On 11/09/2015 04:12 AM, Johannes Stezenbach wrote:
> On Sun, Nov 08, 2015 at 05:02:52PM -0500, Peter Hurley wrote:
>> +void tty_ldisc_closing(struct tty_struct *tty)
>> +{
>> +struct tty_ldisc *ld = tty_ldisc_ref(tty);
>> +
>> +if (ld->ops->closing)
>> +ld->ops->closing(tty);
>>
On Sun, Nov 08, 2015 at 05:02:52PM -0500, Peter Hurley wrote:
> +void tty_ldisc_closing(struct tty_struct *tty)
> +{
> + struct tty_ldisc *ld = tty_ldisc_ref(tty);
> +
> + if (ld->ops->closing)
> + ld->ops->closing(tty);
> + if (ld)
> + tty_ldisc_deref(ld);
> +}
tty->closing is exclusively used to cause the N_TTY line discipline
to drop further input on final tty close (except XON/XOFF output flow
control changes). In turn, this prevents the line discipline from
generating new tty driver i/o requests (eg., when echoing) after the tty
driver has performed h
