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qdev: Drop qbus_set_hotplug_handler() parameter @errp 

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
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
hw/acpi/pcihp.c
View File

@ -246,8 +246,7 @@ void acpi_pcihp_device_plug_cb(HotplugHandler *hotplug_dev, AcpiPciHpState *s,
object_dynamic_cast(OBJECT(dev), TYPE_PCI_BRIDGE)) {
PCIBus *sec = pci_bridge_get_sec_bus(PCI_BRIDGE(pdev));
qbus_set_hotplug_handler(BUS(sec), OBJECT(hotplug_dev),
&error_abort);
qbus_set_hotplug_handler(BUS(sec), OBJECT(hotplug_dev));
/* We don't have to overwrite any other hotplug handler yet */
assert(QLIST_EMPTY(&sec->child));
}

2
hw/acpi/piix4.c
View File

@ -506,7 +506,7 @@ static void piix4_pm_realize(PCIDevice *dev, Error **errp)
piix4_acpi_system_hot_add_init(pci_address_space_io(dev),
pci_get_bus(dev), s);
qbus_set_hotplug_handler(BUS(pci_get_bus(dev)), OBJECT(s), &error_abort);
qbus_set_hotplug_handler(BUS(pci_get_bus(dev)), OBJECT(s));
piix4_pm_add_propeties(s);
}

4
hw/char/virtio-serial-bus.c
View File

@ -1056,7 +1056,7 @@ static void virtio_serial_device_realize(DeviceState *dev, Error **errp)
/* Spawn a new virtio-serial bus on which the ports will ride as devices */
qbus_create_inplace(&vser->bus, sizeof(vser->bus), TYPE_VIRTIO_SERIAL_BUS,
dev, vdev->bus_name);
qbus_set_hotplug_handler(BUS(&vser->bus), OBJECT(vser), errp);
qbus_set_hotplug_handler(BUS(&vser->bus), OBJECT(vser));
vser->bus.vser = vser;
QTAILQ_INIT(&vser->ports);
@ -1147,7 +1147,7 @@ static void virtio_serial_device_unrealize(DeviceState *dev)
g_free(vser->post_load);
}
qbus_set_hotplug_handler(BUS(&vser->bus), NULL, &error_abort);
qbus_set_hotplug_handler(BUS(&vser->bus), NULL);
virtio_cleanup(vdev);
}

6
hw/core/bus.c
View File

@ -23,15 +23,15 @@
#include "qemu/module.h"
#include "qapi/error.h"
void qbus_set_hotplug_handler(BusState *bus, Object *handler, Error **errp)
void qbus_set_hotplug_handler(BusState *bus, Object *handler)
{
object_property_set_link(OBJECT(bus), handler,
QDEV_HOTPLUG_HANDLER_PROPERTY, errp);
QDEV_HOTPLUG_HANDLER_PROPERTY, &error_abort);
}
void qbus_set_bus_hotplug_handler(BusState *bus)
{
qbus_set_hotplug_handler(bus, OBJECT(bus), &error_abort);
qbus_set_hotplug_handler(bus, OBJECT(bus));
}
int qbus_walk_children(BusState *bus,

2
hw/pci/pcie.c
View File

@ -574,7 +574,7 @@ void pcie_cap_slot_init(PCIDevice *dev, PCIESlot *s)
dev->exp.hpev_notified = false;
qbus_set_hotplug_handler(BUS(pci_bridge_get_sec_bus(PCI_BRIDGE(dev))),
OBJECT(dev), NULL);
OBJECT(dev));
}
void pcie_cap_slot_reset(PCIDevice *dev)

2
hw/pci/shpc.c
View File

@ -649,7 +649,7 @@ int shpc_init(PCIDevice *d, PCIBus *sec_bus, MemoryRegion *bar,
shpc_cap_update_dword(d);
memory_region_add_subregion(bar, offset, &shpc->mmio);
qbus_set_hotplug_handler(BUS(sec_bus), OBJECT(d), NULL);
qbus_set_hotplug_handler(BUS(sec_bus), OBJECT(d));
d->cap_present |= QEMU_PCI_CAP_SHPC;
return 0;

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.

