diff options
Diffstat (limited to 'drivers/tty/serial/8250/8250_aspeed_vuart.c')
| -rw-r--r-- | drivers/tty/serial/8250/8250_aspeed_vuart.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/tty/serial/8250/8250_aspeed_vuart.c b/drivers/tty/serial/8250/8250_aspeed_vuart.c index 9d2a7856784f..4a9e71b2dbbc 100644 --- a/drivers/tty/serial/8250/8250_aspeed_vuart.c +++ b/drivers/tty/serial/8250/8250_aspeed_vuart.c @@ -275,6 +275,9 @@ static void __aspeed_vuart_set_throttle(struct uart_8250_port *up, { unsigned char irqs = UART_IER_RLSI | UART_IER_RDI; + /* Port locked to synchronize UART_IER access against the console. */ + lockdep_assert_held_once(&up->port.lock); + up->ier &= ~irqs; if (!throttle) up->ier |= irqs; |