[PATCH] Char: cyclades, fix deadlock

An omitted unlock.
Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/char/cyclades.c

@@ -1103,6 +1103,7 @@ static void cyy_intr_chip(struct cyclades_card *cinfo, int chip,
 
 				if (data & info->ignore_status_mask) {
 					info->icount.rx++;
+					spin_unlock(&cinfo->card_lock);
 					return;
 				}
 				if (tty_buffer_request_room(tty, 1)) {