2
hw/s390x/ap-bridge.c
View File

@ -58,7 +58,7 @@ void s390_init_ap(void)
bus = qbus_create(TYPE_AP_BUS, dev, TYPE_AP_BUS);
/* Enable hotplugging */
qbus_set_hotplug_handler(bus, OBJECT(dev), &error_abort);
qbus_set_hotplug_handler(bus, OBJECT(dev));
}
static void ap_bridge_class_init(ObjectClass *oc, void *data)

2
hw/s390x/css-bridge.c
View File

@ -111,7 +111,7 @@ VirtualCssBus *virtual_css_bus_init(void)
cbus = VIRTUAL_CSS_BUS(bus);
/* Enable hotplugging */
qbus_set_hotplug_handler(bus, OBJECT(dev), &error_abort);
qbus_set_hotplug_handler(bus, OBJECT(dev));
css_register_io_adapters(CSS_IO_ADAPTER_VIRTIO, true, false,
0, &error_abort);

14
hw/s390x/s390-pci-bus.c
View File

@ -751,19 +751,11 @@ static void s390_pcihost_realize(DeviceState *dev, Error **errp)
pci_setup_iommu(b, s390_pci_dma_iommu, s);
bus = BUS(b);
qbus_set_hotplug_handler(bus, OBJECT(dev), &local_err);
if (local_err) {
error_propagate(errp, local_err);
return;
}
qbus_set_hotplug_handler(bus, OBJECT(dev));
phb->bus = b;
s->bus = S390_PCI_BUS(qbus_create(TYPE_S390_PCI_BUS, dev, NULL));
qbus_set_hotplug_handler(BUS(s->bus), OBJECT(dev), &local_err);
if (local_err) {
error_propagate(errp, local_err);
return;
}
qbus_set_hotplug_handler(BUS(s->bus), OBJECT(dev));
s->iommu_table = g_hash_table_new_full(g_int64_hash, g_int64_equal,
NULL, g_free);
@ -921,7 +913,7 @@ static void s390_pcihost_plug(HotplugHandler *hotplug_dev, DeviceState *dev,
pci_bridge_map_irq(pb, dev->id, s390_pci_map_irq);
pci_setup_iommu(&pb->sec_bus, s390_pci_dma_iommu, s);
qbus_set_hotplug_handler(BUS(&pb->sec_bus), OBJECT(s), errp);
qbus_set_hotplug_handler(BUS(&pb->sec_bus), OBJECT(s));
if (dev->hotplugged) {
pci_default_write_config(pdev, PCI_PRIMARY_BUS,

4
hw/scsi/virtio-scsi.c
View File

@ -934,7 +934,7 @@ static void virtio_scsi_device_realize(DeviceState *dev, Error **errp)
scsi_bus_new(&s->bus, sizeof(s->bus), dev,
&virtio_scsi_scsi_info, vdev->bus_name);
/* override default SCSI bus hotplug-handler, with virtio-scsi's one */
qbus_set_hotplug_handler(BUS(&s->bus), OBJECT(dev), &error_abort);
qbus_set_hotplug_handler(BUS(&s->bus), OBJECT(dev));
virtio_scsi_dataplane_setup(s, errp);
}
@ -958,7 +958,7 @@ static void virtio_scsi_device_unrealize(DeviceState *dev)
{
VirtIOSCSI *s = VIRTIO_SCSI(dev);
qbus_set_hotplug_handler(BUS(&s->bus), NULL, &error_abort);
qbus_set_hotplug_handler(BUS(&s->bus), NULL);
virtio_scsi_common_unrealize(dev);
}

2
hw/scsi/vmw_pvscsi.c
View File

@ -1147,7 +1147,7 @@ pvscsi_realizefn(PCIDevice *pci_dev, Error **errp)
scsi_bus_new(&s->bus, sizeof(s->bus), DEVICE(pci_dev),
&pvscsi_scsi_info, NULL);
/* override default SCSI bus hotplug-handler, with pvscsi's one */
qbus_set_hotplug_handler(BUS(&s->bus), OBJECT(s), &error_abort);
qbus_set_hotplug_handler(BUS(&s->bus), OBJECT(s));
pvscsi_reset_state(s);
}

2
hw/usb/dev-smartcard-reader.c
View File

@ -1320,7 +1320,7 @@ static void ccid_realize(USBDevice *dev, Error **errp)
usb_desc_init(dev);
qbus_create_inplace(&s->bus, sizeof(s->bus), TYPE_CCID_BUS, DEVICE(dev),
NULL);
qbus_set_hotplug_handler(BUS(&s->bus), OBJECT(dev), &error_abort);
qbus_set_hotplug_handler(BUS(&s->bus), OBJECT(dev));
s->intr = usb_ep_get(dev, USB_TOKEN_IN, CCID_INT_IN_EP);
s->bulk = usb_ep_get(dev, USB_TOKEN_IN, CCID_BULK_IN_EP);
s->card = NULL;

3
include/hw/qdev-core.h
View File

@ -535,8 +535,7 @@ extern bool qdev_hot_removed;
char *qdev_get_dev_path(DeviceState *dev);
void qbus_set_hotplug_handler(BusState *bus, Object *handler, Error **errp);
void qbus_set_hotplug_handler(BusState *bus, Object *handler);
void qbus_set_bus_hotplug_handler(BusState *bus);
static inline bool qbus_is_hotpluggable(BusState *bus)