[PATCH 2.6.21-rc1 4/5] ehca: replace yield() by wait_for_completion()

[Christoph Hellwig]

> @@ -332,7 +333,7 @@ int ehca_destroy_cq(struct ib_cq *cq)
>         spin_lock_irqsave(&ehca_cq_idr_lock, flags);
>         while (my_cq->nr_callbacks) {
>                 spin_unlock_irqrestore(&ehca_cq_idr_lock, flags);
> -               yield();
> +               wait_for_completion(&my_cq->zero_callbacks);
>                 spin_lock_irqsave(&ehca_cq_idr_lock, flags);
>         }

A while loop around wait_for_completion doesn't make all that much sense.
I suspect a simple

	if (my_cq->nr_callbacks)
		wait_for_completion(&my_cq->zero_callbacks);

Is what you need.