On Wed, Dec 21, 2022 at 02:16:49PM +0800, Jason Wang wrote:
>This allows us to control the allocation size of the structure.
>
>Signed-off-by: Jason Wang <jasowang@redhat.com>
>---
> drivers/vdpa/vdpa_sim/vdpa_sim.c | 13 ++++++++-----
> 1 file changed, 8 insertions(+), 5 deletions(-)
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
>
>diff --git a/drivers/vdpa/vdpa_sim/vdpa_sim.c b/drivers/vdpa/vdpa_sim/vdpa_sim.c
>index b071f0d842fb..757afef86ba0 100644
>--- a/drivers/vdpa/vdpa_sim/vdpa_sim.c
>+++ b/drivers/vdpa/vdpa_sim/vdpa_sim.c
>@@ -250,6 +250,7 @@ struct vdpasim *vdpasim_create(struct vdpasim_dev_attr *dev_attr,
> const struct vdpa_dev_set_config *config)
> {
> const struct vdpa_config_ops *ops;
>+ struct vdpa_device *vdpa;
> struct vdpasim *vdpasim;
> struct device *dev;
> int i, ret = -ENOMEM;
>@@ -267,14 +268,16 @@ struct vdpasim *vdpasim_create(struct vdpasim_dev_attr *dev_attr,
> else
> ops = &vdpasim_config_ops;
>
>- vdpasim = vdpa_alloc_device(struct vdpasim, vdpa, NULL, ops,
>- dev_attr->ngroups, dev_attr->nas,
>- dev_attr->name, false);
>- if (IS_ERR(vdpasim)) {
>- ret = PTR_ERR(vdpasim);
>+ vdpa = __vdpa_alloc_device(NULL, ops,
>+ dev_attr->ngroups, dev_attr->nas,
>+ sizeof(struct vdpasim),
>+ dev_attr->name, false);
>+ if (IS_ERR(vdpa)) {
>+ ret = PTR_ERR(vdpa);
> goto err_alloc;
> }
>
>+ vdpasim = vdpa_to_sim(vdpa);
> vdpasim->dev_attr = *dev_attr;
> INIT_WORK(&vdpasim->work, dev_attr->work_fn);
> spin_lock_init(&vdpasim->lock);
>--
>2.25.1
>