[PATCH RFC 1/5] vhost-vdpa: refine ioctl pre-processing

[Jason Wang]

Switch to use 'switch' to make the codes more easier to be extended.

Signed-off-by: Jason Wang <jasow...@redhat.com>
---
 drivers/vhost/vdpa.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/drivers/vhost/vdpa.c b/drivers/vhost/vdpa.c
index 77a0c9fb6cc3..db4c9cb44c61 100644
--- a/drivers/vhost/vdpa.c
+++ b/drivers/vhost/vdpa.c
@@ -353,15 +353,16 @@ static long vhost_vdpa_vring_ioctl(struct vhost_vdpa *v, 
unsigned int cmd,
        idx = array_index_nospec(idx, v->nvqs);
        vq = &v->vqs[idx];
 
-       if (cmd == VHOST_VDPA_SET_VRING_ENABLE) {
+       switch (cmd) {
+       case VHOST_VDPA_SET_VRING_ENABLE:
                if (copy_from_user(&s, argp, sizeof(s)))
                        return -EFAULT;
                ops->set_vq_ready(vdpa, idx, s.num);
                return 0;
-       }
-
-       if (cmd == VHOST_GET_VRING_BASE)
+       case VHOST_GET_VRING_BASE:
                vq->last_avail_idx = ops->get_vq_state(v->vdpa, idx);
+               break;
+       }
 
        r = vhost_vring_ioctl(&v->vdev, cmd, argp);
        if (r)
-- 
2.20.1