diff options
| author | Alan Cox <alan@linux.intel.com> | 2010-01-04 17:26:50 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-01-21 00:03:27 +0100 |
| commit | eeec32a731631a9bad9abb21c626b9f2840bee0d (patch) | |
| tree | d78bedd82f6bf135d02c3459c443e1f4db9bb2b4 /drivers/char/nozomi.c | |
| parent | compat_ioctl: Supress "unknown cmd" message on serial /dev/console (diff) | |
| download | linux-eeec32a731631a9bad9abb21c626b9f2840bee0d.tar.xz linux-eeec32a731631a9bad9abb21c626b9f2840bee0d.zip | |
nozomi: quick fix for the close/close bug
Nozomi goes wrong if you get the sequence
open
open
close
[stuff]
close
which turns out to occur on some ppp type setups.
This is a quick patch up for the problem. It's not really fixing Nozomi
which completely fails to implement tty open/close semantics and all the
other needed stuff. Doing it right is a rather more invasive patch set and
not one that will backport.
Signed-off-by: Alan Cox <alan@linux.intel.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/char/nozomi.c')
| -rw-r--r-- | drivers/char/nozomi.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/char/nozomi.c b/drivers/char/nozomi.c index 7d73cd430340..2ad7d37afbd0 100644 --- a/drivers/char/nozomi.c +++ b/drivers/char/nozomi.c @@ -1651,10 +1651,10 @@ static void ntty_close(struct tty_struct *tty, struct file *file) dc->open_ttys--; port->count--; - tty_port_tty_set(port, NULL); if (port->count == 0) { DBG1("close: %d", nport->token_dl); + tty_port_tty_set(port, NULL); spin_lock_irqsave(&dc->spin_mutex, flags); dc->last_ier &= ~(nport->token_dl); writew(dc->last_ier, dc->reg_ier); |