On 02/05/2013 09:20 PM, Peter Hurley wrote:
> @@ -688,9 +702,9 @@ int tty_set_ldisc(struct tty_struct *tty, int ldisc)
>        *      parallel to the change and re-referencing the tty.
>        */
>  
> -     work = tty_ldisc_halt(tty);
> +     retval = tty_ldisc_halt(tty, &work, 5 * HZ);
>       if (o_tty)
> -             o_work = tty_ldisc_halt(o_tty);
> +             tty_ldisc_halt(o_tty, &o_work, 0);

Zero in there will cause the other end's work not to be cancelled and
TTY_LDISC_HALTED unset if there are two or more readers on the slave,
right? So there should be something like:
if (timeout)
  retval = tty_ldisc_wait_idle(tty, timeout);
  ...

in tty_ldisc_halt.

-- 
js
suse labs
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