Re: [PATCH 1/3] virtio: change to_vp_device to an inlined definition

["Michael S. Tsirkin" <mst@redhat.com>]

On Wed, Dec 05, 2012 at 03:03:27PM +0800, Wanlong Gao wrote:
> to_vp_device is worth changing to inlined definition.
> 
> Signed-off-by: Wanlong Gao <gaowanlong@cn.fujitsu.com>

I don't think it's worth it.
The oldest gcc I happened to have around is 4.3.3
which is already smart enough to generate
identical code before and after the patch.

And a function is cleaner.

> ---
>  drivers/virtio/virtio_pci.c | 6 +-----
>  1 file changed, 1 insertion(+), 5 deletions(-)
> 
> diff --git a/drivers/virtio/virtio_pci.c b/drivers/virtio/virtio_pci.c
> index e3ecc94..7681fe3 100644
> --- a/drivers/virtio/virtio_pci.c
> +++ b/drivers/virtio/virtio_pci.c
> @@ -98,11 +98,7 @@ static struct pci_device_id virtio_pci_id_table[] = {
>  
>  MODULE_DEVICE_TABLE(pci, virtio_pci_id_table);
>  
> -/* Convert a generic virtio device to our structure */
> -static struct virtio_pci_device *to_vp_device(struct virtio_device *vdev)
> -{
> -	return container_of(vdev, struct virtio_pci_device, vdev);
> -}
> +#define to_vp_device(_vdev) container_of(_vdev, struct virtio_pci_device, vdev)
>  
>  /* virtio config->get_features() implementation */
>  static u32 vp_get_features(struct virtio_device *vdev)
> -- 
> 1.8.0