+ nvec = 1;
+
+ rc = pci_enable_msi(pdev);
+ if (rc < 0)
+ return rc;
+out:
+ hpriv->irq = pdev->irq;
+
+ return nvec;
+}
+
+static int ahci_init_interrupts(struct pci_dev *pdev, unsigned int n_ports,
+ struct ahci_host_priv *hpriv)
+{
+ int nvec;
+
+ nvec = ahci_init_msi(pdev, n_ports, hpriv);
+ if (nvec >= 0)
+ return nvec;
+
+ /*
+ * Currently, MSI-X support only implements single IRQ mode and
+ * exists for controllers which can't do other types of IRQ. Only
+ * set it up if MSI fails.
+ */
+ nvec = ahci_init_msix(pdev, n_ports, hpriv);
+ if (nvec >= 0)
+ return nvec;