diff --git a/drivers/parisc/dino.c b/drivers/parisc/dino.c
index d9f5148..9383063d 100644
--- a/drivers/parisc/dino.c
+++ b/drivers/parisc/dino.c
@@ -349,7 +349,6 @@
 	.name	= "GSC-PCI",
 	.unmask	= dino_unmask_irq,
 	.mask	= dino_mask_irq,
-	.ack	= no_ack_irq,
 };
 
 
diff --git a/drivers/parisc/eisa.c b/drivers/parisc/eisa.c
index 1211974..e860038 100644
--- a/drivers/parisc/eisa.c
+++ b/drivers/parisc/eisa.c
@@ -186,7 +186,6 @@
 	.name	=	"EISA",
 	.unmask	=	eisa_unmask_irq,
 	.mask	=	eisa_mask_irq,
-	.ack	=	no_ack_irq,
 };
 
 static irqreturn_t eisa_irq(int wax_irq, void *intr_dev)
@@ -340,7 +339,7 @@
 	setup_irq(2, &irq2_action);
 	for (i = 0; i < 16; i++) {
 		set_irq_chip_and_handler(i, &eisa_interrupt_type,
-			handle_level_irq);
+					 handle_simple_irq);
 	}
 	
 	EISA_bus = 1;
diff --git a/drivers/parisc/gsc.c b/drivers/parisc/gsc.c
index e605298..772b193 100644
--- a/drivers/parisc/gsc.c
+++ b/drivers/parisc/gsc.c
@@ -143,7 +143,6 @@
 	.name	=	"GSC-ASIC",
 	.unmask	=	gsc_asic_unmask_irq,
 	.mask	=	gsc_asic_mask_irq,
-	.ack	=	no_ack_irq,
 };
 
 int gsc_assign_irq(struct irq_chip *type, void *data)
@@ -153,7 +152,7 @@
 	if (irq > GSC_IRQ_MAX)
 		return NO_IRQ;
 
-	set_irq_chip_and_handler(irq, type, handle_level_irq);
+	set_irq_chip_and_handler(irq, type, handle_simple_irq);
 	set_irq_chip_data(irq, data);
 
 	return irq++;
diff --git a/drivers/parisc/iosapic.c b/drivers/parisc/iosapic.c
index a3120a0..0327894b 100644
--- a/drivers/parisc/iosapic.c
+++ b/drivers/parisc/iosapic.c
@@ -669,6 +669,13 @@
 	DBG(KERN_DEBUG "enable_irq(%d): eoi(%p, 0x%x)\n", irq,
 			vi->eoi_addr, vi->eoi_data);
 	iosapic_eoi(vi->eoi_addr, vi->eoi_data);
+}
+
+static void iosapic_eoi_irq(unsigned int irq)
+{
+	struct vector_info *vi = get_irq_chip_data(irq);
+
+	iosapic_eoi(vi->eoi_addr, vi->eoi_data);
 	cpu_eoi_irq(irq);
 }
 
@@ -705,6 +712,7 @@
 	.unmask	=	iosapic_unmask_irq,
 	.mask	=	iosapic_mask_irq,
 	.ack	=	cpu_ack_irq,
+	.eoi	=	iosapic_eoi_irq,
 #ifdef CONFIG_SMP
 	.set_affinity =	iosapic_set_affinity_irq,
 #endif
diff --git a/drivers/parisc/superio.c b/drivers/parisc/superio.c
index 0846daf..28241532c 100644
--- a/drivers/parisc/superio.c
+++ b/drivers/parisc/superio.c
@@ -323,7 +323,6 @@
 	.name	=	SUPERIO,
 	.unmask	=	superio_unmask_irq,
 	.mask	=	superio_mask_irq,
-	.ack =		no_ack_irq,
 };
 
 #ifdef DEBUG_SUPERIO_INIT
@@ -354,7 +353,7 @@
 #endif
 
 	for (i = 0; i < 16; i++) {
-		set_irq_chip_and_handler(i, &superio_interrupt_type, handle_level_irq);
+		set_irq_chip_and_handler(i, &superio_interrupt_type, handle_simple_irq);
 	}
 
 	/*