diff --git a/drivers/tty/mxser.c b/drivers/tty/mxser.c
index e9248d39879c..c8a56b0d900d 100644
--- a/drivers/tty/mxser.c
+++ b/drivers/tty/mxser.c
@@ -262,7 +262,6 @@ struct mxser_port {
 	unsigned int xmit_head;
 	unsigned int xmit_tail;
 	unsigned int xmit_cnt;
-	int closing;
 
 	spinlock_t slock;
 };
@@ -903,7 +902,6 @@ static void mxser_close(struct tty_struct *tty, struct file *filp)
 		return;
 	if (tty_port_close_start(port, tty, filp) == 0)
 		return;
-	info->closing = 1;
 	mutex_lock(&port->mutex);
 	mxser_stop_rx(info);
 	mxser_flush_buffer(tty);
@@ -912,7 +910,6 @@ static void mxser_close(struct tty_struct *tty, struct file *filp)
 	mxser_shutdown_port(port);
 	tty_port_set_initialized(port, 0);
 	mutex_unlock(&port->mutex);
-	info->closing = 0;
 	/* Right now the tty_port set is done outside of the close_end helper
 	   as we don't yet have everyone using refcounts */	
 	tty_port_close_end(port, tty);
@@ -1668,7 +1665,7 @@ static bool mxser_port_isr(struct mxser_port *port)
 
 	iir &= MOXA_MUST_IIR_MASK;
 	tty = tty_port_tty_get(&port->port);
-	if (!tty || port->closing || !tty_port_initialized(&port->port)) {
+	if (!tty) {
 		status = inb(port->ioaddr + UART_LSR);
 		outb(port->FCR | UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT,
 				port->ioaddr + UART_FCR);