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qdev: Fix device_add bus assumptions

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Drop an unreachable fallback bus assignment to SysBus.

If no ,bus= is specified, only search busses recursively for bus type if
the DeviceClass has a bus_type specified. Handle resulting NULL cases.

Signed-off-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Andreas Färber <afaerber@suse.de>
Message-id: 1366077021-28882-1-git-send-email-afaerber@suse.de
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Andreas Färber 2013-04-16 03:50:21 +02:00 committed by Anthony Liguori
parent acbbc03661
commit 2f7bd829db
1 changed files with 8 additions and 8 deletions
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16
qdev-monitor.c
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@ -18,6 +18,7 @@
*/ */
#include "hw/qdev.h" #include "hw/qdev.h"
#include "hw/sysbus.h"
#include "monitor/monitor.h" #include "monitor/monitor.h"
#include "monitor/qdev.h" #include "monitor/qdev.h"
#include "qmp-commands.h" #include "qmp-commands.h"
@ -415,7 +416,7 @@ DeviceState *qdev_device_add(QemuOpts *opts)
DeviceClass *k; DeviceClass *k;
const char *driver, *path, *id; const char *driver, *path, *id;
DeviceState *qdev; DeviceState *qdev;
BusState *bus; BusState *bus = NULL;
driver = qemu_opt_get(opts, "driver"); driver = qemu_opt_get(opts, "driver");
if (!driver) { if (!driver) {
@ -453,7 +454,7 @@ DeviceState *qdev_device_add(QemuOpts *opts)
driver, object_get_typename(OBJECT(bus))); driver, object_get_typename(OBJECT(bus)));
return NULL; return NULL;
} }
} else { } else if (k->bus_type != NULL) {
bus = qbus_find_recursive(sysbus_get_default(), NULL, k->bus_type); bus = qbus_find_recursive(sysbus_get_default(), NULL, k->bus_type);
if (!bus) { if (!bus) {
qerror_report(QERR_NO_BUS_FOR_DEVICE, qerror_report(QERR_NO_BUS_FOR_DEVICE,
@ -461,18 +462,17 @@ DeviceState *qdev_device_add(QemuOpts *opts)
return NULL; return NULL;
} }
} }
if (qdev_hotplug && !bus->allow_hotplug) { if (qdev_hotplug && bus && !bus->allow_hotplug) {
qerror_report(QERR_BUS_NO_HOTPLUG, bus->name); qerror_report(QERR_BUS_NO_HOTPLUG, bus->name);
return NULL; return NULL;
} }
if (!bus) {
bus = sysbus_get_default();
}
/* create device, set properties */ /* create device, set properties */
qdev = DEVICE(object_new(driver)); qdev = DEVICE(object_new(driver));
qdev_set_parent_bus(qdev, bus);
if (bus) {
qdev_set_parent_bus(qdev, bus);
}
id = qemu_opts_id(opts); id = qemu_opts_id(opts);
if (id) { if (id) {