qdev: Convert uses of qdev_set_parent_bus() with Coccinelle

In addition to the qdev_create() patterns converted so far, we have a
qdev_set_parent_bus() pattern.  Mostly when we embed a device in a
parent device rather than allocating it on the heap.

This pattern also puts devices in the dangerous "no QOM parent, but
plugged into bus" state I explained in recent commit "qdev: New
qdev_new(), qdev_realize(), etc."

Apply same solution: convert to qdev_realize().  Coccinelle script:

    @@
    expression dev, bus, errp;
    symbol true;
    @@
    -    qdev_set_parent_bus(DEVICE(dev), bus);
         ...
    -    object_property_set_bool(OBJECT(dev), true, "realized", errp);
    +    qdev_realize(DEVICE(dev), bus, errp);

    @ depends on !(file in "qdev-monitor.c") && !(file in "hw/core/qdev.c")@
    expression dev, bus, errp;
    symbol true;
    @@
    -    qdev_set_parent_bus(dev, bus);
         ...
    -    object_property_set_bool(OBJECT(dev), true, "realized", errp);
    +    qdev_realize(dev, bus, errp);

    @@
    expression dev, bus;
    symbol true;
    @@
    -    qdev_set_parent_bus(DEVICE(dev), bus);
         ...
    -    qdev_init_nofail(DEVICE(dev));
    +    qdev_realize(DEVICE(dev), bus, &error_fatal);

Unconverted uses of qdev_set_parent_bus() remain.  They'll be
converted later in this series.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20200610053247.1583243-12-armbru@redhat.com>
[Also convert new hw/virtio/vhost-user-vsock-pci.c]

1 files changed, 1 insertions, 2 deletions

diff --git a/hw/isa/piix4.c b/hw/isa/piix4.c
index 9a10fb9b3c..f634bcb2d1 100644
--- a/hw/isa/piix4.c
+++ b/hw/isa/piix4.c
@@ -182,9 +182,8 @@ static void piix4_realize(PCIDevice *dev, Error **errp)
     i8257_dma_init(isa_bus, 0);
 
     /* RTC */
-    qdev_set_parent_bus(DEVICE(&s->rtc), BUS(isa_bus));
     qdev_prop_set_int32(DEVICE(&s->rtc), "base_year", 2000);
-    object_property_set_bool(OBJECT(&s->rtc), true, "realized", &err);
+    qdev_realize(DEVICE(&s->rtc), BUS(isa_bus), &err);
     if (err) {
         error_propagate(errp, err);
         return;