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@xxxxxxxxxxxxxxx>
---
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 7d73cd4..2ad7d37 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);
--
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