203 	if (c->ctl_chan != -1) {  in mux_master_session_cleanup_cb()
204 		if ((cc = channel_by_id(c->ctl_chan)) == NULL)  in mux_master_session_cleanup_cb()
206 			    __func__, c->self, c->ctl_chan);  in mux_master_session_cleanup_cb()
207 		c->ctl_chan = -1;  in mux_master_session_cleanup_cb()
229 		sc->ctl_chan = -1;  in mux_master_control_cleanup_cb()
460 	nc->ctl_chan = c->self;		/* link session -> control channel */  in process_mux_new_session()
471 	    __func__, nc->self, nc->ctl_chan);  in process_mux_new_session()
1023 	nc->ctl_chan = c->self;		/* link session -> control channel */  in process_mux_stdio_fwd()
1027 	    __func__, nc->self, nc->ctl_chan);  in process_mux_stdio_fwd()
1052 	if ((cc = channel_by_id(c->ctl_chan)) == NULL)  in mux_stdio_confirm()
1054 		    id, c->ctl_chan);  in mux_stdio_confirm()
1220 	if ((mux_chan = channel_by_id(c->ctl_chan)) == NULL)  in mux_exit_message()
1222 		    __func__, c->self, c->ctl_chan);  in mux_exit_message()
1242 	if ((mux_chan = channel_by_id(c->ctl_chan)) == NULL)  in mux_tty_alloc_failed()
1244 		    __func__, c->self, c->ctl_chan);  in mux_tty_alloc_failed()
1353 	if ((cc = channel_by_id(c->ctl_chan)) == NULL)  in mux_session_confirm()
1355 		    id, c->ctl_chan);  in mux_session_confirm()