diff options
Diffstat (limited to 'include/hw/qdev-core.h')
| -rw-r--r-- | include/hw/qdev-core.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/include/hw/qdev-core.h b/include/hw/qdev-core.h index 2d441d1fb2..1d2bf5f37d 100644 --- a/include/hw/qdev-core.h +++ b/include/hw/qdev-core.h @@ -381,6 +381,25 @@ bool qdev_realize(DeviceState *dev, BusState *bus, Error **errp); * would be incorrect. For that use case you want qdev_realize(). */ bool qdev_realize_and_unref(DeviceState *dev, BusState *bus, Error **errp); +/** + * qdev_unrealize: Unrealize a device + * @dev: device to unrealize + * + * This function will "unrealize" a device, which is the first phase + * of correctly destroying a device that has been realized. It will: + * + * - unrealize any child buses by calling qbus_unrealize() + * (this will recursively unrealize any devices on those buses) + * - call the the unrealize method of @dev + * + * The device can then be freed by causing its reference count to go + * to zero. + * + * Warning: most devices in QEMU do not expect to be unrealized. Only + * devices which are hot-unpluggable should be unrealized (as part of + * the unplugging process); all other devices are expected to last for + * the life of the simulation and should not be unrealized and freed. + */ void qdev_unrealize(DeviceState *dev); void qdev_set_legacy_instance_id(DeviceState *dev, int alias_id, int required_for_version); |