c4e20530f53d2ac44debb1015611a6d2dc6e5d 100644
--- a/drivers/serial/serial_core.c
+++ b/drivers/serial/serial_core.c
@@ -652,7 +652,7 @@ static int uart_get_info(struct uart_state *state,
 	tmp.xmit_fifo_size  = uport->fifosize;
 	tmp.baud_base	    = uport->uartclk / 16;
 	tmp.close_delay	    = port->close_delay / 10;
-	tmp.closing_wait    = port->closing_wait == USF_CLOSING_WAIT_NONE ?
+	tmp.closing_wait    = port->closing_wait == ASYNC_CLOSING_WAIT_NONE ?
 				ASYNC_CLOSING_WAIT_NONE :
 				port->closing_wait / 10;
 	tmp.custom_divisor  = uport->custom_divisor;
@@ -690,7 +690,7 @@ static int uart_set_info(struct uart_state *state,
 	new_serial.irq = irq_canonicalize(new_serial.irq);
 	close_delay = new_serial.close_delay * 10;
 	closing_wait = new_serial.closing_wait == ASYNC_CLOSING_WAIT_NONE ?
-			USF_CLOSING_WAIT_NONE : new_serial.closing_wait * 10;
+			ASYNC_CLOSING_WAIT_NONE : new_serial.closing_wait * 10;
 
 	/*
 	 * This semaphore protects port->count.  It is also
@@ -1307,7 +1307,7 @@ static void uart_close(struct tty_struct *tty, struct file *filp)
 	 */
 	tty->closing = 1;
 
-	if (port->closing_wait != USF_CLOSING_WAIT_NONE)
+	if (port->closing_wait != ASYNC_CLOSING_WAIT_NONE)
 		tty_wait_until_sent(tty, msecs_to_jiffies(port->closing_wait));
 
 	/*
diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h
index bcafecd3b7c175878fd74db47970fde36359a217..d58e460844ddd61b25784d480e34f224acdc2a7b 100644
--- a/include/linux/serial_core.h
+++ b/include/linux/serial_core.h
@@ -342,9 +342,6 @@ struct uart_port {
 struct uart_state {
 	struct tty_port		port;
 
-#define USF_CLOSING_WAIT_INF	(0)
-#define USF_CLOSING_WAIT_NONE	(~0U)
-
 	int			pm_state;
 	struct circ_buf		xmit;