Aren
/
NetBSD
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Fiddle enough with the tty so that it wakes up on detach and drops 

the reference count on the ucom.
This commit is contained in:
augustss 2001-01-23 22:06:25 +00:00
parent 4b0119383e
commit 840a1d7e2b
1 changed files with 11 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
sys/dev/usb/ucom.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: ucom.c,v 1.35 2001/01/23 21:56:17 augustss Exp $ */
/* $NetBSD: ucom.c,v 1.36 2001/01/23 22:06:25 augustss Exp $ */
/*
* Copyright (c) 1998, 2000 The NetBSD Foundation, Inc.
@ -198,11 +198,12 @@ USB_ATTACH(ucom)
USB_DETACH(ucom)
{
struct ucom_softc *sc = (struct ucom_softc *)self;
struct tty *tp = sc->sc_tty;
int maj, mn;
int s;
DPRINTF(("ucom_detach: sc=%p flags=%d tp=%p, pipe=%d,%d\n",
sc, flags, sc->sc_tty, sc->sc_bulkin_no, sc->sc_bulkout_no));
sc, flags, tp, sc->sc_bulkin_no, sc->sc_bulkout_no));
sc->sc_dying = 1;
@ -214,8 +215,11 @@ USB_DETACH(ucom)
s = splusb();
if (--sc->sc_refcnt >= 0) {
/* Wake up anyone waiting */
if (sc->sc_tty != NULL)
ttyflush(sc->sc_tty, FREAD|FWRITE);
if (tp != NULL) {
CLR(tp->t_state, TS_CARR_ON);
CLR(tp->t_cflag, CLOCAL | MDMBUF);
ttyflush(tp, FREAD|FWRITE);
}
/* Wait for processes to go away. */
usb_detach_wait(USBDEV(sc->sc_dev));
}
@ -234,9 +238,9 @@ USB_DETACH(ucom)
vdevgone(maj, mn | UCOMCALLUNIT_MASK, mn | UCOMCALLUNIT_MASK, VCHR);
/* Detach and free the tty. */
if (sc->sc_tty != NULL) {
tty_detach(sc->sc_tty);
ttyfree(sc->sc_tty);
if (tp != NULL) {
tty_detach(tp);
ttyfree(tp);
sc->sc_tty = NULL;
}