Re: [PATCH v2 RESEND 21/23] qla2xxx: Use pci_enable_msix_range() instead of pci_enable_msix()

Alexander Gordeev
2014-07-26T08:32:40Z

On Wed, Jul 16, 2014 at 08:05:25PM +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.
>
> Log message code 0x00c6 preserved, although it is reported
> after successful call to pci_enable_msix_range(), not before
> possibly unsuccessful call to pci_enable_msix(). Consumers
> of the error code should not notice the difference.

Hello,

Could someone review this patch, please?

Thanks!

> Signed-off-by: Alexander Gordeev <agordeev@redhat.com>
> Cc: qla2xxx-upstream@qlogic.com
> Cc: linux-scsi@vger.kernel.org
> Cc: linux-pci@vger.kernel.org
> ---
> drivers/scsi/qla2xxx/qla_isr.c | 27 +++++++++++----------------
> 1 files changed, 11 insertions(+), 16 deletions(-)
>
> diff --git a/drivers/scsi/qla2xxx/qla_isr.c b/drivers/scsi/qla2xxx/qla_isr.c
> index a56825c..52d420f 100644
> --- a/drivers/scsi/qla2xxx/qla_isr.c
> +++ b/drivers/scsi/qla2xxx/qla_isr.c
> @@ -2923,27 +2923,22 @@ qla24xx_enable_msix(struct qla_hw_data *ha, struct rsp_que *rsp)
> for (i = 0; i < ha->msix_count; i++)
> entries[i].entry = i;
>
> - ret = pci_enable_msix(ha->pdev, entries, ha->msix_count);
> - if (ret) {
> - if (ret < MIN_MSIX_COUNT)
> - goto msix_failed;
> -
> + ret = pci_enable_msix_range(ha->pdev,
> + entries, MIN_MSIX_COUNT, ha->msix_count);
> + if (ret < 0) {
> + ql_log(ql_log_fatal, vha, 0x00c7,
> + "MSI-X: Failed to enable support, "
> + "giving up -- %d/%d.\n",
> + ha->msix_count, ret);
> + goto msix_out;
> + } else if (ret < ha->msix_count) {
> ql_log(ql_log_warn, vha, 0x00c6,
> "MSI-X: Failed to enable support "
> "-- %d/%d\n Retry with %d vectors.\n",
> ha->msix_count, ret, ret);
> - ha->msix_count = ret;
> - ret = pci_enable_msix(ha->pdev, entries, ha->msix_count);
> - if (ret) {
> -msix_failed:
> - ql_log(ql_log_fatal, vha, 0x00c7,
> - "MSI-X: Failed to enable support, "
> - "giving up -- %d/%d.\n",
> - ha->msix_count, ret);
> - goto msix_out;
> - }
> - ha->max_rsp_queues = ha->msix_count - 1;
> }
> + ha->msix_count = ret;
> + ha->max_rsp_queues = ha->msix_count - 1;
> ha->msix_entries = kzalloc(sizeof(struct qla_msix_entry) *
> ha->msix_count, GFP_KERNEL);
> if (!ha->msix_entries) {
> --
> 1.7.7.6
>

--
Regards,
Alexander Gordeev
agordeev@redhat.com