From 9bc6bfdf67287fcf5435f22f68e902bb19831243 Mon Sep 17 00:00:00 2001 From: Markus Armbruster Date: Tue, 30 Jun 2020 11:03:39 +0200 Subject: [PATCH] qdev: Drop qbus_set_hotplug_handler() parameter @errp MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 Cc: "Daniel P. Berrangé" Cc: Eduardo Habkost Signed-off-by: Markus Armbruster Message-Id: <20200630090351.1247703-15-armbru@redhat.com> --- hw/acpi/pcihp.c | 3 +-- hw/acpi/piix4.c | 2 +- hw/char/virtio-serial-bus.c | 4 ++-- hw/core/bus.c | 6 +++--- hw/pci/pcie.c | 2 +- hw/pci/shpc.c | 2 +- hw/ppc/spapr.c | 3 +-- hw/ppc/spapr_pci.c | 4 ++-- hw/s390x/ap-bridge.c | 2 +- hw/s390x/css-bridge.c | 2 +- hw/s390x/s390-pci-bus.c | 14 +++----------- hw/scsi/virtio-scsi.c | 4 ++-- hw/scsi/vmw_pvscsi.c | 2 +- hw/usb/dev-smartcard-reader.c | 2 +- include/hw/qdev-core.h | 3 +-- 15 files changed, 22 insertions(+), 33 deletions(-) diff --git a/hw/acpi/pcihp.c b/hw/acpi/pcihp.c index 33ea2b76ae..9e31ab2da4 100644 --- a/hw/acpi/pcihp.c +++ b/hw/acpi/pcihp.c @@ -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)); } diff --git a/hw/acpi/piix4.c b/hw/acpi/piix4.c index 630ca6ec87..283422e0d3 100644 --- a/hw/acpi/piix4.c +++ b/hw/acpi/piix4.c @@ -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); } diff --git a/hw/char/virtio-serial-bus.c b/hw/char/virtio-serial-bus.c index 262089c0c9..f9a4428bd6 100644 --- a/hw/char/virtio-serial-bus.c +++ b/hw/char/virtio-serial-bus.c @@ -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); } diff --git a/hw/core/bus.c b/hw/core/bus.c index 8d4e810d7f..544dd8a6fa 100644 --- a/hw/core/bus.c +++ b/hw/core/bus.c @@ -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, diff --git a/hw/pci/pcie.c b/hw/pci/pcie.c index 086d0dfceb..5b48bae0f6 100644 --- a/hw/pci/pcie.c +++ b/hw/pci/pcie.c @@ -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) diff --git a/hw/pci/shpc.c b/hw/pci/shpc.c index 99d65d5c4c..b00dce629c 100644 --- a/hw/pci/shpc.c +++ b/hw/pci/shpc.c @@ -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; diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c index 44fd578ea9..f6f034d039 100644 --- a/hw/ppc/spapr.c +++ b/hw/ppc/spapr.c @@ -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); diff --git a/hw/ppc/spapr_pci.c b/hw/ppc/spapr_pci.c index 329002ac04..0f00e2421f 100644 --- a/hw/ppc/spapr_pci.c +++ b/hw/ppc/spapr_pci.c @@ -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. diff --git a/hw/s390x/ap-bridge.c b/hw/s390x/ap-bridge.c index c4e3188ad6..8bcf8ece9d 100644 --- a/hw/s390x/ap-bridge.c +++ b/hw/s390x/ap-bridge.c @@ -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) diff --git a/hw/s390x/css-bridge.c b/hw/s390x/css-bridge.c index e37a54d3f2..9d793d671e 100644 --- a/hw/s390x/css-bridge.c +++ b/hw/s390x/css-bridge.c @@ -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); diff --git a/hw/s390x/s390-pci-bus.c b/hw/s390x/s390-pci-bus.c index a13978bb37..142e52a8ff 100644 --- a/hw/s390x/s390-pci-bus.c +++ b/hw/s390x/s390-pci-bus.c @@ -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, diff --git a/hw/scsi/virtio-scsi.c b/hw/scsi/virtio-scsi.c index 9b72094a61..b49775269e 100644 --- a/hw/scsi/virtio-scsi.c +++ b/hw/scsi/virtio-scsi.c @@ -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); } diff --git a/hw/scsi/vmw_pvscsi.c b/hw/scsi/vmw_pvscsi.c index ec5bf9ea34..df07ab6bfb 100644 --- a/hw/scsi/vmw_pvscsi.c +++ b/hw/scsi/vmw_pvscsi.c @@ -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); } diff --git a/hw/usb/dev-smartcard-reader.c b/hw/usb/dev-smartcard-reader.c index ada18c1983..fcfe216594 100644 --- a/hw/usb/dev-smartcard-reader.c +++ b/hw/usb/dev-smartcard-reader.c @@ -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; diff --git a/include/hw/qdev-core.h b/include/hw/qdev-core.h index 78acdeaed6..fe78073c70 100644 --- a/include/hw/qdev-core.h +++ b/include/hw/qdev-core.h @@ -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)