[PATCH V2 1/4] vdpa_sim: switch to use __vdpa_alloc_device()

From: Jason Wang
Date: Thu Dec 22 2022 - 00:02:19 EST


This allows us to control the allocation size of the structure.

Signed-off-by: Jason Wang <jasowang@xxxxxxxxxx>
---
drivers/vdpa/vdpa_sim/vdpa_sim.c | 13 ++++++++-----
1 file changed, 8 insertions(+), 5 deletions(-)

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