Differential D24459 Diff 147476 sys/dev/usb/serial/usb_serial.c

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sys/dev/usb/serial/usb_serial.c

Show First 20 Lines • Show All 520 Lines • ▼ Show 20 Lines	ucom_detach_tty(struct ucom_super_softc ssc, struct ucom_softc sc)
UCOM_MTX_UNLOCK(sc);		UCOM_MTX_UNLOCK(sc);

if (tp) {		if (tp) {
mtx_lock(&ucom_mtx);		mtx_lock(&ucom_mtx);
ucom_close_refs++;		ucom_close_refs++;
mtx_unlock(&ucom_mtx);		mtx_unlock(&ucom_mtx);

tty_lock(tp);		tty_lock(tp);
		ttydisc_lock(tp);

ucom_close(tp); /* close, if any */		ucom_close(tp); /* close, if any */

tty_rel_gone(tp);		tty_rel_gone(tp);

UCOM_MTX_LOCK(sc);		UCOM_MTX_LOCK(sc);
/*		/*
* make sure that read and write transfers are stopped		* make sure that read and write transfers are stopped
▲ Show 20 Lines • Show All 84 Lines • ▼ Show 20 Lines	ucom_queue_command(struct ucom_softc *sc,
/*		/*
* Make a copy of the termios. This field is only present if		* Make a copy of the termios. This field is only present if
* the "pt" field is not NULL.		* the "pt" field is not NULL.
*/		*/
if (pt != NULL)		if (pt != NULL)
task->termios_copy = *pt;		task->termios_copy = *pt;

/*		/*
* Closing or opening the device should be synchronous.		* The tty lock is sleepable and the ttydisc lock is shared with the USB
		* parts. We can now asychronously do the USB parts while making sure
		* that we're not violation termios guarantees about the state of the
		* hardware when we return.
*/		*/
if (fn == ucom_cfg_close \|\| fn == ucom_cfg_open)
usb_proc_mwait(&ssc->sc_tq, t0, t1);		usb_proc_mwait(&ssc->sc_tq, t0, t1);

/*		/*
* In case of multiple configure requests,		* In case of multiple configure requests,
* keep track of the last one!		* keep track of the last one!
*/		*/
if (fn == ucom_cfg_start_transfers)		if (fn == ucom_cfg_start_transfers)
sc->sc_last_start_xfer = &task->hdr;		sc->sc_last_start_xfer = &task->hdr;
}		}
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