[Qemu-devel] [PATCH v6 6/8] virtio-blk: cleanup: init and exit functions.

[fred.konrad@greensocs.com]

From: KONRAD Frederic <fred.konrad@greensocs.com>

As all virtio-blk-* are switched to the new API, we can remove the separate
init/exit for the old API.

Signed-off-by: KONRAD Frederic <fred.konrad@greensocs.com>
---
 hw/virtio-blk.c | 85 ++++++++++++++-------------------------------------------
 hw/virtio.h     |  2 --
 2 files changed, 21 insertions(+), 66 deletions(-)

diff --git a/hw/virtio-blk.c b/hw/virtio-blk.c
index a0d0679..935aad4 100644
--- a/hw/virtio-blk.c
+++ b/hw/virtio-blk.c
@@ -630,102 +630,59 @@ void virtio_blk_set_conf(DeviceState *dev, VirtIOBlkConf *blk)
     memcpy(&(s->blk), blk, sizeof(struct VirtIOBlkConf));
 }
 
-static VirtIODevice *virtio_blk_common_init(DeviceState *dev,
-                                          VirtIOBlkConf *blk, VirtIOBlock **ps)
+static int virtio_blk_device_init(VirtIODevice *vdev)
 {
-    VirtIOBlock *s = *ps;
+    DeviceState *qdev = DEVICE(vdev);
+    VirtIOBlock *s = VIRTIO_BLK(vdev);
+    VirtIOBlkConf *blk = &(s->blk);
     static int virtio_blk_id;
 
     if (!blk->conf.bs) {
         error_report("drive property not set");
-        return NULL;
+        return -1;
     }
     if (!bdrv_is_inserted(blk->conf.bs)) {
         error_report("Device needs media, but drive is empty");
-        return NULL;
+        return -1;
     }
 
     blkconf_serial(&blk->conf, &blk->serial);
     if (blkconf_geometry(&blk->conf, NULL, 65535, 255, 255) < 0) {
-        return NULL;
+        return -1;
     }
 
-    /*
-     * We have two cases here: the old virtio-blk-pci device, and the
-     * refactored virtio-blk.
-     */
-    if (s == NULL) {
-        /* virtio-blk-pci */
-        s = (VirtIOBlock *)virtio_common_init("virtio-blk", VIRTIO_ID_BLOCK,
-                                              sizeof(struct virtio_blk_config),
-                                              sizeof(VirtIOBlock));
-    } else {
-        /* virtio-blk */
-        virtio_init(VIRTIO_DEVICE(s), "virtio-blk", VIRTIO_ID_BLOCK,
-                    sizeof(struct virtio_blk_config));
-    }
+    virtio_init(vdev, "virtio-blk", VIRTIO_ID_BLOCK,
+                sizeof(struct virtio_blk_config));
 
-    s->vdev.get_config = virtio_blk_update_config;
-    s->vdev.set_config = virtio_blk_set_config;
-    s->vdev.get_features = virtio_blk_get_features;
-    s->vdev.set_status = virtio_blk_set_status;
-    s->vdev.reset = virtio_blk_reset;
+    vdev->get_config = virtio_blk_update_config;
+    vdev->set_config = virtio_blk_set_config;
+    vdev->get_features = virtio_blk_get_features;
+    vdev->set_status = virtio_blk_set_status;
+    vdev->reset = virtio_blk_reset;
     s->bs = blk->conf.bs;
     s->conf = &blk->conf;
     memcpy(&(s->blk), blk, sizeof(struct VirtIOBlkConf));
     s->rq = NULL;
     s->sector_mask = (s->conf->logical_block_size / BDRV_SECTOR_SIZE) - 1;
 
-    s->vq = virtio_add_queue(&s->vdev, 128, virtio_blk_handle_output);
+    s->vq = virtio_add_queue(vdev, 128, virtio_blk_handle_output);
 #ifdef CONFIG_VIRTIO_BLK_DATA_PLANE
-    if (!virtio_blk_data_plane_create(&s->vdev, blk, &s->dataplane)) {
-        virtio_cleanup(&s->vdev);
-        return NULL;
+    if (!virtio_blk_data_plane_create(vdev, blk, &s->dataplane)) {
+        virtio_cleanup(vdev);
+        return -1;
     }
 #endif
 
     s->change = qemu_add_vm_change_state_handler(virtio_blk_dma_restart_cb, s);
-    s->qdev = dev;
-    register_savevm(dev, "virtio-blk", virtio_blk_id++, 2,
+    s->qdev = qdev;
+    register_savevm(qdev, "virtio-blk", virtio_blk_id++, 2,
                     virtio_blk_save, virtio_blk_load, s);
     bdrv_set_dev_ops(s->bs, &virtio_block_ops, s);
     bdrv_set_buffer_alignment(s->bs, s->conf->logical_block_size);
 
     bdrv_iostatus_enable(s->bs);
-    add_boot_device_path(s->conf->bootindex, dev, "/disk@0,0");
 
-    return &s->vdev;
-}
-
-VirtIODevice *virtio_blk_init(DeviceState *dev, VirtIOBlkConf *blk)
-{
-    VirtIOBlock *s = NULL;
-    return virtio_blk_common_init(dev, blk, &s);
-}
-
-void virtio_blk_exit(VirtIODevice *vdev)
-{
-    VirtIOBlock *s = to_virtio_blk(vdev);
-
-#ifdef CONFIG_VIRTIO_BLK_DATA_PLANE
-    virtio_blk_data_plane_destroy(s->dataplane);
-    s->dataplane = NULL;
-#endif
-    qemu_del_vm_change_state_handler(s->change);
-    unregister_savevm(s->qdev, "virtio-blk", s);
-    blockdev_mark_auto_del(s->bs);
-    virtio_cleanup(vdev);
-}
-
-
-static int virtio_blk_device_init(VirtIODevice *vdev)
-{
-    DeviceState *qdev = DEVICE(vdev);
-    VirtIOBlock *s = VIRTIO_BLK(vdev);
-    VirtIOBlkConf *blk = &(s->blk);
-    if (virtio_blk_common_init(qdev, blk, &s) == NULL) {
-        return -1;
-    }
+    add_boot_device_path(s->conf->bootindex, qdev, "/disk@0,0");
     return 0;
 }
 
diff --git a/hw/virtio.h b/hw/virtio.h
index ca43fd7..fdbe931 100644
--- a/hw/virtio.h
+++ b/hw/virtio.h
@@ -240,7 +240,6 @@ void virtio_bind_device(VirtIODevice *vdev, const VirtIOBindings *binding,
 
 /* Base devices.  */
 typedef struct VirtIOBlkConf VirtIOBlkConf;
-VirtIODevice *virtio_blk_init(DeviceState *dev, VirtIOBlkConf *blk);
 struct virtio_net_conf;
 VirtIODevice *virtio_net_init(DeviceState *dev, NICConf *conf,
                               struct virtio_net_conf *net,
@@ -258,7 +257,6 @@ VirtIODevice *virtio_9p_init(DeviceState *dev, V9fsConf *conf);
 
 
 void virtio_net_exit(VirtIODevice *vdev);
-void virtio_blk_exit(VirtIODevice *vdev);
 void virtio_serial_exit(VirtIODevice *vdev);
 void virtio_balloon_exit(VirtIODevice *vdev);
 void virtio_scsi_exit(VirtIODevice *vdev);
-- 
1.7.11.7