static int nsm_device_update()

in nsm-driver/nsm.c [363:389]

• 19 lines of code
• 5 McCabe index (conditional complexity)

static int nsm_device_update(struct virtio_device *vdev)
{
	int rc;

	/* Do nothing if the device does not change. */
	if (nsm_dev == vdev)
		return 0;

	/* Clear the old device, if any. */
	if (nsm_dev) {
		nsm_dev->config->del_vqs(vdev);
		nsm_dev = NULL;
	}

	/* Initialize the new device, if any. */
	if (vdev) {
		rc = nsm_device_init_vq(vdev);
		if (rc) {
			pr_err("NSM device queue failed to initialize: %d.\n", rc);
			return rc;
		}

		nsm_dev = vdev;
	}

	return 0;
}