vbg_hgcm_disconnect
vbg_hgcm_disconnect(gdev, VBG_KERNEL_REQUEST,
ret = vbg_hgcm_disconnect(gdev, session->requestor, client_id,
EXPORT_SYMBOL(vbg_hgcm_disconnect);
vbg_hgcm_disconnect(gdev, SHFL_REQUEST, vboxsf_client_id, &vbox_status);
int vbg_hgcm_disconnect(struct vbg_dev *gdev, u32 requestor,