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vdpa: skip suspend/resume ops if not DRIVER_OK

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If a vdpa device is not in state DRIVER_OK, then there is no driver state
to preserve, so no need to call the suspend and resume driver ops.

Suggested-by: Eugenio Perez Martin <eperezma@redhat.com>"
Signed-off-by: Steve Sistare <steven.sistare@oracle.com>
Message-Id: <1707834358-165470-1-git-send-email-steven.sistare@oracle.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Eugenio Pérez <eperezma@redhat.com>
This commit is contained in:
Steve Sistare 2024-02-13 06:25:58 -08:00 committed by Michael S. Tsirkin
parent 310227f428
commit c4e8b5aed7
1 changed files with 6 additions and 0 deletions
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6
drivers/vhost/vdpa.c
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@ -595,6 +595,9 @@ static long vhost_vdpa_suspend(struct vhost_vdpa *v)
const struct vdpa_config_ops *ops = vdpa->config;
int ret;
if (!(ops->get_status(vdpa) & VIRTIO_CONFIG_S_DRIVER_OK))
return 0;
if (!ops->suspend)
return -EOPNOTSUPP;
@ -615,6 +618,9 @@ static long vhost_vdpa_resume(struct vhost_vdpa *v)
const struct vdpa_config_ops *ops = vdpa->config;
int ret;
if (!(ops->get_status(vdpa) & VIRTIO_CONFIG_S_DRIVER_OK))
return 0;
if (!ops->resume)
return -EOPNOTSUPP;