1 files changed, 3 insertions, 1 deletions

diff --git a/drivers/tty/amiserial.c b/drivers/tty/amiserial.c
index 24145c30c9b0..6cc4358f68c1 100644
--- a/drivers/tty/amiserial.c
+++ b/drivers/tty/amiserial.c
@@ -1073,8 +1073,10 @@ static int set_serial_info(struct tty_struct *tty, struct serial_state *state,
                     (new_serial.close_delay != port->close_delay) ||
                     (new_serial.xmit_fifo_size != state->xmit_fifo_size) ||
                     ((new_serial.flags & ~ASYNC_USR_MASK) !=
-                     (port->flags & ~ASYNC_USR_MASK)))
+                     (port->flags & ~ASYNC_USR_MASK))) {
+                        tty_unlock();
                         return -EPERM;
+                }
                 port->flags = ((port->flags & ~ASYNC_USR_MASK) |
                                (new_serial.flags & ASYNC_USR_MASK));
                 state->custom_divisor = new_serial.custom_divisor;