diff --git a/hw/fdc.c b/hw/fdc.c
index d761e62..47b1c9d 100644
--- a/hw/fdc.c
+++ b/hw/fdc.c
@@ -1875,10 +1875,9 @@ fdctrl_t *fdctrl_init_isa(BlockDriverState **fds)
 {
     fdctrl_t *fdctrl;
     ISADevice *dev;
-    int isairq = 6;
     int dma_chann = 2;
 
-    dev = isa_create_simple("isa-fdc", isairq, -1);
+    dev = isa_create_simple("isa-fdc");
     fdctrl = &(DO_UPCAST(fdctrl_isabus_t, busdev, dev)->state);
 
     fdctrl->dma_chann = dma_chann;
@@ -1969,6 +1968,7 @@ static int isabus_fdc_init1(ISADevice *dev)
     fdctrl_isabus_t *isa = DO_UPCAST(fdctrl_isabus_t, busdev, dev);
     fdctrl_t *fdctrl = &isa->state;
     int iobase = 0x3f0;
+    int isairq = 6;
 
     register_ioport_read(iobase + 0x01, 5, 1,
                          &fdctrl_read_port, fdctrl);
@@ -1978,7 +1978,7 @@ static int isabus_fdc_init1(ISADevice *dev)
                           &fdctrl_write_port, fdctrl);
     register_ioport_write(iobase + 0x07, 1, 1,
                           &fdctrl_write_port, fdctrl);
-    isa_init_irq(&isa->busdev, &fdctrl->irq);
+    isa_init_irq(&isa->busdev, &fdctrl->irq, isairq);
 
     return fdctrl_init_common(fdctrl);
 }
diff --git a/hw/isa-bus.c b/hw/isa-bus.c
index fde066a..bfd0fff 100644
--- a/hw/isa-bus.c
+++ b/hw/isa-bus.c
@@ -57,20 +57,6 @@ void isa_bus_irqs(qemu_irq *irqs)
     isabus->irqs = irqs;
 }
 
-void isa_connect_irq(ISADevice *dev, int devnr, int isairq)
-{
-    assert(devnr >= 0 && devnr < dev->nirqs);
-    if (isabus->assigned & (1 << isairq)) {
-        fprintf(stderr, "isa irq %d already assigned\n", isairq);
-        exit(1);
-    }
-    if (dev->irqs[devnr]) {
-        isabus->assigned |= (1 << isairq);
-        dev->isairq[devnr] = isairq;
-        *dev->irqs[devnr] = isabus->irqs[isairq];
-    }
-}
-
 /*
  * isa_reserve_irq() reserves the ISA irq and returns the corresponding
  * qemu_irq entry for the i8259.
@@ -92,10 +78,16 @@ qemu_irq isa_reserve_irq(int isairq)
     return isabus->irqs[isairq];
 }
 
-void isa_init_irq(ISADevice *dev, qemu_irq *p)
+void isa_init_irq(ISADevice *dev, qemu_irq *p, int isairq)
 {
-    assert(dev->nirqs < ARRAY_SIZE(dev->irqs));
-    dev->irqs[dev->nirqs] = p;
+    assert(dev->nirqs < ARRAY_SIZE(dev->isairq));
+    if (isabus->assigned & (1 << isairq)) {
+        fprintf(stderr, "isa irq %d already assigned\n", isairq);
+        exit(1);
+    }
+    isabus->assigned |= (1 << isairq);
+    dev->isairq[dev->nirqs] = isairq;
+    *p = isabus->irqs[isairq];
     dev->nirqs++;
 }
 
@@ -117,25 +109,17 @@ void isa_qdev_register(ISADeviceInfo *info)
     qdev_register(&info->qdev);
 }
 
