diff options
Diffstat (limited to 'drivers/tty')
| -rw-r--r-- | drivers/tty/serial/serial_core.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c index 6b7f857fc3b0..6e4f63627479 100644 --- a/drivers/tty/serial/serial_core.c +++ b/drivers/tty/serial/serial_core.c @@ -1484,15 +1484,15 @@ static void uart_tty_port_shutdown(struct tty_port *port) struct uart_state *state = container_of(port, struct uart_state, port); struct uart_port *uport = uart_port_check(state); - spin_lock_irq(&uport->lock); /* * At this point, we stop accepting input. To do this, we * disable the receive line status interrupts. */ - WARN(!uport, "detached port still initialized!\n"); + if (WARN(!uport, "detached port still initialized!\n")) + return; + spin_lock_irq(&uport->lock); uport->ops->stop_rx(uport); - spin_unlock_irq(&uport->lock); uart_port_shutdown(port); |