relay_close
relay_close(log->relay.channel);
relay_close(ar->spectral.rfs_chan_spec_scan);
relay_close(ar->cfr.rfs_cfr_capture);
relay_close(ar->spectral.rfs_scan);
relay_close(spec_priv->rfs_chan_spec_scan);
relay_close(ipc_trace->ipc_rchan);
relay_close(relaych);
extern void relay_close(struct rchan *chan);
EXPORT_SYMBOL_GPL(relay_close);
relay_close(bt->rchan);