Re: [PATCH] PCI/MSI: Only disable affinity settings if pre and post vector count is equal to max_vecs and not min_vecs

[Christoph Hellwig <hch@xxxxxx>]

> @@ -1206,16 +1228,6 @@ int pci_alloc_irq_vectors_affinity(struct pci_dev *dev, unsigned int min_vecs,
>  	if (flags & PCI_IRQ_AFFINITY) {
>  		if (!affd)
>  			affd = &msi_default_affd;
> -
> -		if (affd->pre_vectors + affd->post_vectors > min_vecs)
> -			return -EINVAL;

Actually I think we can leave this check here.

> -
> -		/*
> -		 * If there aren't any vectors left after applying the pre/post
> -		 * vectors don't bother with assigning affinity.
> -		 */
> -		if (affd->pre_vectors + affd->post_vectors == min_vecs)
> -			affd = NULL;

And only move this one down into the allocator helpers.