1 files changed, 2 insertions, 9 deletions

diff --git a/drivers/tty/serial/m32r_sio.c b/drivers/tty/serial/m32r_sio.c
index 94a6792bf97b..e465dda63edf 100644
--- a/drivers/tty/serial/m32r_sio.c
+++ b/drivers/tty/serial/m32r_sio.c
@@ -70,13 +70,6 @@
 
 #define PASS_LIMIT      256
 
-/*
- * We default to IRQ0 for the "no irq" hack.   Some
- * machine types want others as well - they're free
- * to redefine this in their header file.
- */
-#define is_real_interrupt(irq)  ((irq) != 0)
-
 #define BASE_BAUD       115200
 
 /* Standard COM flags */
@@ -640,7 +633,7 @@ static int m32r_sio_startup(struct uart_port *port)
          * hardware interrupt, we use a timer-based system.  The original
          * driver used to do this with IRQ0.
          */
-        if (!is_real_interrupt(up->port.irq)) {
+        if (!up->port.irq) {
                 unsigned int timeout = up->port.timeout;
 
                 timeout = timeout > 6 ? (timeout / 2 - 2) : 1;
@@ -687,7 +680,7 @@ static void m32r_sio_shutdown(struct uart_port *port)
 
         sio_init();
 
-        if (!is_real_interrupt(up->port.irq))
+        if (!up->port.irq)
                 del_timer_sync(&up->timer);
         else
                 serial_unlink_irq_chain(up);