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-rw-r--r--hw/isa/isa-bus.c14
1 files changed, 10 insertions, 4 deletions
diff --git a/hw/isa/isa-bus.c b/hw/isa/isa-bus.c
index 7820068..cffaa35 100644
--- a/hw/isa/isa-bus.c
+++ b/hw/isa/isa-bus.c
@@ -131,13 +131,17 @@ void isa_register_ioport(ISADevice *dev, MemoryRegion *io, uint16_t start)
isa_init_ioport(dev, start);
}
-void isa_register_portio_list(ISADevice *dev,
- PortioList *piolist, uint16_t start,
- const MemoryRegionPortio *pio_start,
- void *opaque, const char *name)
+int isa_register_portio_list(ISADevice *dev,
+ PortioList *piolist, uint16_t start,
+ const MemoryRegionPortio *pio_start,
+ void *opaque, const char *name)
{
assert(piolist && !piolist->owner);
+ if (!isabus) {
+ return -ENODEV;
+ }
+
/* START is how we should treat DEV, regardless of the actual
contents of the portio array. This is how the old code
actually handled e.g. the FDC device. */
@@ -145,6 +149,8 @@ void isa_register_portio_list(ISADevice *dev,
portio_list_init(piolist, OBJECT(dev), pio_start, opaque, name);
portio_list_add(piolist, isabus->address_space_io, start);
+
+ return 0;
}
static void isa_device_init(Object *obj)