virtio-pci: fix per-vq MSI-X request logic
[linux-2.6.git] / drivers / virtio / virtio_pci.c
index 4a1f1eb..28d9cf7 100644 (file)
@@ -530,19 +530,22 @@ static int vp_try_to_find_vqs(struct virtio_device *vdev, unsigned nvqs,
                        err = PTR_ERR(vqs[i]);
                        goto error_find;
                }
+
+               if (!vp_dev->per_vq_vectors || msix_vec == VIRTIO_MSI_NO_VECTOR)
+                       continue;
+
                /* allocate per-vq irq if available and necessary */
-               if (vp_dev->per_vq_vectors) {
-                       snprintf(vp_dev->msix_names[msix_vec],
-                                sizeof *vp_dev->msix_names,
-                                "%s-%s",
-                                dev_name(&vp_dev->vdev.dev), names[i]);
-                       err = request_irq(msix_vec, vring_interrupt, 0,
-                                         vp_dev->msix_names[msix_vec],
-                                         vqs[i]);
-                       if (err) {
-                               vp_del_vq(vqs[i]);
-                               goto error_find;
-                       }
+               snprintf(vp_dev->msix_names[msix_vec],
+                        sizeof *vp_dev->msix_names,
+                        "%s-%s",
+                        dev_name(&vp_dev->vdev.dev), names[i]);
+               err = request_irq(vp_dev->msix_entries[msix_vec].vector,
+                                 vring_interrupt, 0,
+                                 vp_dev->msix_names[msix_vec],
+                                 vqs[i]);
+               if (err) {
+                       vp_del_vq(vqs[i]);
+                       goto error_find;
                }
        }
        return 0;