[Qemu-devel] [PATCH 2/9] virtio: Teach virtio-balloon about DO_UPCAST

[Juan Quintela <quintela@redhat.com>]

Signed-off-by: Juan Quintela <quintela@redhat.com>
---
 hw/virtio-balloon.c |   11 +++--------
 1 files changed, 3 insertions(+), 8 deletions(-)

diff --git a/hw/virtio-balloon.c b/hw/virtio-balloon.c
index 086d9d1..71d009f 100644
--- a/hw/virtio-balloon.c
+++ b/hw/virtio-balloon.c
@@ -41,11 +41,6 @@ typedef struct VirtIOBalloon
     void *stats_opaque_callback_data;
 } VirtIOBalloon;

-static VirtIOBalloon *to_virtio_balloon(VirtIODevice *vdev)
-{
-    return (VirtIOBalloon *)vdev;
-}
-
 static void balloon_page(void *addr, int deflate)
 {
 #if defined(__linux__)
@@ -120,7 +115,7 @@ static size_t memcpy_from_iovector(void *data, size_t offset, size_t size,

 static void virtio_balloon_handle_output(VirtIODevice *vdev, VirtQueue *vq)
 {
-    VirtIOBalloon *s = to_virtio_balloon(vdev);
+    VirtIOBalloon *s = DO_UPCAST(VirtIOBalloon, vdev, vdev);
     VirtQueueElement elem;

     while (virtqueue_pop(vq, &elem)) {
@@ -196,7 +191,7 @@ static void virtio_balloon_receive_stats(VirtIODevice *vdev, VirtQueue *vq)

 static void virtio_balloon_get_config(VirtIODevice *vdev, uint8_t *config_data)
 {
-    VirtIOBalloon *dev = to_virtio_balloon(vdev);
+    VirtIOBalloon *dev = DO_UPCAST(VirtIOBalloon, vdev, vdev);
     struct virtio_balloon_config config;

     config.num_pages = cpu_to_le32(dev->num_pages);
@@ -208,7 +203,7 @@ static void virtio_balloon_get_config(VirtIODevice *vdev, uint8_t *config_data)
 static void virtio_balloon_set_config(VirtIODevice *vdev,
                                       const uint8_t *config_data)
 {
-    VirtIOBalloon *dev = to_virtio_balloon(vdev);
+    VirtIOBalloon *dev = DO_UPCAST(VirtIOBalloon, vdev, vdev);
     struct virtio_balloon_config config;
     memcpy(&config, config_data, 8);
     dev->actual = config.actual;
-- 
1.6.6.1