From 5e96f5d2f8d2696ef7d2d8d7282c18fa6023470b Mon Sep 17 00:00:00 2001 From: Paolo Bonzini Date: Fri, 20 Sep 2013 13:59:08 +0200 Subject: virtio-bus: cleanup plug/unplug interface Right now we have these pairs: - virtio_bus_plug_device/virtio_bus_destroy_device. The first takes a VirtIODevice, the second takes a VirtioBusState - device_plugged/device_unplug callbacks in the VirtioBusClass (here it's just the naming that is inconsistent) - virtio_bus_destroy_device is not called by anyone (and since it calls qdev_free, it would be called by the proxies---but then the callback is useless since the proxies can do whatever they want before calling virtio_bus_destroy_device) And there is a k->init but no k->exit, hence virtio_device_exit is overwritten by subclasses (except virtio-9p). This cleans it up by: - renaming the device_unplug callback to device_unplugged - renaming virtio_bus_plug_device to virtio_bus_device_plugged, matching the callback name - renaming virtio_bus_destroy_device to virtio_bus_device_unplugged, removing the qdev_free, making it take a VirtIODevice and calling it from virtio_device_exit - adding a k->exit callback virtio_device_exit is still overwritten, the next patches will fix that. Cc: qemu-stable@nongnu.org Acked-by: Andreas Faerber Signed-off-by: Paolo Bonzini --- hw/virtio/virtio-bus.c | 19 +++++++++---------- hw/virtio/virtio.c | 7 ++++++- 2 files changed, 15 insertions(+), 11 deletions(-) (limited to 'hw/virtio') diff --git a/hw/virtio/virtio-bus.c b/hw/virtio/virtio-bus.c index 17dd06e1a1..eb77019267 100644 --- a/hw/virtio/virtio-bus.c +++ b/hw/virtio/virtio-bus.c @@ -37,8 +37,8 @@ do { printf("virtio_bus: " fmt , ## __VA_ARGS__); } while (0) #define DPRINTF(fmt, ...) do { } while (0) #endif -/* Plug the VirtIODevice */ -int virtio_bus_plug_device(VirtIODevice *vdev) +/* A VirtIODevice is being plugged */ +int virtio_bus_device_plugged(VirtIODevice *vdev) { DeviceState *qdev = DEVICE(vdev); BusState *qbus = BUS(qdev_get_parent_bus(qdev)); @@ -64,20 +64,19 @@ void virtio_bus_reset(VirtioBusState *bus) } } -/* Destroy the VirtIODevice */ -void virtio_bus_destroy_device(VirtioBusState *bus) +/* A VirtIODevice is being unplugged */ +void virtio_bus_device_unplugged(VirtIODevice *vdev) { - BusState *qbus = BUS(bus); - VirtioBusClass *klass = VIRTIO_BUS_GET_CLASS(bus); - VirtIODevice *vdev = virtio_bus_get_device(bus); + DeviceState *qdev = DEVICE(vdev); + BusState *qbus = BUS(qdev_get_parent_bus(qdev)); + VirtioBusClass *klass = VIRTIO_BUS_GET_CLASS(qbus); DPRINTF("%s: remove device.\n", qbus->name); if (vdev != NULL) { - if (klass->device_unplug != NULL) { - klass->device_unplug(qbus->parent); + if (klass->device_unplugged != NULL) { + klass->device_unplugged(qbus->parent); } - object_unparent(OBJECT(vdev)); } } diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c index 2f1e73bc75..965b2c0233 100644 --- a/hw/virtio/virtio.c +++ b/hw/virtio/virtio.c @@ -1158,14 +1158,19 @@ static int virtio_device_init(DeviceState *qdev) if (k->init(vdev) < 0) { return -1; } - virtio_bus_plug_device(vdev); + virtio_bus_device_plugged(vdev); return 0; } static int virtio_device_exit(DeviceState *qdev) { VirtIODevice *vdev = VIRTIO_DEVICE(qdev); + VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(qdev); + virtio_bus_device_unplugged(vdev); + if (k->exit) { + k->exit(vdev); + } if (vdev->bus_name) { g_free(vdev->bus_name); vdev->bus_name = NULL; -- cgit v1.2.1