virtio: device_plugged() can fail
This patch passes error pointer to transport specific device_plugged()
callback. Through this way, device_plugged() can do some transport
specific check and fail. This will be uesd by following patches that
check the number of virtqueues against the transport limitation.
Cc: Cornelia Huck <cornelia.huck@de.ibm.com>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Alexander Graf <agraf@suse.de>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
diff --git a/hw/virtio/virtio-bus.c b/hw/virtio/virtio-bus.c
index fac452b..3926f7e 100644
--- a/hw/virtio/virtio-bus.c
+++ b/hw/virtio/virtio-bus.c
@@ -38,7 +38,7 @@
#endif
/* A VirtIODevice is being plugged */
-int virtio_bus_device_plugged(VirtIODevice *vdev)
+void virtio_bus_device_plugged(VirtIODevice *vdev, Error **errp)
{
DeviceState *qdev = DEVICE(vdev);
BusState *qbus = BUS(qdev_get_parent_bus(qdev));
@@ -49,13 +49,12 @@
DPRINTF("%s: plug device.\n", qbus->name);
if (klass->device_plugged != NULL) {
- klass->device_plugged(qbus->parent);
+ klass->device_plugged(qbus->parent, errp);
}
/* Get the features of the plugged device. */
assert(vdc->get_features != NULL);
vdev->host_features = vdc->get_features(vdev, vdev->host_features);
- return 0;
}
/* Reset the virtio_bus */
