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qdev: Drop qbus_set_hotplug_handler() parameter @errp

Browse source 
qbus_set_hotplug_handler() is a simple wrapper around
object_property_set_link().

object_property_set_link() fails when the property doesn't exist, is
not settable, or its .check() method fails.  These are all programming
errors here, so passing &error_abort to qbus_set_hotplug_handler() is
appropriate.

Most of its callers do.  Exceptions:

* pcie_cap_slot_init(), shpc_init(), spapr_phb_realize() pass NULL,
  i.e. they ignore errors.

* spapr_machine_init() passes &error_fatal.

* s390_pcihost_realize(), virtio_serial_device_realize(),
  s390_pcihost_plug() pass the error to their callers.  The latter two
  keep going after the error, which looks wrong.

Drop the @errp parameter, and instead pass &error_abort to
object_property_set_link().

Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: "Daniel P. Berrangé" <berrange@redhat.com>
Cc: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20200630090351.1247703-15-armbru@redhat.com>
This commit is contained in:
Markus Armbruster 2020-06-30 11:03:39 +02:00
parent cd7c866074
commit 9bc6bfdf67
15 changed files with 22 additions and 33 deletions
Download patch file Download diff file Expand all files Collapse all files

3
hw/ppc/spapr.c
View file

@ -3033,8 +3033,7 @@ static void spapr_machine_init(MachineState *machine)
register_savevm_live("spapr/htab", VMSTATE_INSTANCE_ID_ANY, 1,
&savevm_htab_handlers, spapr);
qbus_set_hotplug_handler(sysbus_get_default(), OBJECT(machine),
&error_fatal);
qbus_set_hotplug_handler(sysbus_get_default(), OBJECT(machine));
qemu_register_boot_set(spapr_boot_set, spapr);

4
hw/ppc/spapr_pci.c
View file

@ -1719,7 +1719,7 @@ static void spapr_phb_unrealize(DeviceState *dev)
address_space_remove_listeners(&sphb->iommu_as);
address_space_destroy(&sphb->iommu_as);
qbus_set_hotplug_handler(BUS(phb->bus), NULL, &error_abort);
qbus_set_hotplug_handler(BUS(phb->bus), NULL);
pci_unregister_root_bus(phb->bus);
memory_region_del_subregion(get_system_memory(), &sphb->iowindow);
@ -1868,7 +1868,7 @@ static void spapr_phb_realize(DeviceState *dev, Error **errp)
bus->flags |= PCI_BUS_EXTENDED_CONFIG_SPACE;
}
phb->bus = bus;
qbus_set_hotplug_handler(BUS(phb->bus), OBJECT(sphb), NULL);
qbus_set_hotplug_handler(BUS(phb->bus), OBJECT(sphb));
/*
* Initialize PHB address space.