Messages in this thread Patch in this message | | | From | Peter Hurley <> | Subject | [PATCH 5/6] tty: Fix hangup race with TIOCSETD ioctl | Date | Sat, 15 Jun 2013 07:04:50 -0400 |
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The hangup may already have happened; check for that state also.
Signed-off-by: Peter Hurley <peter@hurleysoftware.com> --- drivers/tty/tty_ldisc.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/drivers/tty/tty_ldisc.c b/drivers/tty/tty_ldisc.c index 6c63b73..08b8a1b 100644 --- a/drivers/tty/tty_ldisc.c +++ b/drivers/tty/tty_ldisc.c @@ -546,10 +546,8 @@ int tty_set_ldisc(struct tty_struct *tty, int ldisc) old_ldisc = tty->ldisc; tty_lock(tty); - /* FIXME: for testing only */ - WARN_ON(test_bit(TTY_HUPPED, &tty->flags)); - - if (test_bit(TTY_HUPPING, &tty->flags)) { + if (test_bit(TTY_HUPPING, &tty->flags) || + test_bit(TTY_HUPPED, &tty->flags)) { /* We were raced by the hangup method. It will have stomped the ldisc data and closed the ldisc down */ tty_ldisc_enable_pair(tty, o_tty); -- 1.8.1.2
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