diff --git a/drivers/char/hpet.c b/drivers/char/hpet.c
index 58b0eb5..091a11c 100644
--- a/drivers/char/hpet.c
+++ b/drivers/char/hpet.c
@@ -116,7 +116,7 @@
 }
 #endif
 
-static irqreturn_t hpet_interrupt(int irq, void *data, struct pt_regs *regs)
+static irqreturn_t hpet_interrupt(int irq, void *data)
 {
 	struct hpet_dev *devp;
 	unsigned long isr;