Char: cyclades, fix deadlock

An omitted unlock.

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/drivers/char/cyclades.c b/drivers/char/cyclades.c
index c72ee97..ca376b9 100644 (file)
--- a/drivers/char/cyclades.c
+++ b/drivers/char/cyclades.c
@@ -1061,6 +1061,7 @@ 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)) {