diff --git a/drivers/char/hvcs.c b/drivers/char/hvcs.c
index 0b89bcd..8728255 100644
--- a/drivers/char/hvcs.c
+++ b/drivers/char/hvcs.c
@@ -313,8 +313,7 @@
 
 static void hvcs_unthrottle(struct tty_struct *tty);
 static void hvcs_throttle(struct tty_struct *tty);
-static irqreturn_t hvcs_handle_interrupt(int irq, void *dev_instance,
-		struct pt_regs *regs);
+static irqreturn_t hvcs_handle_interrupt(int irq, void *dev_instance);
 
 static int hvcs_write(struct tty_struct *tty,
 		const unsigned char *buf, int count);
@@ -387,8 +386,7 @@
  * handler taking any further interrupts because they are disabled which means
  * the hvcs_struct will always be valid in this handler.
  */
-static irqreturn_t hvcs_handle_interrupt(int irq, void *dev_instance,
-		struct pt_regs *regs)
+static irqreturn_t hvcs_handle_interrupt(int irq, void *dev_instance)
 {
 	struct hvcs_struct *hvcsd = dev_instance;