1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/s390/char/fs3270.c b/drivers/s390/char/fs3270.c
index 3ef5425d0eb8..84fbc90480dc 100644
--- a/drivers/s390/char/fs3270.c
+++ b/drivers/s390/char/fs3270.c
@@ -431,6 +431,7 @@ fs3270_open(struct inode *inode, struct file *filp)
                 tty = get_current_tty();
                 if (!tty || tty->driver->major != IBM_TTY3270_MAJOR) {
                         tty_kref_put(tty);
+                        mutex_unlock(&tty_mutex);
                         rc = -ENODEV;
                         goto out;
                 }