diff --git a/drivers/tty/serial/sc16is7xx.c b/drivers/tty/serial/sc16is7xx.c
index ab9159441d02..4def1b7266f6 100644
--- a/drivers/tty/serial/sc16is7xx.c
+++ b/drivers/tty/serial/sc16is7xx.c
@@ -641,9 +641,9 @@ static void sc16is7xx_handle_tx(struct uart_port *port)
 	}
 
 	if (uart_circ_empty(xmit) || uart_tx_stopped(port)) {
-		spin_lock_irqsave(&port->lock, flags);
+		uart_port_lock_irqsave(port, &flags);
 		sc16is7xx_stop_tx(port);
-		spin_unlock_irqrestore(&port->lock, flags);
+		uart_port_unlock_irqrestore(port, flags);
 		return;
 	}
 
@@ -672,13 +672,13 @@ static void sc16is7xx_handle_tx(struct uart_port *port)
 		sc16is7xx_fifo_write(port, to_send);
 	}
 
-	spin_lock_irqsave(&port->lock, flags);
+	uart_port_lock_irqsave(port, &flags);
 	if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
 		uart_write_wakeup(port);
 
 	if (uart_circ_empty(xmit))
 		sc16is7xx_stop_tx(port);
-	spin_unlock_irqrestore(&port->lock, flags);
+	uart_port_unlock_irqrestore(port, flags);
 }
 
 static unsigned int sc16is7xx_get_hwmctrl(struct uart_port *port)
@@ -709,7 +709,7 @@ static void sc16is7xx_update_mlines(struct sc16is7xx_one *one)
 
 	one->old_mctrl = status;
 
-	spin_lock_irqsave(&port->lock, flags);
+	uart_port_lock_irqsave(port, &flags);
 	if ((changed & TIOCM_RNG) && (status & TIOCM_RNG))
 		port->icount.rng++;
 	if (changed & TIOCM_DSR)
@@ -720,7 +720,7 @@ static void sc16is7xx_update_mlines(struct sc16is7xx_one *one)
 		uart_handle_cts_change(port, status & TIOCM_CTS);
 
 	wake_up_interruptible(&port->state->port.delta_msr_wait);
-	spin_unlock_irqrestore(&port->lock, flags);
+	uart_port_unlock_irqrestore(port, flags);
 }
 
 static bool sc16is7xx_port_irq(struct sc16is7xx_port *s, int portno)
@@ -814,9 +814,9 @@ static void sc16is7xx_tx_proc(struct kthread_work *ws)
 	sc16is7xx_handle_tx(port);
 	mutex_unlock(&one->efr_lock);
 
-	spin_lock_irqsave(&port->lock, flags);
+	uart_port_lock_irqsave(port, &flags);
 	sc16is7xx_ier_set(port, SC16IS7XX_IER_THRI_BIT);
-	spin_unlock_irqrestore(&port->lock, flags);
+	uart_port_unlock_irqrestore(port, flags);
 }
 
 static void sc16is7xx_reconf_rs485(struct uart_port *port)
@@ -827,14 +827,14 @@ static void sc16is7xx_reconf_rs485(struct uart_port *port)
 	struct serial_rs485 *rs485 = &port->rs485;
 	unsigned long irqflags;
 
-	spin_lock_irqsave(&port->lock, irqflags);
+	uart_port_lock_irqsave(port, &irqflags);
 	if (rs485->flags & SER_RS485_ENABLED) {
 		efcr |=	SC16IS7XX_EFCR_AUTO_RS485_BIT;
 
 		if (rs485->flags & SER_RS485_RTS_AFTER_SEND)
 			efcr |= SC16IS7XX_EFCR_RTS_INVERT_BIT;
 	}
-	spin_unlock_irqrestore(&port->lock, irqflags);
+	uart_port_unlock_irqrestore(port, irqflags);
 
 	sc16is7xx_port_update(port, SC16IS7XX_EFCR_REG, mask, efcr);
 }
@@ -845,10 +845,10 @@ static void sc16is7xx_reg_proc(struct kthread_work *ws)
 	struct sc16is7xx_one_config config;
 	unsigned long irqflags;
 
-	spin_lock_irqsave(&one->port.lock, irqflags);
+	uart_port_lock_irqsave(&one->port, &irqflags);
 	config = one->config;
 	memset(&one->config, 0, sizeof(one->config));
-	spin_unlock_irqrestore(&one->port.lock, irqflags);
+	uart_port_unlock_irqrestore(&one->port, irqflags);
 
 	if (config.flags & SC16IS7XX_RECONF_MD) {
 		u8 mcr = 0;
@@ -954,18 +954,18 @@ static void sc16is7xx_throttle(struct uart_port *port)
 	 * value set in MCR register. Stop reading data from RX FIFO so the
 	 * AutoRTS feature will de-activate RTS output.
 	 */
-	spin_lock_irqsave(&port->lock, flags);
+	uart_port_lock_irqsave(port, &flags);
 	sc16is7xx_ier_clear(port, SC16IS7XX_IER_RDI_BIT);
-	spin_unlock_irqrestore(&port->lock, flags);
+	uart_port_unlock_irqrestore(port, flags);
 }
 
 static void sc16is7xx_unthrottle(struct uart_port *port)
 {
 	unsigned long flags;
 
-	spin_lock_irqsave(&port->lock, flags);
+	uart_port_lock_irqsave(port, &flags);
 	sc16is7xx_ier_set(port, SC16IS7XX_IER_RDI_BIT);
-	spin_unlock_irqrestore(&port->lock, flags);
+	uart_port_unlock_irqrestore(port, flags);
 }
 
 static unsigned int sc16is7xx_tx_empty(struct uart_port *port)
@@ -1103,7 +1103,7 @@ static void sc16is7xx_set_termios(struct uart_port *port,
 	/* Setup baudrate generator */
 	baud = sc16is7xx_set_baud(port, baud);
 
-	spin_lock_irqsave(&port->lock, flags);
+	uart_port_lock_irqsave(port, &flags);
 
 	/* Update timeout according to new baud rate */
 	uart_update_timeout(port, termios->c_cflag, baud);
@@ -1111,7 +1111,7 @@ static void sc16is7xx_set_termios(struct uart_port *port,
 	if (UART_ENABLE_MS(port, termios->c_cflag))
 		sc16is7xx_enable_ms(port);
 
-	spin_unlock_irqrestore(&port->lock, flags);
+	uart_port_unlock_irqrestore(port, flags);
 }
 
 static int sc16is7xx_config_rs485(struct uart_port *port, struct ktermios *termios,
@@ -1197,9 +1197,9 @@ static int sc16is7xx_startup(struct uart_port *port)
 	sc16is7xx_port_write(port, SC16IS7XX_IER_REG, val);
 
 	/* Enable modem status polling */
-	spin_lock_irqsave(&port->lock, flags);
+	uart_port_lock_irqsave(port, &flags);
 	sc16is7xx_enable_ms(port);
-	spin_unlock_irqrestore(&port->lock, flags);
+	uart_port_unlock_irqrestore(port, flags);
 
 	return 0;
 }