[SCSI] qla2xxx: Add MSI support.

Supported ISP types include ISP2422 and revision-2 type
ISP2432 chips.

Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

diff --git a/drivers/scsi/qla2xxx/qla_isr.c b/drivers/scsi/qla2xxx/qla_isr.c
index d488561..ca46346 100644 (file)
--- a/drivers/scsi/qla2xxx/qla_isr.c
+++ b/drivers/scsi/qla2xxx/qla_isr.c
@@ -1726,6 +1726,17 @@ qla2x00_request_irqs(scsi_qla_host_t *ha)
        qla_printk(KERN_WARNING, ha,
            "MSI-X: Falling back-to INTa mode -- %d.\n", ret);
 skip_msix:
+
+       if (!IS_QLA24XX(ha))
+               goto skip_msi;
+
+       ret = pci_enable_msi(ha->pdev);
+       if (!ret) {
+               DEBUG2(qla_printk(KERN_INFO, ha, "MSI: Enabled.\n"));
+               ha->flags.msi_enabled = 1;
+       }
+skip_msi:
+
        ret = request_irq(ha->pdev->irq, ha->isp_ops.intr_handler,
            IRQF_DISABLED|IRQF_SHARED, QLA2XXX_DRIVER_NAME, ha);
        if (!ret) {
@@ -1746,6 +1757,8 @@ qla2x00_free_irqs(scsi_qla_host_t *ha)
 
        if (ha->flags.msix_enabled)
                qla24xx_disable_msix(ha);
-       else if (ha->flags.inta_enabled)
+       else if (ha->flags.inta_enabled) {
                free_irq(ha->host->irq, ha);
+               pci_disable_msi(ha->pdev);
+       }
 }