-ISADevice *isa_create_simple(const char *name, uint32_t irq, uint32 irq2)
+ISADevice *isa_create_simple(const char *name)
 {
     DeviceState *dev;
-    ISADevice *isa;
 
     if (!isabus) {
         fprintf(stderr, "Tried to create isa device %s with no isa bus present.\n", name);
         return NULL;
     }
     dev = qdev_create(&isabus->qbus, name);
-    isa = DO_UPCAST(ISADevice, qdev, dev);
     qdev_init(dev);
-    if (irq != -1) {
-        isa_connect_irq(isa, 0, irq);
-    }
-    if (irq2 != -1) {
-        isa_connect_irq(isa, 1, irq2);
-    }
-    return isa;
+    return DO_UPCAST(ISADevice, qdev, dev);
 }
 
 static void isabus_dev_print(Monitor *mon, DeviceState *dev, int indent)
diff --git a/hw/isa.h b/hw/isa.h
index 24c5c66..4582ff9 100644
--- a/hw/isa.h
+++ b/hw/isa.h
@@ -13,7 +13,6 @@ typedef struct ISADeviceInfo ISADeviceInfo;
 struct ISADevice {
     DeviceState qdev;
     uint32_t isairq[2];
-    qemu_irq *irqs[2];
     int nirqs;
 };
 
@@ -25,11 +24,10 @@ struct ISADeviceInfo {
 
 ISABus *isa_bus_new(DeviceState *dev);
 void isa_bus_irqs(qemu_irq *irqs);
-void isa_connect_irq(ISADevice *dev, int devirq, int isairq);
 qemu_irq isa_reserve_irq(int isairq);
-void isa_init_irq(ISADevice *dev, qemu_irq *p);
+void isa_init_irq(ISADevice *dev, qemu_irq *p, int isairq);
 void isa_qdev_register(ISADeviceInfo *info);
-ISADevice *isa_create_simple(const char *name, uint32_t irq, uint32_t irq2);
+ISADevice *isa_create_simple(const char *name);
 
 extern target_phys_addr_t isa_mem_base;
 
diff --git a/hw/mips_malta.c b/hw/mips_malta.c
index 3222e16..32c7102 100644
--- a/hw/mips_malta.c
+++ b/hw/mips_malta.c
@@ -921,7 +921,7 @@ void mips_malta_init (ram_addr_t ram_size,
     DMA_init(0);
 
     /* Super I/O */
-    isa_dev = isa_create_simple("i8042", 1, 12);
+    isa_dev = isa_create_simple("i8042");
  
     rtc_state = rtc_init(0x70, isa_reserve_irq(8), 2000);
     serial_init(0x3f8, isa_reserve_irq(4), 115200, serial_hds[0]);
diff --git a/hw/pc.c b/hw/pc.c
index 0219961..e1ffaa4 100644
--- a/hw/pc.c
+++ b/hw/pc.c
@@ -1373,7 +1373,7 @@ static void pc_init1(ram_addr_t ram_size,
         }
     }
 
-    isa_dev = isa_create_simple("i8042", 1, 12);
+    isa_dev = isa_create_simple("i8042");
     DMA_init(0);
 #ifdef HAS_AUDIO
     audio_init(pci_enabled ? pci_bus : NULL, isa_irq);
diff --git a/hw/pckbd.c b/hw/pckbd.c
index b4b65a6..5acf4a6 100644
--- a/hw/pckbd.c
+++ b/hw/pckbd.c
@@ -450,8 +450,8 @@ static int i8042_initfn(ISADevice *dev)
 {
     KBDState *s = &(DO_UPCAST(ISAKBDState, dev, dev)->kbd);
 
-    isa_init_irq(dev, &s->irq_kbd);
-    isa_init_irq(dev, &s->irq_mouse);
+    isa_init_irq(dev, &s->irq_kbd, 1);
+    isa_init_irq(dev, &s->irq_mouse, 12);
 
     kbd_reset(s);
     register_savevm("pckbd", 0, 3, kbd_save, kbd_load, s);
diff --git a/hw/sun4u.c b/hw/sun4u.c
index b71df1f..ffda4cd 100644
--- a/hw/sun4u.c
+++ b/hw/sun4u.c
@@ -617,7 +617,7 @@ static void sun4uv_init(ram_addr_t RAM_size,
 
     pci_cmd646_ide_init(pci_bus, hd, 1);
 
-    isa_create_simple("i8042", 1, 12);
+    isa_create_simple("i8042");
     for(i = 0; i < MAX_FD; i++) {
         dinfo = drive_get(IF_FLOPPY, 0, i);
         fd[i] = dinfo ? dinfo->bdrv : NULL;
