static int vp_find_vqs_intx()

in virtio_pci_common.c [387:423]

• 33 lines of code
• 7 McCabe index (conditional complexity)

static int vp_find_vqs_intx(struct virtio_device *vdev, unsigned nvqs,
		struct virtqueue *vqs[], vq_callback_t *callbacks[],
		const char * const names[], const bool *ctx)
{
	struct virtio_pci_device *vp_dev = to_vp_device(vdev);
	int i, err, queue_idx = 0;

	vp_dev->vqs = kcalloc(nvqs, sizeof(*vp_dev->vqs), GFP_KERNEL);
	if (!vp_dev->vqs)
		return -ENOMEM;

	err = request_irq(vp_dev->pci_dev->irq, vp_interrupt, IRQF_SHARED,
			dev_name(&vdev->dev), vp_dev);
	if (err)
		goto out_del_vqs;

	vp_dev->intx_enabled = 1;
	vp_dev->per_vq_vectors = false;
	for (i = 0; i < nvqs; ++i) {
		if (!names[i]) {
			vqs[i] = NULL;
			continue;
		}
		vqs[i] = vp_setup_vq(vdev, queue_idx++, callbacks[i], names[i],
				     ctx ? ctx[i] : false,
				     VIRTIO_MSI_NO_VECTOR);
		if (IS_ERR(vqs[i])) {
			err = PTR_ERR(vqs[i]);
			goto out_del_vqs;
		}
	}

	return 0;
out_del_vqs:
	vp_del_vqs(vdev);
	return err;
}