diff --git a/sys/dev/cy/cy.c b/sys/dev/cy/cy.c
index 710633322de9..194b01c1620d 100644
--- a/sys/dev/cy/cy.c
+++ b/sys/dev/cy/cy.c
@@ -795,7 +795,6 @@ sioclose(dev, flag, mode, td)
 	cd_etc(com, CD1400_ETC_STOPBREAK);
 	(*linesw[tp->t_line].l_close)(tp, flag);
 	disc_optim(tp, &tp->t_termios, com);
-	comstop(tp, FREAD | FWRITE);
 	comhardclose(com);
 	ttyclose(tp);
 	siosettimeout();
diff --git a/sys/dev/digi/digi.c b/sys/dev/digi/digi.c
index 27b6268ab9f6..d5e413901dd4 100644
--- a/sys/dev/digi/digi.c
+++ b/sys/dev/digi/digi.c
@@ -902,7 +902,6 @@ digiclose(dev_t dev, int flag, int mode, struct thread *td)
 	s = spltty();
 	linesw[tp->t_line].l_close(tp, flag);
 	digi_disc_optim(tp, &tp->t_termios, port);
-	digistop(tp, FREAD | FWRITE);
 	digihardclose(port);
 	ttyclose(tp);
 	if (--sc->opencnt == 0)
diff --git a/sys/dev/nmdm/nmdm.c b/sys/dev/nmdm/nmdm.c
index 888cda419ecd..79a547687ef8 100644
--- a/sys/dev/nmdm/nmdm.c
+++ b/sys/dev/nmdm/nmdm.c
@@ -313,7 +313,6 @@ nmdmclose(dev_t dev, int flag, int mode, struct thread *td)
 	err = (*linesw[tp->t_line].l_close)(tp, flag);
 	ourpart->modemsignals &= ~TIOCM_DTR;
 	nmdm_crossover(dev->si_drv1, ourpart, otherpart);
-	nmdmstop(tp, FREAD|FWRITE);
 	(void) ttyclose(tp);
 	return (err);
 }
diff --git a/sys/dev/rc/rc.c b/sys/dev/rc/rc.c
index 96ea9face241..2a58b71e235b 100644
--- a/sys/dev/rc/rc.c
+++ b/sys/dev/rc/rc.c
@@ -962,7 +962,6 @@ rcclose(dev_t dev, int flag, int mode, d_thread_t *td)
 	s = spltty();
 	(*linesw[tp->t_line].l_close)(tp, flag);
 	disc_optim(tp, &tp->t_termios, rc);
-	rc_stop(tp, FREAD | FWRITE);
 	rc_hardclose(rc);
 	ttyclose(tp);
 	splx(s);
diff --git a/sys/dev/rp/rp.c b/sys/dev/rp/rp.c
index 3f9f49f33ac8..926c14d545fe 100644
--- a/sys/dev/rp/rp.c
+++ b/sys/dev/rp/rp.c
@@ -1132,7 +1132,6 @@ rpclose(dev, flag, mode, td)
 	oldspl = spltty();
 	(*linesw[tp->t_line].l_close)(tp, flag);
 	rp_disc_optim(tp, &tp->t_termios);
-	rpstop(tp, FREAD | FWRITE);
 	rphardclose(rp);
 
 	tp->t_state &= ~TS_BUSY;
diff --git a/sys/dev/si/si.c b/sys/dev/si/si.c
index 1b76ad07abcc..bb1c102675e6 100644
--- a/sys/dev/si/si.c
+++ b/sys/dev/si/si.c
@@ -806,8 +806,6 @@ siclose(dev_t dev, int flag, int mode, struct thread *td)
 		pp->sp_state &= ~SS_LSTART;
 	}
 
-	si_stop(tp, FREAD | FWRITE);
-
 	sihardclose(pp);
 	ttyclose(tp);
 	pp->sp_state &= ~SS_OPEN;
diff --git a/sys/dev/sio/sio.c b/sys/dev/sio/sio.c
index f4c63ef75154..7eb106eddbc6 100644
--- a/sys/dev/sio/sio.c
+++ b/sys/dev/sio/sio.c
@@ -1385,7 +1385,6 @@ sioclose(dev, flag, mode, td)
 	s = spltty();
 	(*linesw[tp->t_line].l_close)(tp, flag);
 	disc_optim(tp, &tp->t_termios, com);
-	comstop(tp, FREAD | FWRITE);
 	comhardclose(com);
 	ttyclose(tp);
 	siosettimeout();
diff --git a/sys/dev/sx/sx.c b/sys/dev/sx/sx.c
index 8cef3aed5d33..0f07f9418140 100644
--- a/sys/dev/sx/sx.c
+++ b/sys/dev/sx/sx.c
@@ -547,8 +547,6 @@ sxclose(
 	}
 	/* ok. we are now still on the right track.. nuke the hardware */
 
-	sx_stop(tp, FREAD | FWRITE);
-
 	sxhardclose(pp);
 	ttyclose(tp);
 	pp->sp_state &= ~SX_SS_OPEN;
diff --git a/sys/kern/tty_pty.c b/sys/kern/tty_pty.c
index 314bf161ea7c..2e51b3b2ca6e 100644
--- a/sys/kern/tty_pty.c
+++ b/sys/kern/tty_pty.c
@@ -208,7 +208,6 @@ ptsclose(dev, flag, mode, td)
 
 	tp = dev->si_tty;
 	err = (*linesw[tp->t_line].l_close)(tp, flag);
-	ptsstop(tp, FREAD|FWRITE);
 	(void) ttyclose(tp);
 	return (err);
 }
diff --git a/sys/pc98/cbus/sio.c b/sys/pc98/cbus/sio.c
index 51b811bfc3de..68045ab942db 100644
--- a/sys/pc98/cbus/sio.c
+++ b/sys/pc98/cbus/sio.c
@@ -2105,7 +2105,6 @@ sioclose(dev, flag, mode, td)
 	com->modem_checking = 0;
 #endif
 	disc_optim(tp, &tp->t_termios, com);
-	comstop(tp, FREAD | FWRITE);
 	comhardclose(com);
 	ttyclose(tp);
 	siosettimeout();
diff --git a/sys/pc98/pc98/sio.c b/sys/pc98/pc98/sio.c
index 51b811bfc3de..68045ab942db 100644
--- a/sys/pc98/pc98/sio.c
+++ b/sys/pc98/pc98/sio.c
@@ -2105,7 +2105,6 @@ sioclose(dev, flag, mode, td)
 	com->modem_checking = 0;
 #endif
 	disc_optim(tp, &tp->t_termios, com);
-	comstop(tp, FREAD | FWRITE);
 	comhardclose(com);
 	ttyclose(tp);
 	siosettimeout();