[PATCH] Char: isicom, fix close bug

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

This fixes

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

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/char/isicom.c b/drivers/char/isicom.c
index e9e9bf31c369..58c955e390b3 100644
--- a/drivers/char/isicom.c
+++ b/drivers/char/isicom.c
@@ -1062,11 +1062,12 @@ static void isicom_shutdown_port(struct isi_port *port)
 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;