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tty: Relocate tty_ldisc_halt() to avoid forward declaration

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tty_ldisc_halt() will use the file-scoped function, tty_ldisc_wait_idle(),
in the following patch.

Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Peter Hurley 2013-03-11 16:44:27 -04:00 committed by Greg Kroah-Hartman
parent 76bc35e78f
commit 11cf48eab2
1 changed files with 23 additions and 23 deletions
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46
drivers/tty/tty_ldisc.c
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@ -498,29 +498,6 @@ static void tty_ldisc_restore(struct tty_struct *tty, struct tty_ldisc *old)
}
}
/**
* tty_ldisc_halt - shut down the line discipline
* @tty: tty device
*
* Shut down the line discipline and work queue for this tty device.
* The TTY_LDISC flag being cleared ensures no further references can
* be obtained while the delayed work queue halt ensures that no more
* data is fed to the ldisc.
*
* You need to do a 'flush_scheduled_work()' (outside the ldisc_mutex)
* in order to make sure any currently executing ldisc work is also
* flushed.
*/
static int tty_ldisc_halt(struct tty_struct *tty)
{
int scheduled;
clear_bit(TTY_LDISC, &tty->flags);
scheduled = cancel_work_sync(&tty->port->buf.work);
set_bit(TTY_LDISC_HALTED, &tty->flags);
return scheduled;
}
/**
* tty_ldisc_flush_works - flush all works of a tty
* @tty: tty device to flush works for
@ -550,6 +527,29 @@ static int tty_ldisc_wait_idle(struct tty_struct *tty, long timeout)
return ret > 0 ? 0 : -EBUSY;
}
/**
* tty_ldisc_halt - shut down the line discipline
* @tty: tty device
*
* Shut down the line discipline and work queue for this tty device.
* The TTY_LDISC flag being cleared ensures no further references can
* be obtained while the delayed work queue halt ensures that no more
* data is fed to the ldisc.
*
* You need to do a 'flush_scheduled_work()' (outside the ldisc_mutex)
* in order to make sure any currently executing ldisc work is also
* flushed.
*/
static int tty_ldisc_halt(struct tty_struct *tty)
{
int scheduled;
clear_bit(TTY_LDISC, &tty->flags);
scheduled = cancel_work_sync(&tty->port->buf.work);
set_bit(TTY_LDISC_HALTED, &tty->flags);
return scheduled;
}
/**
* tty_ldisc_hangup_halt - halt the line discipline for hangup
* @tty: tty being hung up