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versatile: remove cannot_destroy_with_object_finalize_yet 

cannot_destroy_with_object_finalize_yet was added by 4c315c2
("qdev: Protect device-list-properties against broken devices")
because "realview_pci" and "versatile_pci" were hanging
during "device-list-properties" cleanup (an infinite loop in
bus_unparent()).

We have this problem because the child is not removed from
the list of the PCI bus children because it has no defined parent:
qdev_set_parent_bus() set the device parent_bus pointer to bus, and
adds the device in the bus children list, but doesn't update the
device parent pointer.

To fix the problem, move all the involved parts to the realize function.

Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Message-Id: <20170414083717.13641-4-lvivier@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Acked-by: Peter Maydell <peter.maydell@linaro.org>
[Commit message tweaked]
Signed-off-by: Markus Armbruster <armbru@redhat.com>
This commit is contained in:
Laurent Vivier 2017-04-14 10:37:16 +02:00 committed by Markus Armbruster
parent 40fda982f2
commit d28fca153b
1 changed files with 12 additions and 23 deletions
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35
hw/pci-host/versatile.c
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@ -380,20 +380,8 @@ static void pci_vpb_reset(DeviceState *d)
static void pci_vpb_init(Object *obj)
{
PCIHostState *h = PCI_HOST_BRIDGE(obj);
PCIVPBState *s = PCI_VPB(obj);
memory_region_init(&s->pci_io_space, OBJECT(s), "pci_io", 1ULL << 32);
memory_region_init(&s->pci_mem_space, OBJECT(s), "pci_mem", 1ULL << 32);
pci_bus_new_inplace(&s->pci_bus, sizeof(s->pci_bus), DEVICE(obj), "pci",
&s->pci_mem_space, &s->pci_io_space,
PCI_DEVFN(11, 0), TYPE_PCI_BUS);
h->bus = &s->pci_bus;
object_initialize(&s->pci_dev, sizeof(s->pci_dev), TYPE_VERSATILE_PCI_HOST);
qdev_set_parent_bus(DEVICE(&s->pci_dev), BUS(&s->pci_bus));
/* Window sizes for VersatilePB; realview_pci's init will override */
s->mem_win_size[0] = 0x0c000000;
s->mem_win_size[1] = 0x10000000;
@ -403,10 +391,22 @@ static void pci_vpb_init(Object *obj)
static void pci_vpb_realize(DeviceState *dev, Error **errp)
{
PCIVPBState *s = PCI_VPB(dev);
PCIHostState *h = PCI_HOST_BRIDGE(dev);
SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
pci_map_irq_fn mapfn;
int i;
memory_region_init(&s->pci_io_space, OBJECT(s), "pci_io", 1ULL << 32);
memory_region_init(&s->pci_mem_space, OBJECT(s), "pci_mem", 1ULL << 32);
pci_bus_new_inplace(&s->pci_bus, sizeof(s->pci_bus), dev, "pci",
&s->pci_mem_space, &s->pci_io_space,
PCI_DEVFN(11, 0), TYPE_PCI_BUS);
h->bus = &s->pci_bus;
object_initialize(&s->pci_dev, sizeof(s->pci_dev), TYPE_VERSATILE_PCI_HOST);
qdev_set_parent_bus(DEVICE(&s->pci_dev), BUS(&s->pci_bus));
for (i = 0; i < 4; i++) {
sysbus_init_irq(sbd, &s->irq[i]);
}
@ -503,8 +503,6 @@ static void pci_vpb_class_init(ObjectClass *klass, void *data)
dc->reset = pci_vpb_reset;
dc->vmsd = &pci_vpb_vmstate;
dc->props = pci_vpb_properties;
/* Reason: object_unref() hangs */
dc->cannot_destroy_with_object_finalize_yet = true;
}
static const TypeInfo pci_vpb_info = {
@ -526,19 +524,10 @@ static void pci_realview_init(Object *obj)
s->mem_win_size[2] = 0x08000000;
}
static void pci_realview_class_init(ObjectClass *class, void *data)
{
DeviceClass *dc = DEVICE_CLASS(class);
/* Reason: object_unref() hangs */
dc->cannot_destroy_with_object_finalize_yet = true;
}
static const TypeInfo pci_realview_info = {
.name = "realview_pci",
.parent = TYPE_VERSATILE_PCI,
.instance_init = pci_realview_init,
.class_init = pci_realview_class_init,
};
static void versatile_pci_register_types(void)