diff --git a/drivers/tty/serial/atmel_serial.c b/drivers/tty/serial/atmel_serial.c
index 714e6ff4a8fb..98a3f36b40b9 100644
--- a/drivers/tty/serial/atmel_serial.c
+++ b/drivers/tty/serial/atmel_serial.c
@@ -873,11 +873,11 @@ static void atmel_complete_tx_dma(void *arg)
 
 	port->icount.tx += atmel_port->tx_len;
 
-	spin_lock_irq(&atmel_port->lock_tx);
+	spin_lock(&atmel_port->lock_tx);
 	async_tx_ack(atmel_port->desc_tx);
 	atmel_port->cookie_tx = -EINVAL;
 	atmel_port->desc_tx = NULL;
-	spin_unlock_irq(&atmel_port->lock_tx);
+	spin_unlock(&atmel_port->lock_tx);
 
 	if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
 		uart_write_wakeup(port);