diff --git a/drivers/tty/serial/bcm63xx_uart.c b/drivers/tty/serial/bcm63xx_uart.c
index d14ba5aa2ec7e0582f88a930fa576b83eb5ee241..649d5129c4b44458c5aa7233572d9974ee4b3ff4 100644
--- a/drivers/tty/serial/bcm63xx_uart.c
+++ b/drivers/tty/serial/bcm63xx_uart.c
@@ -302,7 +302,9 @@ static void bcm_uart_do_rx(struct uart_port *port)
 
 	} while (--max_count);
 
+	spin_unlock(&port->lock);
 	tty_flip_buffer_push(tty_port);
+	spin_lock(&port->lock);
 }
 
 /*