On Wed, 22 Jul 2009 01:29:25 am Michael S. Tsirkin wrote:
> - if (info->vector != VIRTIO_MSI_NO_VECTOR)
> + if (info->vector != VIRTIO_MSI_NO_VECTOR) {
> free_irq(vp_dev->msix_entries[info->vector].vector, vq);
> + --vp_dev->msix_used_vectors;
> + }
>
This only works because the only current caller of vp_del_vq is vp_del_vqs, so
msix_used_vectors will be 0 after all the queues have been freed.
Make up your mind. Either find_vq allocates and del_vq frees, or it's find_vqs
and del_vqs. I suggest the former, and setting the value VIRTIO_MSI_NO_VECTOR
to indicate it's already freed. I think with some cleanups, that loop in
vp_free_vectors might go away, too.
Rusty.
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