Re: [PATCH v2 RESEND 10/23] hpsa: Use pci_enable_msix_range() instead of pci_enable_msix()

[scameron@beardog.cce.hp.com]

On Mon, Apr 14, 2014 at 10:05:34AM +0200, Alexander Gordeev wrote:
> As result of deprecation of MSI-X/MSI enablement functions
> pci_enable_msix() and pci_enable_msi_block() all drivers
> using these two interfaces need to be updated to use the
> new pci_enable_msi_range()  or pci_enable_msi_exact()
> and pci_enable_msix_range() or pci_enable_msix_exact()
> interfaces.
> 
> Signed-off-by: Alexander Gordeev <agordeev@redhat.com>
> Cc: "Stephen M. Cameron" <scameron@beardog.cce.hp.com>
> Cc: iss_storagedev@hp.com
> Cc: linux-scsi@vger.kernel.org
> Cc: linux-pci@vger.kernel.org
> ---
>  drivers/scsi/hpsa.c |   29 +++++++++++++----------------
>  1 files changed, 13 insertions(+), 16 deletions(-)
> 
> diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c
> index 3284edb..36bb1e4 100644
> --- a/drivers/scsi/hpsa.c
> +++ b/drivers/scsi/hpsa.c
> @@ -6144,26 +6144,23 @@ static void hpsa_interrupt_mode(struct ctlr_info *h)
>  		goto default_int_mode;
>  	if (pci_find_capability(h->pdev, PCI_CAP_ID_MSIX)) {
>  		dev_info(&h->pdev->dev, "MSIX\n");
> -		h->msix_vector = MAX_REPLY_QUEUES;
> -		err = pci_enable_msix(h->pdev, hpsa_msix_entries,
> -				      h->msix_vector);
> -		if (err > 0) {
> +		err = pci_enable_msix_range(h->pdev, hpsa_msix_entries,
> +					    1, MAX_REPLY_QUEUES);
> +		if (err < 0) {
> +			dev_warn(&h->pdev->dev, "MSI-X init failed %d\n", err);
> +			h->msix_vector = 0;
> +			goto single_msi_mode;
> +		} else if (err < MAX_REPLY_QUEUES) {
>  			dev_warn(&h->pdev->dev, "only %d MSI-X vectors "
>  			       "available\n", err);
> -			h->msix_vector = err;
> -			err = pci_enable_msix(h->pdev, hpsa_msix_entries,
> -					      h->msix_vector);
> -		}
> -		if (!err) {
> -			for (i = 0; i < h->msix_vector; i++)
> -				h->intr[i] = hpsa_msix_entries[i].vector;
> -			return;
> -		} else {
> -			dev_warn(&h->pdev->dev, "MSI-X init failed %d\n",
> -			       err);
> -			h->msix_vector = 0;
>  		}
> +
> +		h->msix_vector = err;
> +		for (i = 0; i < h->msix_vector; i++)
> +			h->intr[i] = hpsa_msix_entries[i].vector;
> +		return;
>  	}
> +single_msi_mode:
>  	if (pci_find_capability(h->pdev, PCI_CAP_ID_MSI)) {
>  		dev_info(&h->pdev->dev, "MSI\n");
>  		if (!pci_enable_msi(h->pdev))
> -- 
> 1.7.7.6

Ack.

-- steve