From 716da631ae91fc5e9f8d5815f8ef5fbfed862b80 Mon Sep 17 00:00:00 2001
From: Alan Cox <alan@redhat.com>
Date: Mon, 13 Oct 2008 10:35:33 +0100
Subject: [PATCH] nozomi: Fix close on error

Nozomi assumes the close method isn't called if open errors. The tty layer
is different to other drives in this respect however. Pointed out by Denis J
Barrow.

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
 drivers/char/nozomi.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/char/nozomi.c b/drivers/char/nozomi.c
index 66a0f931c66c..9a34a1935283 100644
--- a/drivers/char/nozomi.c
+++ b/drivers/char/nozomi.c
@@ -1599,7 +1599,10 @@ static int ntty_open(struct tty_struct *tty, struct file *file)
 	return 0;
 }
 
-/* Called when the userspace process close the tty, /dev/noz*. */
+/* Called when the userspace process close the tty, /dev/noz*. Also
+   called immediately if ntty_open fails in which case tty->driver_data
+   will be NULL an we exit by the first return */
+
 static void ntty_close(struct tty_struct *tty, struct file *file)
 {
 	struct nozomi *dc = get_dc_by_tty(tty);
-- 
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