static void ifcvf_vdpa_set_status()

in ifcvf/ifcvf_main.c [218:249]

• 27 lines of code
• 6 McCabe index (conditional complexity)

static void ifcvf_vdpa_set_status(struct vdpa_device *vdpa_dev, u8 status)
{
	struct ifcvf_adapter *adapter;
	struct ifcvf_hw *vf;
	u8 status_old;
	int ret;

	vf  = vdpa_to_vf(vdpa_dev);
	adapter = vdpa_to_adapter(vdpa_dev);
	status_old = ifcvf_get_status(vf);

	if (status_old == status)
		return;

	if ((status & VIRTIO_CONFIG_S_DRIVER_OK) &&
	    !(status_old & VIRTIO_CONFIG_S_DRIVER_OK)) {
		ret = ifcvf_request_irq(adapter);
		if (ret) {
			status = ifcvf_get_status(vf);
			status |= VIRTIO_CONFIG_S_FAILED;
			ifcvf_set_status(vf, status);
			return;
		}

		if (ifcvf_start_datapath(adapter) < 0)
			IFCVF_ERR(adapter->pdev,
				  "Failed to set ifcvf vdpa  status %u\n",
				  status);
	}

	ifcvf_set_status(vf, status);
}