/*
* NOTE: the following function will do nothing if
* the structure pointed to by "ssc" and "sc" is zero.
*/
void
ucom_detach(struct ucom_super_softc *ssc, struct ucom_softc *sc,
uint32_t sub_units)
{
uint32_t n;
usb_proc_drain(&ssc->sc_tq);
for (n = 0; n != sub_units; n++, sc++) {
if (sc->sc_flag & UCOM_FLAG_ATTACHED) {
ucom_detach_tty(sc);
ucom_units_free(sc->sc_unit, 1);
/* avoid duplicate detach: */
sc->sc_flag &= ~UCOM_FLAG_ATTACHED;
}
}
usb_proc_free(&ssc->sc_tq);
}
/*
* The following function will do nothing if the structure pointed to
* by "ssc" and "sc" is zero or has already been detached.
*/
void
ucom_detach(struct ucom_super_softc *ssc, struct ucom_softc *sc)
{
int subunit;
if (!(ssc->sc_flag & UCOM_FLAG_ATTACHED))
return; /* not initialized */
if (ssc->sc_sysctl_ttyname != NULL) {
sysctl_remove_oid(ssc->sc_sysctl_ttyname, 1, 0);
ssc->sc_sysctl_ttyname = NULL;
}
if (ssc->sc_sysctl_ttyports != NULL) {
sysctl_remove_oid(ssc->sc_sysctl_ttyports, 1, 0);
ssc->sc_sysctl_ttyports = NULL;
}
usb_proc_drain(&ssc->sc_tq);
for (subunit = 0; subunit < ssc->sc_subunits; subunit++) {
if (sc[subunit].sc_flag & UCOM_FLAG_ATTACHED) {
ucom_detach_tty(ssc, &sc[subunit]);
/* avoid duplicate detach */
sc[subunit].sc_flag &= ~UCOM_FLAG_ATTACHED;
}
}
usb_proc_free(&ssc->sc_tq);
ucom_unref(ssc);
if (ssc->sc_flag & UCOM_FLAG_WAIT_REFS)
ucom_drain(ssc);
/* make sure we don't detach twice */
ssc->sc_flag &= ~UCOM_FLAG_ATTACHED;
}
