diff --git a/arch/m68k/mac/baboon.c b/arch/m68k/mac/baboon.c
index c7ea6475ef9b..a7d280220662 100644
--- a/arch/m68k/mac/baboon.c
+++ b/arch/m68k/mac/baboon.c
@@ -18,10 +18,6 @@
 int baboon_present;
 static volatile struct baboon *baboon;
 
-#if 0
-extern int macide_ack_intr(struct ata_channel *);
-#endif
-
 /*
  * Baboon initialization.
  */
@@ -41,33 +37,26 @@ void __init baboon_init(void)
 }
 
 /*
- * Baboon interrupt handler. This works a lot like a VIA.
+ * Baboon interrupt handler.
+ * XXX how do you clear a pending IRQ? is it even necessary?
  */
 
 static void baboon_irq(struct irq_desc *desc)
 {
-	int irq_bit, irq_num;
-	unsigned char events;
+	short events, irq_bit;
+	int irq_num;
 
 	events = baboon->mb_ifr & 0x07;
-	if (!events)
-		return;
-
 	irq_num = IRQ_BABOON_0;
 	irq_bit = 1;
 	do {
-	        if (events & irq_bit) {
-			baboon->mb_ifr &= ~irq_bit;
+		if (events & irq_bit) {
+			events &= ~irq_bit;
 			generic_handle_irq(irq_num);
 		}
+		++irq_num;
 		irq_bit <<= 1;
-		irq_num++;
-	} while(events >= irq_bit);
-#if 0
-	if (baboon->mb_ifr & 0x02) macide_ack_intr(NULL);
-	/* for now we need to smash all interrupts */
-	baboon->mb_ifr &= ~events;
-#endif
+	} while (events);
 }
 
 /*