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qdev: Deprecated qdev_init() is finally unused, drop

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qdev_init() is a wrapper around setting property "realized" to true,
plus error handling that passes errors to qerror_report_err().
qerror_report_err() is a transitional interface to help with
converting existing monitor commands to QMP.  It should not be used
elsewhere.

All code has been modernized to avoid qdev_init() and its
inappropriate error handling.  We can finally drop it.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
This commit is contained in:
Markus Armbruster 2015-06-19 16:17:22 +02:00 committed by Andreas Färber
parent a3590dacce
commit 0210afe669
2 changed files with 17 additions and 33 deletions
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47
hw/core/qdev.c
View File

@ -126,9 +126,9 @@ void qbus_set_bus_hotplug_handler(BusState *bus, Error **errp)
qbus_set_hotplug_handler_internal(bus, OBJECT(bus), errp);
}
/* Create a new device. This only initializes the device state structure
and allows properties to be set. qdev_init should be called to
initialize the actual device emulation. */
/* Create a new device. This only initializes the device state
structure and allows properties to be set. The device still needs
to be realized. See qdev-core.h. */
DeviceState *qdev_create(BusState *bus, const char *name)
{
DeviceState *dev;
@ -168,27 +168,6 @@ DeviceState *qdev_try_create(BusState *bus, const char *type)
return dev;
}
/* Initialize a device. Device properties should be set before calling
this function. IRQs and MMIO regions should be connected/mapped after
calling this function.
On failure, destroy the device and return negative value.
Return 0 on success. */
int qdev_init(DeviceState *dev)
{
Error *local_err = NULL;
assert(!dev->realized);
object_property_set_bool(OBJECT(dev), true, "realized", &local_err);
if (local_err != NULL) {
qerror_report_err(local_err);
error_free(local_err);
object_unparent(OBJECT(dev));
return -1;
}
return 0;
}
static QTAILQ_HEAD(device_listeners, DeviceListener) device_listeners
= QTAILQ_HEAD_INITIALIZER(device_listeners);
@ -364,13 +343,19 @@ void qdev_simple_device_unplug_cb(HotplugHandler *hotplug_dev,
object_unparent(OBJECT(dev));
}
/* Like qdev_init(), but terminate program via error_report() instead of
returning an error value. This is okay during machine creation.
Don't use for hotplug, because there callers need to recover from
failure. Exception: if you know the device's init() callback can't
fail, then qdev_init_nofail() can't fail either, and is therefore
usable even then. But relying on the device implementation that
way is somewhat unclean, and best avoided. */
/*
* Realize @dev.
* Device properties should be set before calling this function. IRQs
* and MMIO regions should be connected/mapped after calling this
* function.
* On failure, report an error with error_report() and terminate the
* program. This is okay during machine creation. Don't use for
* hotplug, because there callers need to recover from failure.
* Exception: if you know the device's init() callback can't fail,
* then qdev_init_nofail() can't fail either, and is therefore usable
* even then. But relying on the device implementation that way is
* somewhat unclean, and best avoided.
*/
void qdev_init_nofail(DeviceState *dev)
{
Error *err = NULL;

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

@ -66,7 +66,7 @@ struct VMStateDescription;
* After successful realization, setting static properties will fail.
*
* As an interim step, the #DeviceState:realized property is set by deprecated
* functions qdev_init() and qdev_init_nofail().
* function qdev_init_nofail().
* In the future, devices will propagate this state change to their children
* and along busses they expose.
* The point in time will be deferred to machine creation, so that values
@ -262,7 +262,6 @@ typedef struct GlobalProperty {
DeviceState *qdev_create(BusState *bus, const char *name);
DeviceState *qdev_try_create(BusState *bus, const char *name);
int qdev_init(DeviceState *dev) QEMU_WARN_UNUSED_RESULT;
void qdev_init_nofail(DeviceState *dev);
void qdev_set_legacy_instance_id(DeviceState *dev, int alias_id,
int required_for_version);