[PATCH] i4l: fix refcounting problem with ttyIx devices

If the same ttyIx device was opened by two processes the module was not
released and so the usage count went never to zero again.  This oneliner fixes
the issue.
Signed-off-by: NOskar Senft <o.senft@sirrix.com>
Signed-off-by: NKarsten Keil <kkeil@suse.de>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

drivers/isdn/i4l/isdn_tty.c

@@ -1682,6 +1682,7 @@ isdn_tty_close(struct tty_struct *tty, struct file *filp)
 #ifdef ISDN_DEBUG_MODEM_OPEN
 		printk(KERN_DEBUG "isdn_tty_close after info->count != 0\n");
 #endif
+		module_put(info->owner);
 		return;
 	}
 	info->flags |= ISDN_ASYNC_CLOSING;