vdpa: Add documentation for vdpa_alloc_device() macro
The return value of vdpa_alloc_device() macro is not very clear, so that most of callers did the wrong check. Let's add some comments to better document it. Signed-off-by:Xie Yongji <xieyongji@bytedance.com> Link: https://lore.kernel.org/r/20210715080026.242-4-xieyongji@bytedance.com Signed-off-by:
Michael S. Tsirkin <mst@redhat.com> Acked-by:
Jason Wang <jasowang@redhat.com> Reviewed-by:
Stefano Garzarella <sgarzare@redhat.com>
parent
1057afa0
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