[Qemu-devel] Re: [PATCH 01/41] virtio: Teach virtio-balloon about DO_UPCAST

[Michael S. Tsirkin]

On Wed, Dec 02, 2009 at 01:03:59PM +0100, Juan Quintela wrote:
> 
> Signed-off-by: Juan Quintela <address@hidden>

container_of please

> ---
>  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 cfd3b41..2310ab0 100644
> --- a/hw/virtio-balloon.c
> +++ b/hw/virtio-balloon.c
> @@ -32,11 +32,6 @@ typedef struct VirtIOBalloon
>      uint32_t actual;
>  } VirtIOBalloon;
> 
> -static VirtIOBalloon *to_virtio_balloon(VirtIODevice *vdev)
> -{
> -    return (VirtIOBalloon *)vdev;
> -}
> -
>  static void balloon_page(void *addr, int deflate)
>  {
>  #if defined(__linux__)
> @@ -75,7 +70,7 @@ 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)) {
> @@ -106,7 +101,7 @@ static void virtio_balloon_handle_output(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);
> @@ -118,7 +113,7 @@ 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;
> -- 
> 1.6.5.2