mac_via: Fix to realize "mos6522-q800-via*" devices

mac_via_realize() creates a "mos6522-q800-via1" and a
"mos6522-q800-via2" device, but neglects to realize them.  Affects
machine q800.

In theory, a device becomes real only on realize.  In practice, the
transition from unreal to real is a fuzzy one.  The work to make a
device real can be spread between realize methods (fine),
instance_init methods (wrong), and board code wiring up the device
(fine as long as it effectively happens on realize).  Depending on
what exactly is done where, a device can work even when we neglect
to realize it.

These two appear to work.  Nevertheless, it's a clear misuse of the
interface.  Even when it works today (more or less by chance), it can
break tomorrow.

Fix by realizing them right away.

Fixes: 6dca62a0000f95e0b7020aa00d0ca9b2c421f341
Cc: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Message-Id: <20200609122339.937862-9-armbru@redhat.com>
Tested-by: Laurent Vivier <laurent@vivier.eu>
Acked-by: Laurent Vivier <laurent@vivier.eu>

diff --git a/hw/misc/mac_via.c b/hw/misc/mac_via.c
index e05623d73003ed8a713e7b882257157db3fe8d52..82614c155a748076a45aef936d6382ad07e71cd3 100644 (file)
--- a/hw/misc/mac_via.c
+++ b/hw/misc/mac_via.c
@@ -890,6 +890,11 @@ static void mac_via_realize(DeviceState *dev, Error **errp)
     object_property_add_alias(OBJECT(dev), "irq[1]", OBJECT(ms),
                               SYSBUS_DEVICE_GPIO_IRQ "[0]");
 
+    object_property_set_bool(OBJECT(&m->mos6522_via1), true, "realized",
+                             &error_abort);
+    object_property_set_bool(OBJECT(&m->mos6522_via2), true, "realized",
+                             &error_abort);
+
     /* Pass through mos6522 input IRQs */
     qdev_pass_gpios(DEVICE(&m->mos6522_via1), dev, "via1-irq");
     qdev_pass_gpios(DEVICE(&m->mos6522_via2), dev, "via2-irq");