hw/isa: Drop unused attributes from ISADevice

Now that the last users of ISADevice::isairq[] have been resolved during the
previous commits, it can be removed for good.

Signed-off-by: Bernhard Beschow <shentey@gmail.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20220301220037.76555-7-shentey@gmail.com>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20220307134353.1950-13-philippe.mathieu.daude@gmail.com>
Reviewed-by: Bernhard Beschow <shentey@gmail.com>

hw/isa/isa-bus.c

@@ -87,11 +87,7 @@ qemu_irq isa_get_irq(ISADevice *dev, unsigned isairq)
 
 void isa_init_irq(ISADevice *dev, qemu_irq *p, unsigned isairq)
 {
-    assert(dev->nirqs < ARRAY_SIZE(dev->isairq));
-    assert(isairq < ISA_NUM_IRQS);
-    dev->isairq[dev->nirqs] = isairq;
     *p = isa_get_irq(dev, isairq);
-    dev->nirqs++;
 }
 
 void isa_connect_gpio_out(ISADevice *isadev, int gpioirq, unsigned isairq)
@@ -150,14 +146,6 @@ int isa_register_portio_list(ISADevice *dev,
     return 0;
 }
 
-static void isa_device_init(Object *obj)
-{
-    ISADevice *dev = ISA_DEVICE(obj);
-
-    dev->isairq[0] = -1;
-    dev->isairq[1] = -1;
-}
-
 ISADevice *isa_new(const char *name)
 {
     return ISA_DEVICE(qdev_new(name));
@@ -244,7 +232,6 @@ static const TypeInfo isa_device_type_info = {
     .name = TYPE_ISA_DEVICE,
     .parent = TYPE_DEVICE,
     .instance_size = sizeof(ISADevice),
-    .instance_init = isa_device_init,
     .abstract = true,
     .class_size = sizeof(ISADeviceClass),
     .class_init = isa_device_class_init,

include/hw/isa/isa.h

@@ -83,8 +83,6 @@ struct ISADevice {
     DeviceState parent_obj;
     /*< public >*/
 
-    int8_t isairq[2];      /* -1 = unassigned */
-    int nirqs;
     int ioport_id;
 };