[patch 26/30] Char: isicom, fix close bug

[Chris Wright]

-stable review patch.  If anyone has any objections, please let us know.
------------------

From: Jiri Slaby <jirislaby@xxxxxxxxx>

[PATCH] Char: isicom, fix close bug

port is dereferenced even if it is NULL.  Dereference it _after_ the
check if (!port)...  Thanks Eric <ef87@xxxxxxxxx> for reporting this.

This fixes

	http://bugzilla.kernel.org/show_bug.cgi?id=7527

Signed-off-by: Jiri Slaby <jirislaby@xxxxxxxxx>
Signed-off-by: Linus Torvalds <torvalds@xxxxxxxx>
Signed-off-by: Chris Wright <chrisw@xxxxxxxxxxxx>
---

 drivers/char/isicom.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- linux-2.6.18.2.orig/drivers/char/isicom.c
+++ linux-2.6.18.2/drivers/char/isicom.c
@@ -1062,11 +1062,12 @@ static void isicom_shutdown_port(struct 
 static void isicom_close(struct tty_struct *tty, struct file *filp)
 {
 	struct isi_port *port = tty->driver_data;
-	struct isi_board *card = port->card;
+	struct isi_board *card;
 	unsigned long flags;
 
 	if (!port)
 		return;
+	card = port->card;
 	if (isicom_paranoia_check(port, tty->name, "isicom_close"))
 		return;
 

--
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